Traffic organization and signal timing system

Abstract

A traffic organization and signal timing system disclosed by the present invention comprises two crosswise arranged roads, intersection traffic signal lamps and video monitors which are cooperatively used are correspondingly installed at intersections of the two roads, and opposite lane boundaries are correspondingly arranged on the surfaces of the roads. And at least one left-turn guide lane, at least one straight guide lane and a non-motorized vehicle lane are sequentially arranged on each road on the entrance side of the intersection from the boundary of the opposite roadway to the outside. When the intersection video monitoring detects that the queue length of the exit lane is relatively long and overflows to the intersection or has a trend of overflowing to the intersection, a traffic organization signal timing scheme for synchronous left-turn vehicle rear waiting at the entrance lane by the tailgating is started, and the auxiliary signal lamp cooperates with the main signal lamp to perform coordination control, so that the traffic flow is ensured to be smooth, and the traffic efficiency is improved. And the intersection congestion condition is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic network, and in particular to a traffic organization and signal timing system. Background Art

[0002] Urban traffic organization mainly includes three aspects: micro-intersection traffic organization, meso-section traffic organization and macro-road network traffic organization. In particular, intersections, as key nodes in the urban road traffic network, provide a continuous source of transfer power for urban traffic operations. Urban congestion often starts from small intersections and gradually spreads to a road or an area, seriously affecting the normal operation of urban traffic. Therefore, it is particularly important to ensure the efficiency of intersection operations and improve road traffic capacity in the limited urban road space.

[0003] On the premise of keeping the road width unchanged, the existing traffic organization methods at intersections mainly include: (1) setting up variable lanes to improve the utilization rate of entrance roads; (2) setting up non-motorized vehicles and pedestrian crossing passages to ensure the right of way for slow-moving vehicles and reduce conflicts between vehicles and pedestrians; (3) prohibiting left turns and U-turns, and checking the conflict points of traffic flow at intersections; (4) setting up waiting areas to release the next phase in advance, shortening the intersection distance, and reducing travel time.

[0004] The existing traffic organization methods at intersections are all solutions to the congestion of the entrance lanes, which only solve the problem of "difficult entry", but in real life, the problem of "difficult exit" often occurs, that is, the number of upstream and downstream lanes is seriously mismatched, resulting in the inability of traffic to dissipate in time, and then overflowing to the intersection to cause a "knot" phenomenon. The present invention proposes a traffic organization and signal timing system that uses the opposite entrance lane to synchronize the left-turning vehicles waiting to turn. It can solve the problem of mismatch in the number of upstream and downstream lanes while ensuring the vehicle traffic capacity of the entrance lane, so that vehicles entering the exit lane can be quickly dissipated, and the traffic efficiency and service level of the intersection are improved. Summary of the invention

[0005] The main purpose of the present invention is to provide a traffic organization and signal timing system to solve the above technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides a traffic organization and signal timing system.

[0007] The traffic organization and signal timing system comprises: two intersecting roads, the intersection of the two roads is correspondingly equipped with a traffic light and a video monitor for use, the surface of each road is correspondingly provided with an opposite lane dividing line, and each road on the entrance side of the intersection is sequentially arranged from the opposite lane dividing line outwardly with at least one left turn guide lane, at least one straight guide lane and a non-motor vehicle lane; A video detector, a secondary signal light and a first variable lane sign are provided at the entrance of the left-turn guide lane, and a second variable lane sign is provided at the entrance of the opposite carriageway, and both the first variable lane sign and the second variable lane sign have variable markings pointing to the left-turn guide lane; When the video surveillance camera detects that the entrance to the opposite lane is overflowing with vehicles; Detecting, by means of the video detector, whether the vehicles in the left-turn guide lane have been cleared; When it is detected that the lane is clear, the first variable lane divider sign and the second variable lane divider sign are changed from a no-entry sign to a pass sign; The auxiliary signal lights and the traffic signal lights at the intersection are jointly coordinated and controlled.

