CN103886764A - Bus transit lane time division sharing method - Google Patents

Abstract

The invention discloses a time-sharing method for bus-only lanes. LED indicator lights are arranged at equal intervals on the dividing line between bus-only lanes and ordinary lanes; The detector and the LED indicator light are set in one-to-one correspondence, and a wide-angle panoramic camera for detecting whether there is a bus entering the bus-only entrance is set on the road edge at the intersection. The vehicle detector detects whether there is a bus passing by, and indicates that the LED indicator light changes between two working states. The wide-angle panoramic camera detects whether there is a bus entering the bus-only entrance, and determines whether the intersection signal controller adopts bus signal priority. The present invention makes full use of existing road resources, and based on the premise of bus priority, allows social vehicles to use the bus lane when the utilization rate of the bus lane is not high, realizes time-sharing sharing of the bus lane, and reduces vehicle delays.

Description

Time-sharing method for bus lanes

technical field

The invention belongs to the field of urban traffic management, and relates to a bus lane and a bus priority control method.

Background technique

In recent years, with the rapid development of my country's economic level and the acceleration of urbanization, the number of motor vehicles in major cities is also growing rapidly. Existing urban road resources cannot meet the demands of increased road traffic volume. The increase in traffic demand and the slow development of traffic infrastructure form a huge contradiction, which leads to urban traffic congestion, aggravated environmental pollution, waste of resources, and hinders urban development. Continuous development. Vigorously developing public transportation and implementing bus priority are the main ways to solve traffic congestion in big cities. Bus priority is mainly reflected in time priority and space priority. Time priority refers to the priority of setting bus signals at intersections; space priority refers to setting Bus Lane. The purpose of transportation is to realize the transfer of people and things, not the movement of vehicles. Based on this consideration, the resources of the transportation system should be rationally and optimally allocated. The original intention of bus priority is to change the unfairness in the resource allocation of the urban transportation system, reflect the economic rationality, and minimize the total delay. However, the current bus priority measures cannot realize the efficient use of road resources when the bus flow is small. Social vehicles are prohibited from entering the bus lane on the road section, resulting in a waste of road space; when there are no buses passing through the intersection, there are still buses. Signals take precedence, which wastes time and increases delays. Therefore, this technology is dedicated to overcoming the inadequacies of existing public transport priority measures and realizing the maximization of road resource utilization.

Contents of the invention

Technical problem: The present invention provides a way to make up for the shortcomings of the existing bus priority system, make full use of road resources, and allow social vehicles to enter the bus-only lane under special circumstances, so that the bus-only lane can maximize the efficiency in time and space A time-sharing method for bus-only lanes.

Technical solution: the bus-only lane time-sharing method of the present invention includes:

Set LED indicators at equal intervals on the dividing line of bus lanes and ordinary lanes to indicate whether social vehicles can enter bus lanes;

A vehicle detector is installed on the bus lane to detect whether there is a bus passing by. The vehicle detector and the LED indicator light are set in one-to-one correspondence. The LED indicator light is set in front of the corresponding vehicle detector. The distance between the two in the longitudinal direction of the road spacing

Among them, v _bus is the average running speed of the bus; a _bus is the braking deceleration of the bus; _t0 is the reaction time of the bus driver; H is the following distance of two adjacent vehicles on the same lane.

A wide-angle panoramic camera is installed on the edge of the road at the intersection to detect whether there is a bus entering the bus-only entrance. The distance between the wide-angle panoramic camera and the parking line of the bus-only entrance in the longitudinal direction of the road is $S=\frac{v_{\mathrm{the\; bus}}^2}{2\&Center\; Dot;a_{\mathrm{the\; bus}}}+v_{\mathrm{the\; bus}}\·t_0+h;$

Real-time collection of vehicle detector signals, when there is no bus detected by all the vehicle detectors in the straight section with a length greater than or equal to the length M of the control section, all LED indicators that control the section will be displayed in green, thereby allowing social vehicles Enter, otherwise all the LED indicators that control this road section are displayed in red, prohibiting social vehicles from entering, and indicating that the social vehicles that have driven on this road section leave the bus lane.

The wide-angle panoramic camera signal is collected in real time. When the wide-angle panoramic camera detects that a bus enters the bus-only entrance, it sends an instruction to the signal controller to display the bus signal priority to ensure that the bus passes the intersection first; when the wide-angle panoramic camera does not detect When the bus enters the bus-only entrance lane, and in the straight section of the control section length M closest to the intersection, when all vehicle detectors do not detect the bus, an instruction to cancel the priority of the bus signal is sent to the signal controller to allow social vehicles Enter the bus-only entrance lane to go straight and turn right.

In the method of the present invention, the distance between the LED indicator lights is 100 meters to 300 meters.

In the method of the present invention, the length M of the control road section is twice the distance between two adjacent LED indicator lights on the bus-only lane and the ordinary lane dividing line, that is, 200 meters to 600 meters.

