Path guidance system for small-spacing tunnel-interchange sections based on self-explanation

Abstract

The present invention relates to a small-spacing tunnel-overpass section path guidance system based on self-explanation, including a sign and marking guidance system and a sight guidance system, wherein the sign and marking guidance system and the sight guidance system are set according to spacing conditions, and the spacing conditions are divided into three situations: the spacing between the tunnel exit and the overpass exit is less than 6s travel, the spacing between the tunnel exit and the overpass exit is greater than 6s travel and less than 15s travel, and the spacing between the tunnel exit and the overpass exit is greater than 15s travel; the sign and marking guidance system includes a warning point guidance sign, a warning point guidance sign, an action point guidance sign, a notification point guidance sign and a road surface text mark, and the sight guidance system includes an oblique arched reflective strip, a belt line, a fishbone arrow-shaped facade mark and a directional guidance column. The present invention makes the small-spacing tunnel-overpass section area self-explanatory, can convey guidance information with continuity and progressiveness of the previous and next meanings to the driver, and decomposes the driving task vertically.

Description

Technical Field

[0001] The present invention relates to the technical field of road traffic safety, and more specifically to a small-spacing tunnel-interchange section path guidance system based on self-explanation. Background Art

[0002] Due to limitations in terrain, design conditions, and planned space, many sections with small spacing between tunnel exits and interchange main line exits have gradually appeared on highways. According to existing research and operational experience, the accident rate in small-spacing tunnel-interchange sections is much higher than that in other main line sections. In recent years, this has become a safety pain point in highway operation and management.

[0003] When driving in a tunnel-overpass section with small spacing, drivers are affected by the oppressive environment of the tunnel and the "white hole effect" for a long time. They need to make judgments on a large amount of road information in a short period of time before leaving the tunnel and the overpass. This may easily lead to missing the overpass exit or hesitating, suddenly changing lanes, or braking at the overpass exit, posing a huge traffic safety hazard. In addition, there is also the problem of difficulty in setting up road signs in the tunnel-overpass section with small spacing. The exit road sign information is insufficient, and it is difficult for drivers to obtain sufficient exit information in advance. It is difficult to judge the exit ramp, which may easily lead to missing the exit.

[0004] The areas reserved for entering and exiting tunnel entrances and interchange exits are both dangerous sections with frequent accidents. The small-spacing tunnel-interchange sections are essentially the superposition of these two dangerous areas, posing a huge traffic safety hazard and has become a problem that needs to be urgently addressed in terms of road traffic safety. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a self-explanatory small-spacing tunnel-interchange section path guidance system, which can provide the driver with guidance information with continuity and progressiveness of context, ensuring that the driver can easily identify the interchange exit ramp, meet the driver's driving expectations and enable him to take matching driving behaviors, thereby achieving easy and safe driving.

[0006] The technical solution adopted by the present invention to solve its technical problems is: construct a small-spacing tunnel-interchange section path guidance system based on self-explanation, including a sign and marking guidance system and a sight guidance system, the sign and marking guidance system and the sight guidance system are set according to the spacing conditions, and the spacing conditions are divided into three situations: the spacing between the tunnel exit and the interchange exit is less than 6s travel, the spacing between the tunnel exit and the interchange exit is greater than 6s travel and less than 15s travel, and the spacing between the tunnel exit and the interchange exit is greater than 15s travel; the sign and marking guidance system includes a warning point guidance sign, a warning point guidance sign, an action point guidance sign, a notification point guidance sign and a road surface text mark, and the sight guidance system includes an oblique arched reflective strip, a belt line, a fishbone arrow-shaped vertical surface mark and a directional guidance column; the oblique arched reflective strip is set on the tunnel side wall, the belt line is continuously set on the tunnel side wall, the fishbone arrow-shaped vertical surface mark is set on the belt line, and the directional guidance column is set at the edge of the tunnel exit maintenance road;

[0007] When the distance between the tunnel exit and the interchange exit is less than 6s travel, the starting point of the gradual change section of the exit deceleration lane of the tunnel-interchange is the reference point, and the reference point is set in the tunnel; warning point signposts are set at 3km, 2km and 1km away from the reference point, and there are no less than two warning point signposts in the tunnel; warning point signposts are set at 500m, 300m and 100m away from the reference point; action point signposts are set at the reference point; the area separating the main line side and the exit side of the tunnel-interchange is the diversion triangle, and a notification point signpost is set at the nose of the diversion triangle; the lane dividing lines on the main line side and the exit side of the tunnel-interchange are both set as dotted lines;

[0008] When the distance between the tunnel exit and the interchange exit is greater than 6s travel and less than 15s travel, the reference point is set outside the tunnel; warning point signposts are set at 3km, 2km and 1km away from the reference point, and there is no less than one warning point signpost outside the tunnel; warning point signposts are set at 500m, 300m and 100m away from the reference point; an action point signpost is set at the reference point; a notification point signpost is set at the nose of the diversion triangle; the lane dividing lines on the main line side and the exit side of the tunnel-interchange are set as solid lines before the 1km warning point signpost and as dotted lines after the 1km warning point signpost;

[0009] When the distance between the tunnel exit and the interchange exit is greater than 15s travel, the reference point is set outside the tunnel, and warning point signs are set at 3km, 2km and 1km away from the reference point respectively, and the warning point signs are set in the tunnel; warning point signs are set at 500m, 300m and 100m away from the reference point respectively; an action point sign is set at the reference point; a notification point sign is set at the nose of the diversion triangle; the lane dividing lines on the main line side and the exit side of the tunnel-interchange are set as solid lines in the tunnel and as dotted lines 120~150m after the tunnel exit.