[0008] In one embodiment, when the lane is detected to be clear, the step of changing the first variable lane sign and the second variable lane sign from a prohibition sign to a pass sign comprises: When the video detector on the left turn guide lane detects that the lane is clear; Turn the auxiliary signal light to red in advance, and at the same time adjust the first variable lane sign above the left-turn guide lane to the pass sign, so that the left-turn guide lane is adjusted to the opposite lane for passing.

[0009] In one embodiment, when the lane is detected to be clear, the step of changing the first variable lane sign and the second variable lane sign from a prohibition sign to a pass sign comprises: The auxiliary signal light turns yellow in advance, and after the yellow light ends, it is set to full red. At this time, the first variable lane sign is adjusted to a no-entry sign to clear the vehicles in the left-turn guide lane; When the vehicles in the left-turn guide lane are cleared, the auxiliary signal light turns green and the left-turn guide lane is used normally as a left-turn lane.

[0010] In one embodiment, the step of turning the auxiliary signal light red in advance and adjusting the first variable lane sign above the left-turn guide lane to a pass sign so that the left-turn guide lane is adjusted to the opposite lane for passing includes: Adjust the second variable lane sign to a no-entry sign.

[0011] In one embodiment, when the queue length of vehicles prohibited from entering the opposite lane is short and has not overflowed to the intersection to affect traffic, the intersection maintains a regular signal timing plan, with east-west straight and left turns placed in opposite directions, and north-south straight and left turns placed in opposite directions, and the auxiliary signal lights are in a permanent green or off state.

[0012] The present invention is applicable to situations where the space at the intersection is limited, the number of lanes on the entrance and exit lanes is obviously mismatched, the left-turn traffic flow is unbalanced, and the instantaneous traffic flow direction is large. Compared with the prior art, the present invention has the following advantages: (1) The present invention provides a traffic organization and signal timing system for dynamic intelligent control of import lanes and exit lanes based on spatiotemporal optimization; (2) The present invention can effectively adjust the number of lanes of the entrance and exit lanes in a certain direction within the limited intersection space, thereby improving the lane utilization rate while minimizing the impact on vehicles in other directions at the intersection; (3) The present invention takes the congestion at the intersection caused by the overflow of vehicles at the exit as the starting point, and provides a new idea for solving the problem of urban traffic organization; (4) The present invention fully applies modern intelligent transportation technology to practice, forming a dynamic signal timing method that combines real-time monitoring and intelligent control. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a flow chart of an embodiment of the traffic organization and signal timing method of the present invention; Figure 2 It is a flow chart of the first embodiment of the traffic organization and signal timing system of the present invention; Figure 3 It is a flow chart of the second embodiment of the traffic organization and signal timing system of the present invention.

[0014] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0015] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0016] Reference Figure 1 The present invention provides a traffic organization and signal timing system, the traffic organization and signal timing system comprises two intersecting roads, the intersection of the two roads is correspondingly installed with a traffic light and a video monitor for use, the surface of each road is correspondingly provided with an opposite lane dividing line, and each road on the entrance side of the intersection is sequentially arranged from the opposite lane dividing line outwardly with at least one left turn guide lane, at least one straight guide lane and a non-motor vehicle lane; A video detector, a secondary signal light and a first variable lane sign are provided at the entrance of the left-turn guide lane, and a second variable lane sign is provided at the entrance of the opposite carriageway, and both the first variable lane sign and the second variable lane sign have variable markings pointing to the left-turn guide lane; When the video surveillance camera detects that the entrance to the opposite lane is overflowing with vehicles; Detecting, by means of the video detector, whether the vehicles in the left-turn guide lane have been cleared; When it is detected that the lane is clear, the first variable lane divider sign and the second variable lane divider sign are changed from a no-entry sign to a pass sign; The auxiliary signal lights and the traffic signal lights at the intersection are jointly coordinated and controlled.

[0017] In the following embodiments, the entrance lane is the lane in the direction of the user standing on the current road and facing the intersection, and the exit lane is the lane in the direction of the user entering from the remaining intersections.

