A straight right variable lane at a signalized intersection and a dynamic control method thereof

Abstract

The present invention proposes a straight right variable lane at a signalized intersection and a dynamic control method thereof. The straight right variable lane at the signalized intersection includes a variable lane, a right turn lane, a straight lane, a lane change opening and an intersection. The downstream part of the right turn lane is provided with a variable lane, and a lane change opening is provided between the variable lane and the right turn lane; an electronic lane indicator is provided on the variable lane, and coordinated control signal lights are provided at the intersection and the lane change opening. When the vehicles on the straight lane are in a peak state, they can be diverted through the variable lane to disperse the pressure. When the straight red light of the intersection signal light quickly turns to a green light, the second signal light of the lane change opening turns green, so that the straight-going vehicles on the straight lane pass through the lane change opening and enter the variable lane. At this time, the first signal light located on the opening stop line of the right turn lane turns red, prohibiting the right-turning vehicles on the right-turn lane from entering the variable lane, so as to prevent the right-turning vehicles from colliding with the straight-going vehicles merging in and causing safety hazards.

Description

Technical Field

[0001] The invention relates to the field of intersection traffic organization, and in particular to a straight right variable lane at a signalized intersection and a dynamic control method thereof. Background Art

[0002] In daily life, we will find that when there is a right-turn lane at the intersection, the queue lane on the straight lane is very long, but there are few vehicles traveling on the right-turn lane, which to a large extent causes a waste of space at the intersection. In order to solve this problem, the classic solution is to set up a straight right lane to improve the space utilization rate of the intersection. However, this method also has certain disadvantages. When the intersection is red and the first vehicle on the straight right lane is a straight vehicle, all the right-turning vehicles behind will be stranded at the intersection, which to a certain extent causes a waste of time at the intersection and greatly increases the delay time of right-turning vehicles. The occurrence of these phenomena not only causes a waste of time and space resources at the intersection, but also increases the emission of motor vehicle pollutants. At the same time, the travel experience of citizens has also decreased. In order to improve the utilization rate of time and space resources at the intersection, reduce the emission of motor vehicles at the intersection, and improve the experience of citizens in travel services, finding an effective solution has become an important part of the implementation of improvement measures. Summary of the invention

[0003] The purpose of the present invention is to provide a signalized intersection straight right variable lane and a dynamic control method thereof, which can effectively improve the time and space utilization rate of the intersection, thereby alleviating the traffic pressure at the intersection to a certain extent, reducing the emissions of automobiles at the intersection, and improving the comfort of citizens' transportation.

[0004] In order to achieve the above-mentioned object, the present invention proposes a signalized intersection straight right variable lane, comprising a variable lane, a right turn lane, a straight lane, a lane change opening and an intersection, wherein the right turn lane and the straight lane ends are both connected to the intersection, and the right turn lane and the straight lane are adjacent lanes;

[0005] The variable lane is provided at the downstream portion of the right-turn lane, that is, the variable lane and the right-turn lane are on the same straight lane, and the variable lane is connected to the intersection, and the lane change opening is provided between the variable lane and the right-turn lane;

[0006] The variable lane is provided with an electronic lane indicator sign, and the intersection and the lane change opening are both provided with signal lights for coordinated control.

[0007] Furthermore, in the straight right variable lane at the signalized intersection, an opening stop line and a first signal light are provided at the junction of the lane change opening and the right turn lane, and the first signal light is directly opposite the right turn lane; a second signal light is provided at the junction of the lane change opening and the variable lane, and the second signal light is directly opposite the straight lane.

[0008] Furthermore, in the straight right variable lane at the signalized intersection, an intersection stop line is provided at the junction of the variable lane and the intersection, and an intersection signal light and a pedestrian signal light are provided at the intersection.

[0009] Furthermore, in the straight right variable lane at the signalized intersection, the electronic lane sign displays indicator arrows "straight right arrow" and "right turn arrow".

[0010] Furthermore, in the straight right variable lane at the signalized intersection, a gantry is provided on the variable lane near the lane change opening, and the electronic lane sign is arranged on the gantry.