[0010] According to the above scheme, the warning point sign, action point sign and notification point sign set in the tunnel are all LED self-luminous and hung on the top of the tunnel; the warning point sign, action point sign and notification point sign set outside the tunnel are all provided with retro-reflective film on their surfaces, the warning point sign and action point sign adopt a gantry support structure, and the notification point sign and action point sign adopt a single cantilever support structure.

[0011] According to the above scheme, the warning point sign includes a main line information warning sign, an exit information warning sign and an exit number sign; the main line information warning sign arranged in the tunnel has a signboard shape of an upper arch + a lower rectangle, and the main line information warning sign arranged outside the tunnel has a signboard shape of a square and a sign layout is provided with an upper arch + a lower rectangular road name information outer frame; the exit information warning sign arranged in the tunnel has a signboard shape of a left rectangle + a right arch, and the exit information warning sign arranged outside the tunnel has a signboard shape of a square and a sign layout is a left rectangle + a right arch road name information outer frame, and an exit number sign is arranged on the top of the exit information warning sign arranged outside the tunnel;

[0012] The warning point signpost includes a main line information warning sign, an exit information warning sign and an exit number sign. The main line information warning sign set in the tunnel has a signboard shape of an upper arch + a lower rectangle, and the main line information warning sign set outside the tunnel has a square shape and the sign layout is provided with an upper arch + a lower rectangular road name information outer frame; the exit information warning sign set in the tunnel has a signboard shape of an upper sharp corner + a lower left rectangle + a lower right arch; the exit information warning sign set outside the tunnel has a square shape and the sign layout is The road name information outer frame is composed of an upper sharp corner + a lower left rectangle + a lower right arch, and an exit number mark is set on the top of the exit information warning sign outside the tunnel; when the exit information warning sign outside the tunnel is 500m away from the reference point, the upper sharp corner occupies 1 / 3 of the total shape height and the lower part occupies 2 / 3; when the exit information warning sign outside the tunnel is 300m away from the reference point, the upper sharp corner occupies 1 / 2 and the lower part occupies 1 / 2; when the exit information warning sign outside the tunnel is 100m away from the reference point, the upper sharp corner occupies 2 / 3 and the lower part occupies 1 / 3;

[0013] The action point signpost is provided with exit information, and the signboard of the action point signpost set in the tunnel is triangular in shape; the signboard of the action point signpost set outside the tunnel is square in shape, and the layout of the action point signpost set outside the tunnel is provided with a triangular outer frame of the road name information, and the top of the action point signpost set outside the tunnel is provided with an exit number mark;

[0014] The notification point sign is square in shape, and a triangular outer frame of road name information is arranged on the layout of the notification point sign. A large-sized exit number sign is arranged on the top of the notification point sign, and the large-sized exit number sign is the same width as the notification point sign.

[0015] According to the above scheme, the layout information of the main line information advance sign and the main line information warning sign includes arrows and road name information indicating the lane downwards, the arrows and road name information of the main line information advance sign and the main line information warning sign arranged in the tunnel are white characters on a red background, the arrows and road name information of the main line information advance sign and the main line information warning sign arranged outside the tunnel are white characters on a green background, and the outer frame of the road name information is red; the layout information of the exit information advance sign and the exit information warning sign includes an arrow indicating the driving direction obliquely to the upper right, the exit road name information and the exit distance, the exit information advance sign and the exit information warning sign arranged in the tunnel are white characters on a blue background, the exit information advance sign and the exit information warning sign arranged outside the tunnel are white characters on a green background, the outer frame of the exit road name information is blue, and the upper sharp corner of the exit information warning sign is provided with a fluorescent yellow-green inner frame; the layout information of the exit number sign includes a diversion direction pattern and an exit number;

[0016] The layout information of the action point sign includes an arrow pointing diagonally to the upper right to indicate the driving direction and the exit road name information. The action point sign set in the tunnel is fluorescent yellow-green with white characters, and the action point sign set outside the tunnel is green with white characters, and the outer frame of the exit road name information is fluorescent yellow-green;

[0017] The notification point sign includes an arrow indicating the ramp line of a large curve, exit road name information and a large-sized exit sign. The layout of the notification point sign is white text on a green background, and the outer frame of the exit road name information is fluorescent yellow-green; the large-sized exit number sign includes a diversion direction pattern, a yellow flashing light and an exit number arranged side by side.