[0018] The present invention aims to solve the problem that the traffic flow at the intersection cannot be dissipated in time and causes congestion due to the limited road space at the intersection and the number of lanes on the entrance road is significantly greater than the number of lanes on the exit road. The present invention provides a traffic organization and signal timing method for synchronously placing the left-turning vehicles on the opposite entrance road to wait for the turn by using the opposite entrance road. The present invention combines the increasingly mature variable lane technology, uses the left-turning lane in the opposite entrance road as the exit road, and synchronously adds a secondary signal light at the starting section of the borrowed left-turning lane, so that the left-turning vehicles in this direction are placed to wait for the turn, thereby increasing the number of lanes on the exit road to quickly dissipate the traffic flow at the intersection and improve the traffic efficiency of the intersection.

[0019] The technical solution adopted in this scheme includes the following steps: S1. Determine that the cause of the intersection congestion is that the number of lanes on the entrance road is greater than the number of lanes on the exit road; Obtain intersection traffic flow data and determine that the traffic flow in the exit lane in a certain direction is significantly greater than the traffic flow in the entrance lane, and the saturation of the exit lane is relatively high. The cause of intersection congestion is judged to be the mismatch between the number of entrance lanes and exit lanes, which causes vehicles in the exit lane to overflow to the intersection and cause congestion.

[0020] S2. Improve the supporting traffic facilities for the vehicles waiting to turn left by using the opposite entrance lane; (1) A variable signboard is set up to remind drivers to use the opposite entrance lane. The signboard consists of two parts: one is a fixed part with the text “Enter the variable lane when the green arrow light is on” to indicate that this section is a variable lane; the other is a variable part, which can be changed into a green arrow light and a red prohibition sign. When the variable lane allows traffic, the green arrow light is on, otherwise the red prohibition sign is on.

[0021] (2) Improve the markings of the variable lanes. The entrance lane is a variable lane. There are two marking matching schemes. Scheme 1 is to draw a yellow dashed solid line on the center line of the road, and a double yellow solid line on the widened gradient section. Scheme 2 is to draw double yellow dashed lines on both sides of the entrance lane, with a double yellow dashed line on the outside of the gradient section and a yellow dashed solid line on the inside.

[0022] (3) Improve the isolation guardrails at intersections. Install isolation guardrails only on both sides of the borrowed entrance lane. No guardrails are installed in the widened gradient section to ensure that the borrowed lane can still be used as a dedicated left-turn lane when not borrowing the lane.

[0023] (4) Improve the traffic lights at intersections. Install a secondary traffic light at the beginning of the entrance. The traffic light is an arrow light that only displays the left-turn arrow in green, yellow or red to indicate left-turning vehicles.

[0024] (5) Improve lane monitoring equipment at intersections and install video surveillance at intersections to monitor the length of exit queues and determine whether overflow occurs.

[0025] S3. Improve the signal timing scheme for the rear-end left-turn vehicles waiting to turn in the opposite entrance lane; Taking the example of using the south entrance lane to synchronize the opposite left-turning vehicles to wait for turning, the left-turn lane of the original entrance lane is set as the left-turn lane. The original entrance lane is used as the left-turn lane when released, and is used as the exit lane when released in other phases. The signal phase of the intersection is: Phase one: go straight and turn left at the south entrance; phase two: go straight and turn left at the north entrance; phase three: go straight at the east and west entrances; phase four: turn left at the east and west entrances.

[0026] When the video detector on the borrowed left-turn lane detects that the lane is clear, the green light of the south entrance auxiliary signal light will light up 3-5 seconds earlier than the main signal light, and the rear vehicles turning left will enter the borrowed left-turn lane. The variable lane sign above the borrowed left-turn lane will change from a green arrow light to a red prohibition sign, prohibiting vehicles from entering.

[0027] When the main signal light turns green, vehicles going straight and turning left from the south entrance follow the lane. When the green light ends, the auxiliary signal light turns yellow earlier than the main signal light, and the yellow light is set for 1-3 seconds. After the yellow light ends, the full red time is set for 3-5 seconds to ensure that the vehicles in the left-turn lane are completely cleared, and left-turning vehicles are placed behind to wait for the turn, and are prohibited from entering the left-turn lane.