Beneficial effect: compared with the prior art, the present invention has the following advantages:

Compared with the existing methods, the present invention simultaneously considers the time-sharing design of road sections and bus lanes at intersections, ensuring the highest utilization of road resources; using LED indicator lights, compared with traditional physical lifting isolation, the cost is low, It is safe and convenient for management and maintenance; the required facilities are all existing standard parts, and there is no need to redevelop and produce, and the method is highly implementable.

On road sections, the present invention dynamically controls the opening and closing of bus lanes through vehicle detectors and LED indicator lights, and allows social vehicles to enter bus lanes when the utilization rate of bus lanes is not high, making full use of road space. Can effectively improve the traffic capacity of the road.

At the intersection, the present invention automatically adjusts whether to use the bus signal priority through the wide-angle panoramic camera and the signal control machine. When no bus enters the intersection, the bus signal priority is cancelled, and the bus signal is turned into a traffic signal for social vehicles. Under the premise of ensuring the priority of public transportation, avoiding the loss of green light time can effectively reduce the delay of social vehicles.

Description of drawings

Figure 1a is a schematic diagram of the working state of a red light on a road section when the distance between two adjacent LED indicator lights is 100 meters.

Figure 1b is a schematic diagram of the working state of the red light on the road section when the distance between two adjacent LED indicator lights is 200 meters.

Figure 1c is a schematic diagram of the working state of the red light on the road section when the distance between two adjacent LED indicator lights is 300 meters.

Figure 2a is a schematic diagram of the working state of the green light on the road section when the distance between two adjacent LED indicator lights is 100 meters.

Figure 2b is a schematic diagram of the working state of the green light on the road section when the distance between two adjacent LED indicator lights is 200 meters.

Figure 2c is a schematic diagram of the working state of the green light on the road section when the distance between two adjacent LED indicator lights is 300 meters.

Figure 3 is a schematic diagram of the bus priority working state at the intersection.

Figure 4 is a schematic diagram of the state of canceling bus priority at an intersection.

Detailed ways

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

The bus-only lane time-sharing method of the present invention comprises: on the bus-only lane and the common lane dividing line, equidistantly setting LED indicator lights for indicating whether social vehicles can enter the bus-only lane; the LED indicator lights are embedded under the road surface, with Two working states: green light and red light, the distance between two adjacent LED indicator lights is 100 meters to 300 meters; a vehicle detector for detecting whether there is a bus passing by is installed on the bus lane, and the vehicle detector is an induction coil. The vehicle detector and the LED indicator light are set in one-to-one correspondence, and the LED indicator light is arranged in front of the corresponding vehicle detector; the distance between the two in the longitudinal direction of the road is $L=\frac{v_{\mathrm{the\; bus}}^2}{2\·a_{\mathrm{the\; bus}}}+v_{\mathrm{the\; bus}}\·t_0+h;$

Among them, v _bus is the average running speed of the bus; a _bus is the braking deceleration of the bus; the braking deceleration is the speed reduction degree of the vehicle from braking to a complete stop per unit time; t ₀ is the bus driver's response Time; according to the analysis of the driver's response characteristics: the driver's braking process includes four processes: perception, judgment, initiation of braking and braking effect; H is the following distance between two adjacent vehicles on the same lane. According to the provisions of "Traffic Engineering" and "Road Traffic Safety Law of the People's Republic of China", the present invention takes a _bus as 3m/s ² to 5m/s ² in practical application, t ₀ as 2.0 seconds to 3.0 seconds, and H as 30 meters to 50 meters.

设置用于控制公交车和社会车辆的信号控制机，控制公交车的信号有两种工作状态：采用公交信号优先和取消公交信号优先。The edge of the road at the intersection is provided with a wide-angle panoramic camera for detecting whether a bus enters the bus-only entrance, and the distance between the wide-angle panoramic camera and the parking line of the bus-only entrance in the longitudinal direction of the road is

The signal control machine used to control buses and social vehicles is set up. The signal for controlling buses has two working states: the priority of using the bus signal and the priority of canceling the bus signal.

On the road section, the vehicle detector located on the bus lane is used to detect whether there is a bus passing by, and when all the vehicle detectors in the straight section of the control section length M do not detect a bus, control all the LED lights of the section It is displayed as green, thereby allowing social vehicles to enter; otherwise, all LED indicators controlling this road section are displayed as red, prohibiting social vehicles from entering, and instructing social vehicles that have been driving on this road section to leave the bus lane. At the intersection, a wide-angle panoramic camera is installed on the road outer edge of the bus-only entrance lane S meters away from the bus-only entrance lane stop line, to detect whether a bus enters the bus-only entrance lane, and when it is detected that a bus enters, The bus signal priority is used to send to the signal controller to ensure that the bus passes through the intersection first; otherwise, the bus signal priority is cancelled, and social vehicles are allowed to borrow the bus-only entrance lane to achieve the maximum utilization of road resources.

According to the different spacing of LED indicator lights, the length M of the control section collected in real time is also different, and M is twice the spacing of two adjacent LED indicator lights. As shown in Figure 1a, the distance between two adjacent LED indicator lights is 100 meters, and the length of the control road section is 200 meters; the vehicle detector signal is collected in real time, and in the straight road section of the control length M, the detector detects that there is a bus passing by, and sends to the LED The indicator light sends a red signal to prohibit social vehicles from using the bus lane.