[0018] According to the above scheme, road surface text signs are set 40 to 60 meters before the warning point sign, warning point sign, action point sign and notification point sign, and the road surface text signs include a large color outer frame, a small white text outer frame, a white directional arrow and white road name information text; the large color outer frame set in the main line side lane is red and the front is arched, and the large color outer frame set in the exit side lane is blue and the front is a right arrow shape; the line width of the small white text outer frame is 8 to 12 cm, the small white text outer frame set in the main line side lane is oval, and the small white text outer frame set in the exit side lane is right arrow shape.

[0019] According to the above scheme, the oblique arched reflective strips are set at the warning point sign in the tunnel, five oblique arched reflective strips are set at the 500m warning point sign, three oblique arched reflective strips are set at the 300m warning point sign, and one oblique arched reflective strip is set at the 100m warning point sign. The oblique arched reflective strips are inclined in the driving direction, the oblique arched reflective strips set on the main line side are red, and the oblique arched reflective strips set on the exit side are blue.

[0020] According to the above scheme, the belt line is continuously set along the entire tunnel. The belt line set on the side wall of the tunnel on the main line side is red, and the belt line set on the side wall of the tunnel on the exit side is blue. Starting from 500m from the warning point, a fishbone arrow-shaped vertical mark is set every 30 to 50m on the belt line on the side wall of the tunnel near the exit side.

[0021] According to the above scheme, the setting range of the directional induction column is 20~40m before the tunnel exit to 200~250m outside the tunnel exit. The directional induction column is set close to the edge of the maintenance road, and the distance between adjacent directional induction columns is 2~3m; the directional induction column includes a self-luminous stroboscopic fluorescent yellow-green ball lamp, an induction column body and a large-size combined linear induction sign. The induction column body is provided with a reflective film. The induction column body set on the main line side is red and white, and the induction column body set on the exit side is blue and white. The top of the induction column body is provided with a self-luminous stroboscopic fluorescent yellow-green ball lamp; the height of the induction column body gradually decreases from the tunnel portal to the outside of the tunnel; a large-size combined linear induction sign is set between adjacent induction column bodies.

[0022] The self-explanatory small-spacing tunnel-interchange section path guidance system of the present invention has the following beneficial effects:

[0023] 1. The present invention sets a four-level warning system of warning points, warning points, action points, and notification points according to the actual situation for tunnel-interchange sections under different small spacing conditions, so as to provide drivers with continuous and progressive guidance information. Among them, the main purpose of the warning point is to remind the driver that the main line exit is ahead and prompt him to concentrate on completing the driving task; the main purpose of the warning point is to remind the driver again that the main line exit is ahead and he needs to change to the corresponding lane and prepare to leave the main line; the main purpose of the action point is to guide the driver to change his driving behavior according to the content of the sign and drive into the deceleration lane; the main purpose of the notification point is to clearly show the driver the exit direction, position, road name information, etc., to help the driver check the driving path;

[0024] 2. The present invention provides asymmetric guidance information for drivers by differentiating the colors of the guide signs and guidance facilities on the main line side and the exit side, so that drivers can better identify the main line and the exit, and select the corresponding lane in advance according to the expected path, which plays the role of early lane division guidance; in addition, by incorporating fluorescent yellow-green into the guide signs on the exit side and adding vertical markings on the side walls of the tunnel, the warning of the exit is enhanced, so that drivers can discover and make decisions early;

[0025] 3. The present invention reflects the change of driving tasks through the change of the shape of the outer frame of the road sign and the road name information in the sign, so that the small-spacing tunnel-interchange section has a high degree of self-explanation. The driver can clarify the driving tasks at different points through the change of the induced information, which reduces the difficulty of driving operation. For example, the arc shape at the top of the main line sign in the warning point sign and the arc shape on the right side of the exit sign indicate the diversion direction; the sharp corner at the top of the exit sign in the warning point sign indicates the driving task to be performed immediately. The closer the distance to the exit, the more prominent the sharp corner, indicating that the driving task is more urgent. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0027] Figure 1 It is a perspective view of the path guidance system of the small-spacing tunnel-interchange section based on self-explanation of the present invention;

[0028] Figure 2 It is a schematic diagram of the layout of the signs in the tunnel-interchange section area with a spacing of less than 6s travel according to the present invention;

[0029] Figure 3 It is a schematic diagram of the layout of the tunnel-interchange section area signs with a spacing greater than 6s travel but less than 15s travel of the present invention;

[0030] Figure 4 It is a schematic diagram of the layout of the signs in the tunnel-interchange section area with a spacing greater than 15s travel according to the present invention;

[0031] Figure 5 It is a schematic diagram of a warning point guide sign arranged in a tunnel according to the present invention;

[0032] Figure 6 It is a schematic diagram of a warning point sign outside a tunnel provided by the present invention;