[0028] When the video detector on the borrowed left-turn lane detects that the lane is clear, the green light at the north entrance comes on and the variable lane sign above the borrowed left-turn lane simultaneously changes from a red prohibition sign to a green arrow light. At this time, the borrowed left-turn lane becomes an exit lane, and straight-going vehicles and left-turning vehicles at the north entrance follow the lane. Straight-going vehicles can quickly leave the intersection through the borrowed left-turn lane.

[0029] When the through signal lights at the east-west entrance are on, vehicles going through the east-west entrance follow the lane. At this time, the variable signboard above the left-turn lane is still a green arrow light, and vehicles turning right at the west entrance can use the lane.

[0030] When the east-west left turn is released, the variable signboard above the borrowed left turn lane remains green, and left-turning vehicles at the east entrance can use the borrowed left turn lane as the exit lane and quickly leave the intersection; when the east-west left turn green light ends, a 1-3s yellow light time is set, and a 3-5s full red time is set to clear the vehicles on the borrowed left turn lane. When the east-west left turn red light is on, the south entrance auxiliary signal light turns to flashing red, and the variable signboard above the borrowed left turn lane turns red. When the south entrance auxiliary signal light turns to green, vehicles can turn left through the borrowed left turn lane.

[0031] S4. Improve the dynamic control system of intersection signal timing scheme for vehicles waiting to turn left synchronously by using the opposite entrance lane.

[0032] The exit road is equipped with a radar detector. When the queue length at the exit road is short and has not overflowed to the intersection to affect traffic, the intersection maintains the normal signal timing plan, with east-west straight and left turns placed in opposite directions, and north-south straight and left turns placed in opposite directions, and the auxiliary signal light is in a evergreen or off state; when the intersection video surveillance detects that the queue length at the exit road is long and overflows to the intersection or has a trend of overflowing to the intersection, the traffic organization signal timing plan is initiated to synchronize left-turning vehicles waiting to turn through the opposite entrance road, and the auxiliary signal light cooperates with the main signal light for coordinated control to ensure smooth traffic flow and alleviate congestion at the intersection.

[0033] The borrowed left-turn lane is equipped with a video detector. When the traffic organization signal timing plan for the rear left-turn vehicles waiting to turn in the opposite entrance lane is started, the video detector monitors the left-turn lane in real time to determine whether the lane is clear, and then controls the activation plan of the auxiliary signal light.

[0034] The present application is explained below with reference to specific embodiments.

[0035] The traffic organization plan after using the opposite entrance road is the same as Figure 2 As shown, 1 is a stop line, 2 is a non-motorized green belt, 3 is a video detector (with an electric warning pole), 4 is a right-turn lane for motor vehicles, 5 is a through lane for motor vehicles, 6 is a left-turn lane for borrowed motor vehicles, 7 is an auxiliary signal light, 8 is a variable lane sign (when vehicles are allowed to pass, the lane is a left-turn lane, when vehicles are prohibited from entering, the lane is an exit lane), 9 is a variable lane sign (when vehicles are allowed to pass, the lane is an exit lane, when vehicles are prohibited from entering, the lane is an entrance lane), 10 is an exit lane, 11 is a central isolation guardrail, 12 is a yellow dashed and solid line (when used as an exit lane, vehicles are allowed to cross the dashed line on one side), 13 is a yellow dashed line to guide vehicles to change lanes, 14 is a tidal lane stop line, a white dashed and solid line, 15 is a double yellow line, and 16 is a video surveillance system used to monitor whether the exit lane is full of vehicles.

[0036] Traffic organization scheme 2: Using the opposite entrance lane to synchronize the opposite left-turning vehicles to wait for turning Figure 3 As shown, 1 is a stop line, 2 is a non-motorized green belt, 3 is a video detector (with an electric warning pole), 4 is a right-turn lane for motor vehicles, 5 is a through lane for motor vehicles, 6 is a left-turn lane for borrowed motor vehicles, 7 is an auxiliary signal light, 8 is a variable lane sign (when vehicles are allowed to pass, the lane is a left-turn lane, when vehicles are prohibited from entering, the lane is an exit lane), 9 is a variable lane sign (when vehicles are allowed to pass, the lane is an exit lane, when vehicles are prohibited from entering, the lane is an entrance lane), 10 is an exit lane, 11 is a double yellow dashed line for a tidal lane, 12 is a central isolation guardrail, 13 is a yellow dashed and solid line (when used as an exit lane, vehicles are allowed to cross the dashed line on one side), 14 is a stop line for the tidal lane, white dashed and solid lines, and 15 is a video surveillance system used to monitor whether the exit lane is full of vehicles.