[0011] Furthermore, in the straight right variable lane at the signalized intersection, the distance between the electronic lane sign and the lane change opening is 5m; and the opening length of the lane change opening is 10m.

[0012] Furthermore, in the straight right variable lane at the signalized intersection, a guardrail is provided between the variable lane and the straight lane.

[0013] Furthermore, in the straight right variable lane at the signalized intersection, a right-turn straight one-way lane-changing dividing line is provided between the right-turn lane and the straight lane.

[0014] The present invention also proposes a dynamic control method for a straight right variable lane at a signalized intersection, comprising the following steps:

[0015] S1: According to the distance between the stop line at the junction of the variable lane and the intersection and the lane change opening, the maximum queue length of vehicles on the variable lane is obtained as Lm; when the straight green light of the intersection signal light at the intersection is on, the straight green light time required for vehicles with a queue length of Lm on the variable lane to pass the stop line at the intersection is obtained as Ts;

[0016] S2: When there is still Ts left before the straight red light of the intersection signal light ends, the red light of the first signal light on the lane change opening turns on, and the vehicles on the right turn lane stop before the opening stop line; at the same time, the green light of the second signal light on the lane change opening turns on, and the vehicles on the straight lane pass through the lane change opening and enter the variable lane; the electronic lane indicator on the variable lane displays a red "straight right arrow", and the vehicles on the variable lane stop before the intersection stop line;

[0017] S3: When the straight green light of the intersection signal light is on, the green light of the first signal light is on, and the vehicle on the right turn lane drives into the variable lane; the "straight right arrow" displayed on the electronic lane indicator changes from red to green, and the vehicle on the variable lane goes straight or turns right at the intersection; at this time, the second signal light is still green;

[0018] S4: When there is still T+3s left before the straight green light of the intersection signal light ends, the red light of the second signal light turns on, prohibiting vehicles on the straight lane from entering the variable lane through the lane change opening; the display of the electronic lane indicator changes from a green "straight right arrow" to a green "right turn arrow", and the vehicle on the variable lane turns right at the intersection; at this time, the first signal light is still green;

[0019] S5: When the red light for going straight at the intersection lights up again, the current cycle ends and the process goes to S2 to start the next cycle.

[0020] Furthermore, in the dynamic control method of the straight right variable lane at the signalized intersection, when the straight green light of the intersection signal light is on, the straight green light of the pedestrian signal light is on, and the straight green light duration of the pedestrian signal light is less than or equal to the straight green light duration of the intersection signal light.

[0021] Compared with the prior art, the beneficial effects of the present invention are mainly reflected in: in peak state, the straight lane is diverted by the variable lane; in low-peak state, the lane is changed by the cooperation of the one-way lane-changing dividing line and the lane-changing opening, so as to quickly enter the variable lane. The variability of the variable lane as a tidal lane is fully utilized to effectively adjust the vehicle emissions in each time period and improve the traffic efficiency of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the straight right variable lane at the signalized intersection of the present invention.

[0023] Among them: variable lane 1, right turn lane 2, straight lane 3, lane change opening 4, intersection 5, electronic lane sign 6, opening stop line 7, first signal light 8, second signal light 9, intersection stop line 10, intersection signal light 11, gantry 12, railing 13, tidal lane marking 14, tidal lane marking 15, pedestrian signal light 16. DETAILED DESCRIPTION

[0024] The following will be described in more detail in conjunction with the schematic diagram of the signalized intersection straight right variable lane and the dynamic control method thereof of the present invention, wherein the preferred embodiment of the present invention is shown, and it should be understood that those skilled in the art can modify the present invention described herein, and still achieve the advantageous effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art, and not as a limitation of the present invention.

[0025] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0026] In the present invention, unless otherwise specified and limited, the terms "assemble", "connect", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in illustrating the purpose of the embodiments of the present invention.

[0028] like Figure 1 As shown, the present invention proposes a straight-right variable lane at a signalized intersection, comprising a variable lane 1, a right-turn lane 2, a straight lane 3, a lane-changing opening 4 and an intersection 5, wherein ends of the right-turn lane 2 and the straight lane 3 are both connected to the intersection 5, the right-turn lane 2 and the straight lane 3 are adjacent lanes, and the right-turn lane 2 is located on the right side of the straight lane 3.