[0033] Figure 7 It is a schematic diagram of a warning point guide sign arranged in a tunnel according to the present invention;

[0034] Figure 8 It is a schematic diagram of a warning point sign outside a tunnel provided by the present invention;

[0035] Fig. 9It is a schematic diagram of the action point guide sign set in the tunnel of the present invention;

[0036] Fig.10 It is a schematic diagram of the action point guide sign arranged outside the tunnel of the present invention;

[0037] Fig.11 This is a schematic diagram of a road sign indicating a notification point of the present invention;

[0038] Fig.12 is a top view of the road surface text marking of the present invention;

[0039] Fig.13 is a side view of the oblique arched reflective strip of the present invention;

[0040] Fig.14 is a side view of the belt line and the fishbone arrow-shaped elevation mark of the present invention;

[0041] Fig.15 is a perspective view of a directional induction column of the present invention;

[0042] Fig.16 It is a side view of the directional induction column of the present invention.

[0043] In the figure: 1. Advance notice sign; 11. Main line information advance sign; 12. Exit information advance sign; 2. Warning point sign; 21. Main line information warning sign; 22. Exit information warning sign; 3. Action point sign; 4. Notification point sign; 5. Pavement text marking; 6. Oblique arch reflective strip; 7. Belt line; 8. Fishbone arrow-shaped facade mark; 9. Directional induction column; 91. Self-luminous stroboscopic fluorescent yellow-green ball lamp; 92. Induction column; 93; Large-sized combined linear induction sign. DETAILED DESCRIPTION

[0044] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0045] like Figure 1-16As shown, the self-explanatory small-spacing tunnel-interchange section path guidance system of the present invention includes a sign and marking guidance system and a sight line guidance system, which are set according to the spacing conditions, and the spacing conditions are divided into three situations: the spacing between the tunnel exit and the interchange exit is less than 6s travel, the spacing between the tunnel exit and the interchange exit is greater than 6s travel and less than 15s travel, and the spacing between the tunnel exit and the interchange exit is greater than 15s travel. The sign and marking guidance system includes a warning point guide sign 1, a warning point guide sign 2, an action point guide sign 3, a notification point guide sign 4 and a road surface text mark 5, and the sight line guidance system includes an oblique arched reflective strip 6, a belt line 7, a fishbone arrow-shaped vertical surface mark 8 and a directional guidance column 9; the oblique arched reflective strip 6 is set on the side wall of the tunnel, the belt line 7 is continuously set on the side wall of the tunnel, the fishbone arrow-shaped vertical surface mark 8 is set on the belt line, and the directional guidance column 9 is set at the edge of the tunnel exit maintenance road.

[0046] The spacing s=vt, where v is the design speed. The design speed of a road is the safe driving speed of vehicles designed under the most unfavorable conditions for traffic safety based on some geographical geometric features of the entire road, such as the minimum horizontal curve and the minimum longitudinal curve. That is, at this design speed, the lowest value of the safe driving speed that a vehicle can reach and ensure on the entire road. The design speed of a road is determined based on the specific geographical geometric features of the road section. The geographical geometric features of the road are determined by the following factors: (1) the plane alignment and minimum curvature of the road, (2) the minimum longitudinal curvature and maximum slope of the road, (3) the cross-section of the roadbed, the flatness and friction of the road, (4) the minimum width and number of lanes of the road, and (5) the form of road plane intersections and flyovers.

[0047] When the distance between the tunnel exit and the interchange exit is less than 6 seconds, the driver's adaptive distance is not met and the driver is still affected by the "white hole effect", making it difficult for the driver to obtain road information. Therefore, the reference point (the starting point of the gradual change section of the exit deceleration lane, the same below) is set in the tunnel, and warning point sign 1 is set at 3km, 2km and 1km away from the reference point, and at least two warning point sign 1 should be set before the tunnel entrance. If the conditions are not met, additional warning point sign 1 can be set; warning point sign 2 is set at 500m, 300m and 100m away from the reference point; action point sign 3 is set at the reference point; the area separating the main line side and the exit side is the diversion triangle, and a notification point sign 4 is set at the nose of the diversion triangle; the lane dividing lines on the main road and the branch road are set as dotted lines; this setting method can induce drivers to change lanes before or in the tunnel, make psychological preparations in advance and make decisions early.

[0048] When the distance between the tunnel exit and the interchange exit is greater than 6s travel but less than 15s travel, although the driver's visible adaptation distance is met, it does not meet the distance for exit sign recognition and lane change; therefore, the reference point can be set outside the tunnel, and warning point sign 1 is set at 3km, 2km and 1km away from the reference point, and at least one warning point sign 1 should be set outside the tunnel; warning point sign 2 is set at 500m, 300m and 100m away from the reference point, and it should be selected to be set inside or outside the tunnel according to actual conditions; action point sign 3 is set at the reference point; notification point sign 4 is set at the nose of the diversion triangle; the lane dividing line of the main road is set as a solid line before the 1km warning point and as a dotted line after the 1km warning point; this setting method can induce the driver to change to the outermost lane in the tunnel, thereby inducing lane division in advance.