[0037] This embodiment only explains the south entrance channel. It can be understood that the four entrance channels or any one of the entrance channels can be optimized according to actual needs.

[0038] Taking the example of using the south entrance lane to synchronize the left-turning vehicles waiting to turn, the left-turn lane of the original entrance lane is set as the left-turn lane. It is used as the left-turn lane when the original entrance lane is released, and is used as the exit lane when other phases are released. The signal phases of the intersection are: Phase one, south entrance straight and left turn; Phase two, north entrance straight and left turn; Phase three, east and west entrances straight; Phase four, east and west entrances left turn.

[0039] When the video detector on the left-turn lane of the south entrance detects that the lane is clear, the green light of the south entrance auxiliary signal light will be turned on 3 seconds earlier than the main signal light. The rear vehicles turning left will enter the left-turn lane. The variable lane sign above the left-turn lane will change from a green arrow light to a red prohibition sign, prohibiting vehicles from entering.

[0040] The main signal light turns green for 25 seconds, and vehicles entering from the south going straight and turning left follow the lane. When the green light ends, the auxiliary signal light turns yellow 3 seconds earlier than the main signal light, and turns red after 3 seconds. The main signal light turns yellow for 3 seconds, and turns red after the yellow light ends. This is the clearing time, which is used to clear the vehicles in the borrowed left-turn lane. The duration of the red light is related to the length of the borrowed lane and the speed of the vehicle at the intersection.

[0041] In this embodiment, the vehicle speed at the intersection is 30-40km / h. The length of the borrowed lane in Scheme 1 is 100m, the clearing time is 9-12s, and the clearing time is set to 10s; the length of the borrowed lane in Scheme 2 is 140m, the clearing time is 12.6s-16.8s, and the clearing time is set to 15s.

[0042] The release time for the north entrance is 30s (including 3s yellow light and 1s full red light). The variable lane sign above the left-turn lane will change from a red prohibition sign to a green arrow light. At this time, the left-turn lane will become an exit lane. Through vehicles and left-turn vehicles at the north entrance will follow the lane. Through vehicles can quickly leave the intersection through the left-turn lane.

[0043] The release time for straight traffic at the east-west entrance is 25s (including 3s yellow light and 1s full red light). Vehicles going straight at the east-west entrance follow the lane. At this time, the variable signboard above the left-turn lane is still a green arrow light, and right-turning vehicles at the west entrance can use the lane.

[0044] The east-west left turn green light lasts for 25 seconds, and the variable signboard above the borrowed left turn lane remains green. Vehicles turning left at the east entrance can use the borrowed left turn lane as the exit lane and quickly leave the intersection; when the east-west left turn green light ends, a 1-3s yellow light time is set, and a 15s or 20s full red time is set (phase one) to clear the vehicles on the borrowed left turn lane. When the east-west left turn red light is on, the south entrance auxiliary signal light turns to flashing red, and the variable signboard above the borrowed left turn lane turns red. When the south entrance auxiliary signal light turns green, vehicles can turn left through the borrowed left turn lane.

[0045] S4. Improve the dynamic control system of intersection signal timing scheme for vehicles waiting to turn left synchronously by using the opposite entrance lane.

[0046] ) The intersection is equipped with a video surveillance queue detection module, such as Figure 2 As shown in Figure 16, when the queue length at the exit lane is short and has not overflowed to the intersection to affect traffic, the intersection maintains a regular signal timing plan, with east-west straight and left turns placed opposite each other, and north-south straight and left turns placed opposite each other, and the auxiliary signal light is in a permanent green or off state; when the intersection video surveillance detects that the queue length at the exit lane is long and overflows to the intersection or has a tendency to overflow to the intersection, the traffic organization signal timing plan is initiated to synchronize the left-turning vehicles waiting to turn in the opposite lane to the entrance lane, and the auxiliary signal light cooperates with the main signal light for coordinated control to ensure smooth traffic flow and alleviate congestion at the intersection.