[0029] Furthermore, a variable lane 1 is provided at the downstream portion of the right-turn lane 2, that is, the variable lane 1 and the right-turn lane 2 are on the same straight line, and the variable lane 1 is connected to the intersection 5. The variable lane 1 is provided with a tidal lane marking 15, and a lane-changing opening 4 is provided between the variable lane 1 and the right-turn lane 2, and the opening length of the lane-changing opening 4 is 10m. Signal lights for coordinated control are provided at the intersection 5 and the lane-changing opening 4.

[0030] At the same time, a gantry 12 is provided near the lane change opening 4 on the variable lane 1, and an electronic lane sign 6 is installed on the gantry 12, that is, the electronic lane sign 6 is installed above the variable lane 1 through the gantry 12, and since the distance between the electronic lane sign 6 and the lane change opening 4 is 5m, that is, the distance between the gantry 12 and the lane change opening 4 is 5m. Among them, the electronic lane sign 6 displays the indicator arrows "straight right arrow" and "right turn arrow", and the content displayed on the electronic lane sign 6 changes in real time according to the signal light of the intersection 5. A guardrail 13 is provided between the variable lane 1 and the straight lane 3 to prevent lane change between the variable lane 1 and the straight lane 3.

[0031] Specifically, a stop line 10 is provided at the junction of the variable lane 1 and the intersection 5, and a traffic light 11 and a pedestrian light 16 are provided at the intersection 5. An opening stop line 7 and a first light 8 are provided at the junction of the lane change opening 4 and the right turn lane 2, and the first light 8 faces the right turn lane 2; a second light 9 is provided at the junction of the lane change opening 4 and the variable lane 1, and the second light 9 faces the straight lane 3. Since both ends of the guardrail 13 are placed between the stop line 10 and the lane change opening 4, the second light 9 is located at the end of the guardrail.

[0032] Furthermore, a one-way lane-changing dividing line 14 for right-turn straight is provided between the right-turn lane 2 and the through lane 3, and the one-way lane-changing dividing line 14 includes a white dotted line near the right-turn lane 2 and a white solid line near the through lane 3. Since the line near the right-turn lane 2 is a dotted line, it is convenient for right-turning vehicles to enter the through lane 3 from the right-turn lane 2 through the one-way lane-changing dividing line 14 during low-peak conditions on the through lane 3, and pass the opening stop line 7 on the right-turn lane 2 from the lane-changing opening 4; since the line near the through lane 3 is a solid line, a through vehicle that wants to use the variable lane 1 for passage can only enter the variable lane 1 through the lane-changing opening 4.

[0033] like Figure 1 As shown, the present invention proposes a dynamic control method for the straight right variable lane at a signalized intersection, which can effectively improve the time and space utilization rate of the intersection, reduce the emission of vehicles at the intersection, and improve the comfort of citizens' transportation. When the straight lane 3 is in peak state, in order to disperse the traffic pressure, the variable lane 1 is used for diversion, which specifically includes the following steps:

[0034] S1: According to the distance between the stop line 10 at the junction of the variable lane 1 and the intersection 5 and the lane change opening 4, the maximum queue length of vehicles on the variable lane 1 is obtained as Lm; when the straight green light of the intersection signal light 11 at the intersection 5 is on, the straight green light time required for the vehicles in the variable lane 1 with a queue length of Lm to pass the stop line 10 is obtained as Ts;

[0035] S2: When there is still Ts left before the straight red light of the intersection signal light 11 ends, the red light of the first signal light 8 on the lane change opening 4 turns on, and the vehicles on the right turn lane 2 stop before the opening stop line 7; at the same time, the green light of the second signal light 9 on the lane change opening 4 turns on, and the vehicles on the straight lane 3 pass through the lane change opening 4 and enter the variable lane 1; the electronic lane indicator 6 on the variable lane 1 displays a red "straight right arrow", and the vehicles on the variable lane 1 stop before the intersection stop line 10;