[0049] When the distance between the tunnel exit and the interchange exit is greater than 15 seconds, although the distance for exit sign recognition and lane change is met, the driver's reaction distance is still small; the reference point is set outside the tunnel, and warning point sign 1 is set at 3km, 2km and 1km away from the reference point respectively. It should be ensured that all warning point sign are set in the tunnel. If the conditions are not met, it can be reduced; warning point sign 2 is set at 500m, 300m and 100m away from the reference point respectively, and it should be selected to be set inside or outside the tunnel according to the actual situation; action point sign 3 is set at the reference point; notification point sign 4 is set at the nose of the diversion triangle; the lane dividing line of the main road is set as a solid line in the tunnel, and becomes a dotted line 120~150m after the tunnel exit; this setting method can strengthen the guidance of the exit, so that the driver can understand the exit information and be prepared to leave the main line.

[0050] If the warning point sign 1, the alert point sign 2, the action point sign 3 and the notification point sign 4 are set up in the tunnel, LED self-luminescence shall be adopted, and the supporting structure shall be suspended on the top of the tunnel; if they are set up outside the tunnel, the surface of the sign shall be covered with retroreflective film, the warning point sign 1 and the alert point sign 2 shall adopt a gantry support structure, and the action point sign 3 and the notification point sign 4 shall adopt a single cantilever support structure; the size of the signboard shall be in accordance with the standard size of the corresponding sign in "Road Traffic Signs and Markings Part 2: Road Traffic Signs" (GB 5768.2-2022).

[0051] The advance point sign 1 includes a main line information advance sign 11 and an exit information advance sign 12. If the main line information advance sign 11 is set in a tunnel, the shape of the signboard of the main line information advance sign 11 is an upper arch + a lower rectangle, and the upper arch height is 0.5 to 0.6 times the width of the signboard. If it is set outside the tunnel, the shape of the signboard of the main line information advance sign 11 is a square, and the sign surface is provided with an upper arch + a lower rectangular road name information outer frame, and the size of the road name information outer frame can be the same as the size of the traffic sign in the tunnel (the same below), to ensure the continuity and consistency of the guidance; If the exit information advance sign 12 is set in the tunnel, the shape of the exit information advance sign 12 is a left rectangle + a right arch, and the height of the right arch is 0.2~0.3 times the length of the sign. If it is set outside the tunnel, the shape of the exit information advance sign 12 is a square, and the sign layout is provided with a left rectangle + a right arched road name information outer frame, and an exit number sign is provided on the top of the sign. The main line and exit signboards are differentiated in shape, with the main line arched at the upper part and the exit arched on the right, which can imply the diversion direction, enable drivers to clearly understand the diversion direction, and improve self-explanation.

[0052] The warning point sign 2 includes a main line information warning sign 21 and an exit information warning sign 22. The main line information warning sign 21 and the main line information warning sign 11 adopt the same setting method; if the exit information warning sign 22 is set in the tunnel, the signboard shape of the exit information warning sign 22 is an upper sharp corner + a lower left rectangle + a lower right arch. If it is set outside the tunnel, the signboard shape of the exit information warning sign 22 is a square, and the sign layout is provided with an upper sharp corner + a lower left rectangle + a lower right arch road name information outer frame, and an exit number sign is provided at the top of the sign. The shape of the upper sharp corner + lower left rectangle + lower right arch of the exit information warning sign 22 and the outer frame of the road name information change with the distance from the exit: at the 500m warning point, the upper sharp corner accounts for 1 / 3 of the total shape height, and the lower part accounts for 2 / 3; at 300m, the upper sharp corner accounts for 1 / 2, and the lower part accounts for 1 / 2; at 100m, the upper sharp corner accounts for 2 / 3, and the lower part accounts for 1 / 3. The setting method of changing the upper sharp corner of the exit sign can make the driver clear about the driving tasks at different points. The closer the distance to the exit, the greater the proportion of the sharp corner and the more prominent the sharp corner, which means that the driving task is more urgent and the driver urgently needs to make changes in driving operations, thereby enhancing the self-explanatory nature of the inductive information.

[0053] The layout information of the main line information advance sign 11 and the main line information warning sign 21 includes an arrow pointing downward to the lane and road name information. If the main line information advance sign 11 and the main line information warning sign 21 are set in the tunnel, they will be in red with white characters; if the main line information advance sign 11 and the main line information warning sign 21 are set outside the tunnel, they will be in green with white characters, and the outer frame of the road name information will be red. The layout information of the exit information advance sign 12 and the exit information warning sign 22 includes an arrow pointing diagonally to the upper right to indicate the driving direction, the exit road name information and the exit distance. If the exit information advance sign 12 and the exit information warning sign 22 are set in the tunnel, they will be in blue with white characters; if the exit information advance sign 12 and the exit information warning sign 22 are set outside the tunnel, they will be in green with white characters, and the outer frame of the road name information will be blue. In addition, a fluorescent yellow-green inner frame is provided at the upper sharp corner of the exit information warning sign 22, and the line width of the inner frame can be set to 0.3 to 0.5 times the height of the font inside the sign; the layout information of the exit number sign includes a diversion direction pattern and an exit number; this setting method guides the main line and the exit into lanes and uses red and blue to distinguish them, which makes it easier for drivers to identify the main line and the exit. In addition, the fluorescent yellow-green color is integrated into the sharp corner of the exit side sign to enhance the warning of the exit.