[0047] The borrowed left-turn lane is equipped with a video detector. When the traffic organization signal timing plan for the rear left-turn vehicles waiting to turn in the opposite entrance lane is started, the video detector monitors the left-turn lane in real time to determine whether the lane is clear, and then controls the activation plan of the auxiliary signal light.

[0048] The present invention aims to solve the problem that the traffic flow at the intersection cannot be dissipated in time and causes congestion due to the limited road space at the intersection and the number of lanes on the entrance road is significantly greater than the number of lanes on the exit road. The present invention provides a traffic organization and signal timing method for synchronously placing the left-turning vehicles on the opposite entrance road to wait for the turn by using the opposite entrance road. The present invention combines the increasingly mature variable lane technology, uses the left-turning lane in the opposite entrance road as the exit road, and synchronously adds a secondary signal light at the starting section of the borrowed left-turning lane, so that the left-turning vehicles in this direction are placed to wait for the turn, thereby increasing the number of lanes on the exit road to quickly dissipate the traffic flow at the intersection and improve the traffic efficiency of the intersection.

[0049] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0050] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0051] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A traffic organization and signal timing system, characterized in that: The traffic organization and signal timing system comprises: two intersecting roads, the intersection of the two roads is correspondingly equipped with a traffic light and a video monitor for use, the surface of each road is correspondingly provided with an opposite lane dividing line, and each road on the entrance side of the intersection is sequentially arranged from the opposite lane dividing line outwardly with at least one left turn guide lane, at least one straight guide lane and a non-motor vehicle lane; A video detector, a secondary signal light and a first variable lane sign are provided at the entrance of the left-turn guide lane, and a second variable lane sign is provided at the entrance of the opposite carriageway, and both the first variable lane sign and the second variable lane sign have variable markings pointing to the left-turn guide lane; When the video surveillance camera detects that the entrance to the opposite lane is overflowing with vehicles; Detecting, by means of the video detector, whether the vehicles in the left-turn guide lane have been cleared; When it is detected that the lane is clear, the first variable lane divider sign and the second variable lane divider sign are changed from a no-entry sign to a pass sign; The auxiliary signal lights and the traffic signal lights at the intersection are jointly coordinated and controlled.

2. The traffic organization and signal timing system according to claim 1, characterized in that: The step of changing the first variable lane sign and the second variable lane sign from a prohibition sign to a passage sign when the lane is detected to be clear comprises: When the video detector on the left turn guide lane detects that the lane is clear; Turn the auxiliary signal light to red in advance, and at the same time adjust the first variable lane sign above the left-turn guide lane to the pass sign, so that the left-turn guide lane is adjusted to the opposite lane for passing.

3. The traffic organization and signal timing system according to claim 2, characterized in that: The step of changing the first variable lane sign and the second variable lane sign from a prohibition sign to a pass sign when the lane is detected to be clear comprises: The auxiliary signal light turns yellow in advance, and after the yellow light ends, it is set to full red. At this time, the first variable lane sign is adjusted to a no-entry sign to clear the vehicles in the left-turn guide lane; When the vehicles in the left-turn guide lane are cleared, the auxiliary signal light turns green and the left-turn guide lane is used normally as a left-turn lane.

4. The traffic organization and signal timing system according to claim 3, characterized in that: The steps of turning on the auxiliary signal light in advance to a red light and adjusting the first variable lane sign above the left-turn guide lane to a pass sign so that the left-turn guide lane is adjusted to the opposite lane for passing include: Adjust the second variable lane sign to a no-entry sign.

5. The traffic organization and signal timing system according to claim 1, characterized in that: When the queue of vehicles prohibited from entering the opposite lane is short and has not overflowed to the intersection to affect traffic, the intersection maintains a regular signal timing plan, with east-west straight and left turns placed in opposite directions, and north-south straight and left turns placed in opposite directions, and the auxiliary signal lights are in the permanent green or off state.

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