[0036] S3: When the straight green light of the intersection signal light 11 is on, the green light of the first signal light 8 is on, and the vehicle on the right turn lane 2 drives into the variable lane 1; the "straight right arrow" displayed on the electronic lane indicator 6 changes from red to green, and the vehicle on the variable lane 1 drives straight or turns right at the intersection 5; at this time, the second signal light 9 is still green;

[0037] S4: When there is still T+3s left before the straight green light of the intersection signal light 11 ends, the red light of the second signal light 9 turns on, prohibiting vehicles on the straight lane 3 from entering the variable lane 1 through the lane change opening 4; the display of the electronic lane indicator 6 changes from the green "straight right arrow" to the green "right turn arrow", and the vehicles on the variable lane 1 turn right at the intersection 5; at this time, the first signal light 8 is still green;

[0038] S5: When the red light of the straight-ahead traffic light 11 at the intersection turns on again, the current cycle ends and the process goes to S2 to start the next cycle.

[0039] In addition, when the straight green light of the intersection signal light 11 is on, the straight green light of the pedestrian signal light 16 is on, and the straight green light duration of the pedestrian signal light 16 is less than or equal to the straight green light duration of the intersection signal light 11, so that the green light time of the pedestrian signal light 16 downstream of the right turn direction ends in advance. Specifically, the first half of the traffic on the variable lane 1 is straight-moving vehicles. At this time, there is no conflict between the vehicles and pedestrians crossing the street, which facilitates pedestrians and motor vehicles to cross the street. However, when the straight-moving vehicles on the variable lane 1 are all released, the subsequent traffic is mostly right-turning vehicles. Since right-turning vehicles conflict with pedestrians, the green light time of the pedestrian signal light 16 can be ended in advance, improving the safety of pedestrians crossing the street, reducing the conflict between pedestrians and right-turning vehicles, and also improving the traffic efficiency of right-turning vehicles.

[0040] Here’s how it works:

[0041] When there are too many straight-moving vehicles on the straight lane 3 and the traffic is at a peak, the variable lane 1 can be used to divert the vehicles and disperse the pressure. That is, when the straight-moving red light of the intersection signal light 11 quickly turns green, the second signal light 9 of the lane change opening 4 turns green, allowing the straight-moving vehicles on the straight lane 3 to enter the variable lane 1 through the lane change opening 4. At this time, the first signal light 8 on the opening stop line 7 of the right-turn lane 2 turns red, prohibiting the right-turning vehicles on the right-turn lane 2 from entering the variable lane 1, so as to prevent the right-turning vehicles from colliding with the merging straight-moving vehicles and causing safety hazards.

[0042] When there are too few straight-moving vehicles on the straight lane 3 and it is in a low-peak state, if the first signal light 8 on the opening stop line 7 of the right-turn lane 2 is in red light state, the right-turning vehicles on the right-turn lane 2 can cross the one-way lane change dividing line 14 to enter the straight lane 3, pass through the lane change opening 4 to avoid the first signal light 8 on the right-turn lane 2, pass the opening stop line 7, and then pass through the lane change opening 4 to enter the variable lane 1.

[0043] In summary, in this embodiment, the proposed signalized intersection straight right variable lane and its dynamic control method, in peak state, diverts the straight lane through the variable lane; in low peak state, the lane is changed through the coordination of the one-way lane change boundary line and the lane change opening, so as to quickly enter the variable lane. The variability of the variable lane as a tidal lane is fully utilized to effectively adjust the vehicle emissions in each time period and improve the traffic efficiency of the vehicle.