[0054] Action point sign 3 only retains exit information. If action point sign 3 is set in the tunnel, the shape of the signboard changes from the 2 / 3 upper sharp corner at the 100m warning point to the 3 / 3 sharp corner, that is, a triangle, indicating that the driving task is urgent and the driver must change the driving operation and enter the deceleration lane to leave the main line. If action point sign 3 is set outside the tunnel, the shape of the signboard is square, the sign layout is set with a triangular road name information outer frame, and the top of the sign is set with an exit number mark; the layout information of action point sign 3 includes an arrow pointing diagonally to the upper right to indicate the driving direction and the exit road name information. If action point sign 3 is set in the tunnel, it uses fluorescent yellow-green background with white characters, and if action point sign 3 is set outside the tunnel, it uses green background with white characters, and the outer frame of the road name information is fluorescent yellow-green, which increases the prominence of the exit information and gives strong stimulation to the driver.

[0055] The notification point sign 4 is square in shape, and has a triangular outer frame of the road name information. The layout information includes an arrow indicating the ramp line shape of a large curve and the exit road name information, which can enable the driver to recognize the ramp line shape in advance and enhance the sense of direction; the layout uses white text on a green background, and the outer frame of the road name information is fluorescent yellow-green. A large-sized exit number sign with the same width as the notification point sign is set on the top of the sign. The large-sized exit number sign includes a diversion direction pattern, exit number and a yellow flashing light, which can make the exit information more visible at a distance.

[0056] A road surface text sign 5 is set 40-60m before the warning point sign 1, the warning point sign 2, the action point sign 3 and the notification point sign 4, which includes a large color outer frame, a small white text outer frame, a white directional arrow and white road name information text; the size of the white directional arrow and the white road name information text shall be set in accordance with the standard size of "Road Traffic Signs and Markings Part 3: Road Traffic Lines" (GB 5768.3-2009); the total length of the large color outer frame shall not be less than 1.5-1.8 times the total length of the white directional arrow and the white road name information text, and the width shall be 0.7-0.8 times the lane width. When the large color outer frame is set on the main line side lane, the color is red and the front part is arched. When the large color outer frame is set on the exit side lane, the color is blue and the front part is right arrow-shaped. The line width of the small white text outer frame is 8-12cm. When the small white text is set on the main line side lane, it is oval-shaped, and when the small white text is set on the exit side lane, it is right arrow-shaped. The color, shape and signs of the road text markings are coordinated to provide drivers with good lane guidance information.

[0057] The oblique arched reflective strip 6 is arranged at the warning point sign 2 in the tunnel, with a length of 1.6-1.8m, a cross-sectional width of 15-20cm, an arch height of 12-15cm, five reflective strips are arranged at the 500m warning point sign 2, three at 300m, and one at 100m, and the oblique arched reflective strip 6 is inclined to the driving direction, and the surface of the oblique arched reflective strip 6 is affixed with a reflective film, the color of the reflective film arranged on the main line side is red, and the color of the reflective film on the exit side is blue. By adopting such a setting method, the driver's sense of distance can be enhanced, the distance from the exit can be clearly defined, and the significance of the warning point can be enhanced, prompting the driver to complete the driving task.

[0058] The belt line 7 is set in red on the side wall of the tunnel on the main line side and in blue on the side wall of the tunnel on the exit side. Starting from 500m away from the warning point sign 2, a fishbone arrow-shaped vertical surface mark 8 is set every 30~50m on the belt line 7 on the side wall of the tunnel near the exit. The center line of the fishbone arrow-shaped vertical surface mark 8 is set at the center line position of the belt line 7, with a top angle of 30~50° and a center line bottom angle of 70~90°. The inside of the fishbone arrow-shaped vertical surface mark 8 is coated with yellow-black reflective stripes with an inclination angle of 45°, which can provide strong induction information for the exit side and enhance the prominence of the exit.

[0059] The setting range of the directional induction column 9 is from 20~40m in front of the tunnel exit to 200~250m outside the tunnel exit. The directional induction column 9 is set close to the edge of the maintenance road. The setting interval of the directional induction column 9 is 2~3m. The column body is affixed with reflective film, red and white on the main line side, and blue and white on the exit side. The top of the directional induction column 9 is provided with a self-luminous strobe fluorescent yellow-green small ball light 91; when the directional induction column 9 is set near the tunnel gate, the height is 2~2.4m, and the farther away from the tunnel gate, the lower the height is, and finally 1~1.2m. A large-sized combined linear induction sign 93 is set between two consecutive induction column bodies 92.