[0044] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. A dynamic control method for a straight right variable lane at a signalized intersection, characterized in that: The straight-right variable lane at a signalized intersection comprises a variable lane (1), a right-turn lane (2), a straight lane (3), a lane-changing opening (4) and an intersection (5), wherein ends of the right-turn lane (2) and the straight lane (3) are both connected to the intersection (5), and the right-turn lane (2) and the straight lane (3) are adjacent lanes; The variable lane (1) is provided at the downstream portion of the right-turn lane (2), that is, the variable lane (1) and the right-turn lane (2) are on the same straight lane, and the variable lane (1) is connected to the intersection (5), and the lane change opening (4) is provided between the variable lane (1) and the right-turn lane (2); The variable lane (1) is provided with an electronic lane indicator (6), on which an indicator arrow "straight right arrow" and a "right turn arrow" are displayed; the intersection (5) and the lane change opening (4) are both provided with coordinated control signal lights; An opening stop line (7) and a first signal light (8) are provided at the junction of the lane change opening (4) and the right-turn lane (2), and the first signal light (8) is directly opposite the right-turn lane (2); a second signal light (9) is provided at the junction of the lane change opening (4) and the variable lane (1), and the second signal light (9) is directly opposite the straight lane (3); an intersection stop line (10) is provided at the junction of the variable lane (1) and the intersection (5), and an intersection signal light (11) and a pedestrian signal light (16) are provided at the intersection (5); The dynamic control method of the straight right variable lane at the signalized intersection comprises the following steps: S1: according to the distance between the intersection stop line (10) provided at the junction of the variable lane (1) and the intersection (5) and the lane change opening (4), the maximum queue length of vehicles on the variable lane (1) is obtained as Lm; when the straight green light of the intersection signal light (11) at the intersection (5) is on, the straight green light time Ts required for the vehicles on the variable lane (1) with a queue length of Lm to pass the intersection stop line (10) is obtained; S2: When there is still Ts left before the straight red light of the intersection signal light (11) ends, the red light of the first signal light (8) on the lane change opening (4) turns on, and the vehicles on the right turn lane (2) stop before the opening stop line (7); at the same time, the green light of the second signal light (9) on the lane change opening (4) turns on, and the vehicles on the straight lane (3) pass through the lane change opening (4) and enter the variable lane (1); the electronic lane indicator (6) on the variable lane (1) displays a red "straight right arrow", and the vehicles on the variable lane (1) stop before the intersection stop line (10); S3: When the straight green light of the intersection signal light (11) is on, the green light of the first signal light (8) is on, and the vehicle on the right turn lane (2) drives into the variable lane (1); the "straight right arrow" displayed on the electronic lane indicator (6) changes from red to green, and the vehicle on the variable lane (1) drives straight or turns right at the intersection (5); at this time, the second signal light (9) is still green; S4: When there is still T+3s left before the straight green light of the intersection signal light (11) ends, the red light of the second signal light (9) lights up, prohibiting vehicles on the straight lane (3) from entering the variable lane (1) through the lane change opening (4); the display of the electronic lane indicator (6) changes from a green "straight right arrow" to a green "right turn arrow", and the vehicle on the variable lane (1) turns right at the intersection (5); at this time, the first signal light (8) is still green; S5: When the red light for going straight at the intersection signal light (11) lights up again, the current cycle ends and the process goes to S2 to start the next cycle.

2. The dynamic control method for the straight right variable lane at a signalized intersection according to claim 1 is characterized in that: A gantry (12) is provided on the variable lane (1) near the lane change opening (4), and the electronic lane sign (6) is arranged on the gantry (12).

3. The dynamic control method for the straight right variable lane at a signalized intersection according to claim 1 is characterized in that: The distance between the electronic lane indicator sign (6) and the lane change opening (4) is 5 m; and the opening length of the lane change opening (4) is 10 m.

4. The dynamic control method for the straight right variable lane at a signalized intersection according to claim 1 is characterized in that: A guardrail (13) is provided between the variable lane (1) and the straight lane (3).

5. The dynamic control method of the straight right variable lane at a signalized intersection according to claim 1 is characterized in that: A right-turn, straight-through, one-way lane-changing dividing line (14) is provided between the right-turn lane (2) and the straight-through lane (3).

6. The dynamic control method for the straight right variable lane at a signalized intersection according to claim 1, characterized in that: When the straight green light of the intersection signal light (11) is on, the straight green light of the pedestrian signal light (16) is on, and the straight green light duration of the pedestrian signal light (16) is less than or equal to the straight green light duration of the intersection signal light (11).

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