[0060] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the protection of the present invention.

Claims

1. A self-explanatory small-spacing tunnel-interchange section path guidance system, characterized in that: It includes a sign and marking guidance system and a sight guidance system, which are set according to the spacing conditions, and the spacing conditions are divided into three situations: the spacing between the tunnel exit and the interchange exit is less than 6s travel, the spacing between the tunnel exit and the interchange exit is greater than 6s travel and less than 15s travel, and the spacing between the tunnel exit and the interchange exit is greater than 15s travel; the sign and marking guidance system includes a warning point sign, a warning point sign, an action point sign, a notification point sign and a road text mark, and the sight guidance system includes an oblique arched reflective strip, a belt line, a fishbone arrow-shaped vertical mark and a directional guidance column; the oblique arched reflective strip is set on the tunnel side wall, the belt line is continuously set on the tunnel side wall, the fishbone arrow-shaped vertical mark is set on the belt line, and the directional guidance column is set at the edge of the tunnel exit maintenance road; When the distance between the tunnel exit and the interchange exit is less than 6s travel, the starting point of the gradual change section of the exit deceleration lane of the tunnel-interchange is the reference point, and the reference point is set in the tunnel; warning point signposts are set at 3km, 2km and 1km away from the reference point, and there are no less than two warning point signposts in the tunnel; warning point signposts are set at 500m, 300m and 100m away from the reference point; action point signposts are set at the reference point; the area separating the main line side and the exit side of the tunnel-interchange is the diversion triangle, and a notification point signpost is set at the nose of the diversion triangle; the lane dividing lines on the main line side and the exit side of the tunnel-interchange are both set as dotted lines; When the distance between the tunnel exit and the interchange exit is greater than 6s travel and less than 15s travel, the reference point is set outside the tunnel; warning point signposts are set at 3km, 2km and 1km away from the reference point, and there is no less than one warning point signpost outside the tunnel; warning point signposts are set at 500m, 300m and 100m away from the reference point; an action point signpost is set at the reference point; a notification point signpost is set at the nose of the diversion triangle; the lane dividing lines on the main line side and the exit side of the tunnel-interchange are set as solid lines before the 1km warning point signpost and as dotted lines after the 1km warning point signpost; When the distance between the tunnel exit and the interchange exit is greater than 15 seconds, the reference point is set outside the tunnel, and warning point signs are set at 3km, 2km, and 1km away from the reference point, and the warning point signs are set inside the tunnel; warning point signs are set at 500m, 300m, and 100m away from the reference point; An action point sign is set at the reference point; a notification point sign is set at the nose of the diversion triangle; the lane dividing lines on the main line side and the exit side of the tunnel-interchange are set as solid lines in the tunnel and as dotted lines 120~150m after the tunnel exit.

2. The self-explanatory small-spacing tunnel-interchange section path guidance system according to claim 1 is characterized in that: The warning point sign, warning point sign, action point sign and notification point sign set in the tunnel are all LED self-luminous and hung on the top of the tunnel; The surfaces of the warning point sign, alert point sign, action point sign and notification point sign set outside the tunnel are all provided with retroreflective film, the warning point sign and alert point sign adopt a gantry support structure, and the action point sign and notification point sign adopt a single cantilever support structure.

3. The self-explanatory small-spacing tunnel-interchange section path guidance system according to claim 2 is characterized in that: The warning point signpost includes a main line information warning sign, an exit information warning sign and an exit number sign; the main line information warning sign arranged in the tunnel has a signboard shape of an upper arch + a lower rectangle, the main line information warning sign arranged outside the tunnel has a signboard shape of a square and the sign layout is provided with an upper arch + a lower rectangular road name information outer frame; the exit information warning sign arranged in the tunnel has a signboard shape of a left rectangle + a right arch, the exit information warning sign arranged outside the tunnel has a signboard shape of a square and the sign layout is a left rectangle + a right arch road name information outer frame, and an exit number sign is provided on the top of the exit information warning sign arranged outside the tunnel; The warning point signpost includes a main line information warning sign, an exit information warning sign and an exit number sign. The main line information warning sign set in the tunnel has a signboard shape of an upper arch + a lower rectangle, and the main line information warning sign set outside the tunnel has a square shape and the sign layout is provided with an upper arch + a lower rectangular road name information outer frame; the exit information warning sign set in the tunnel has a signboard shape of an upper sharp corner + a lower left rectangle + a lower right arch; the exit information warning sign set outside the tunnel has a square shape and the sign layout is The road name information outer frame is composed of an upper sharp corner + a lower left rectangle + a lower right arch, and an exit number mark is set on the top of the exit information warning sign outside the tunnel; when the exit information warning sign outside the tunnel is 500m away from the reference point, the upper sharp corner occupies 1 / 3 of the total shape height and the lower part occupies 2 / 3; when the exit information warning sign outside the tunnel is 300m away from the reference point, the upper sharp corner occupies 1 / 2 and the lower part occupies 1 / 2; when the exit information warning sign outside the tunnel is 100m away from the reference point, the upper sharp corner occupies 2 / 3 and the lower part occupies 1 / 3; The action point signpost is provided with exit information, and the signboard of the action point signpost set in the tunnel is triangular in shape; the signboard of the action point signpost set outside the tunnel is square in shape, and the layout of the action point signpost set outside the tunnel is provided with a triangular outer frame of the road name information, and the top of the action point signpost set outside the tunnel is provided with an exit number mark; The notification point sign is square in shape, and a triangular outer frame of road name information is arranged on the layout of the notification point sign. A large-sized exit number sign is arranged on the top of the notification point sign, and the large-sized exit number sign is the same width as the notification point sign.

4. The self-explanatory small-spacing tunnel-interchange section path guidance system according to claim 3 is characterized in that: The layout information of the main line information advance sign and the main line information warning sign includes arrows and road name information indicating the lane downwards. The arrows and road name information of the main line information advance sign and the main line information warning sign arranged in the tunnel are white characters on a red background, and the arrows and road name information of the main line information advance sign and the main line information warning sign arranged outside the tunnel are white characters on a green background, and the outer frame of the road name information is red; the layout information of the exit information advance sign and the exit information warning sign includes arrows indicating the driving direction obliquely to the upper right, exit road name information and exit distance. The exit information advance sign and the exit information warning sign arranged in the tunnel are white characters on a blue background, and the exit information advance sign and the exit information warning sign arranged outside the tunnel are white characters on a green background, and the outer frame of the exit road name information is blue, and a fluorescent yellow-green inner frame is set at the upper sharp corner of the exit information warning sign; the layout information of the exit number sign includes a diversion direction pattern and an exit number; The layout information of the action point sign includes an arrow pointing diagonally to the upper right to indicate the driving direction and the exit road name information. The action point sign set in the tunnel is fluorescent yellow-green with white characters, and the action point sign set outside the tunnel is green with white characters, and the outer frame of the exit road name information is fluorescent yellow-green; The notification point sign includes an arrow indicating the ramp line of a large curve, exit road name information and a large-sized exit sign. The layout of the notification point sign is white text on a green background, and the outer frame of the exit road name information is fluorescent yellow-green; the large-sized exit number sign includes a diversion direction pattern, a yellow flashing light and an exit number arranged side by side.

5. The self-explanatory small-spacing tunnel-interchange section path guidance system according to claim 1 is characterized in that: Road surface text markings are set 40 to 60 meters before the warning point sign, warning point sign, action point sign and notification point sign, and the road surface text markings include a large color outer frame, a small white text outer frame, a white directional arrow and white road name information text; the large color outer frame set in the main line side lane is red and the front is arched, and the large color outer frame set in the exit side lane is blue and the front is right arrow-shaped; the line width of the small white text outer frame is 8 to 12 cm, the small white text outer frame set in the main line side lane is oval, and the small white text outer frame set in the exit side lane is right arrow-shaped.

6. The self-explanatory small-spacing tunnel-interchange section path guidance system according to claim 1, characterized in that: The oblique arched reflective strips are arranged at the warning point sign in the tunnel. Five oblique arched reflective strips are arranged at the 500m warning point sign, three oblique arched reflective strips are arranged at the 300m warning point sign, and one oblique arched reflective strip is arranged at the 100m warning point sign. The oblique arched reflective strips are inclined in the driving direction. The oblique arched reflective strips arranged on the main line side are red, and the oblique arched reflective strips arranged on the exit side are blue.

7. The self-explanatory small-spacing tunnel-interchange section path guidance system according to claim 1, characterized in that: The belt line is continuously set along the entire tunnel. The belt line set on the side wall of the tunnel on the main line side is red, and the belt line set on the side wall of the tunnel on the exit side is blue. Starting from 500m from the warning point, a fishbone arrow-shaped vertical mark is set every 30 to 50m on the belt line on the side wall of the tunnel near the exit side.

8. The self-explanatory small-spacing tunnel-interchange section path guidance system according to claim 1, characterized in that: The directional induction column is set in the range of 20~40m before the tunnel exit to 200~250m outside the tunnel exit. The directional induction column is set close to the edge of the maintenance road, and the distance between adjacent directional induction columns is 2~3m; the directional induction column includes a self-luminous stroboscopic fluorescent yellow-green ball lamp, an induction column body and a large-size combined linear induction sign. The induction column body is provided with a reflective film. The induction column body set on the main line side is red and white, and the induction column body set on the exit side is blue and white. A self-luminous stroboscopic fluorescent yellow-green ball lamp is set on the top of the induction column body; the height of the induction column body gradually decreases from the tunnel portal to the outside of the tunnel; a large-size combined linear induction sign is set between adjacent induction column bodies.

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