As shown in Figure 1b, the distance between two adjacent LED indicator lights is 200 meters, and the length of the control road section is 400 meters; the vehicle detector signal is collected in real time, and in the straight road section of the control length M, the detector detects that there is a bus passing by, and sends to the LED The indicator light sends a red signal to prohibit social vehicles from using the bus lane.

As shown in Figure 1c, the distance between two adjacent LED indicator lights is 300 meters, and the length of the control road section is 600 meters; the vehicle detector signal is collected in real time. The LED indicator light corresponding to the vehicle detector sends out a signal showing a red light. The red light indicates that public vehicles are prohibited from using the bus lane at this time, that is, the public vehicles in the bus lane should leave as soon as possible, and the public vehicles in the ordinary lane Driving in bus lanes is prohibited.

As shown in Figure 2a, the distance between two adjacent LED indicator lights is 100 meters, and the length of the control section is 200 meters; the vehicle detector signals are collected in real time, and in the straight section of the control length M, all detectors detect that there is no bus passing by , to send a green signal to the LED indicator light, allowing social vehicles to borrow the bus lane.

As shown in Figure 2b, the distance between two adjacent LED indicator lights is 200 meters, and the length of the control section is 400 meters; the vehicle detector signals are collected in real time, and in the straight section of the control length M, all detectors detect that there is no bus passing by , to send a green signal to the LED indicator light, allowing social vehicles to borrow the bus lane.

As shown in Figure 2c, the distance between two adjacent LED indicator lights is 300 meters, and the length of the control section is 600 meters; real-time collection of vehicle detector signals, in the straight section of the control section length M, all vehicle detectors have not detected the bus When the car passes by, it sends a green light signal to the LED indicator light corresponding to the vehicle detector. The green light indicates that social vehicles are allowed to borrow the bus lane, and the social vehicles in the ordinary lane can choose an appropriate opportunity to enter the bus lane.

当广角摄像头检测到有公交车经过时，向置于交叉口处的信号控制机发出启用公交信号优先的指令，公交信号优先是在信号控制交叉口给予公交车辆相对于其他车辆的优先权，这种优先不应导致相应的信号机脱离正常运行状态。公交信号优先分为三种策略，被动优先策略、主动优先策略和实时优先策略；被动优先策略主要有调整信号周期长度、重复绿灯、相位设计和针对公交运行的协调绿波的方法；主动优先策略主要有相位延长、提前激活相位、公交车辆专用相位和相位压缩等方法；实时优先策略主要有延误优化、交叉口控制和网络控制等方法。本发明在交叉口处，广角摄像头检测到有公交车经过时，根据实际道路和信号控制机的条件，可以采用上述的公交信号优先指令，充分保证公交车在交叉口处的通行能力，实现单位时间最多人数的转移。As shown in Figure 3, the road edge at the intersection is provided with a wide-angle panoramic camera for detecting whether a bus enters the bus-only entrance lane, and the distance between the wide-angle panoramic camera and the bus-only entrance lane parking line in the longitudinal direction of the road is

When the wide-angle camera detects that there is a bus passing by, it sends an instruction to the signal control machine placed at the intersection to enable bus signal priority. Bus signal priority is to give priority to bus vehicles relative to other vehicles at signal control intersections. This priority should not cause the corresponding signal to go out of normal operation. Bus signal priority is divided into three strategies, passive priority strategy, active priority strategy and real-time priority strategy; passive priority strategy mainly includes adjusting signal cycle length, repeated green light, phase design and coordinated green wave method for bus operation; active priority strategy There are mainly methods such as phase extension, early activation phase, bus-specific phase, and phase compression; real-time priority strategies mainly include delay optimization, intersection control, and network control. In the present invention, at the intersection, when the wide-angle camera detects that there is a bus passing by, according to the conditions of the actual road and the signal controller, the above-mentioned bus signal priority instruction can be used to fully ensure the traffic capacity of the bus at the intersection, and realize the unit Transfer of the maximum number of people in time.

As shown in Figure 4, the road edge at the intersection is provided with a wide-angle panoramic camera for detecting whether a bus enters the bus-only entrance lane, and the distance between the wide-angle panoramic camera and the bus-only entrance lane parking line in the longitudinal direction of the road is When the wide-angle camera does not detect the bus passing by and in the straight section of the control section length M closest to the intersection, when all the vehicle detectors do not detect the bus, send a signal to the signal controller placed at the intersection to cancel the bus signal Priority instructions, while turning the bus-only entrance into a signal to control the passage of social vehicles, allowing social vehicles to borrow the bus-only entrance to go straight and turn right.

In addition, at the intersection, right-turning social vehicles are allowed to enter the bus lane to turn right, because at the intersection, right-turning social vehicles will not form a serious conflict point with the bus, which can effectively improve the traffic at the intersection capacity and reduce delays.

It should be understood that the above examples are only used to illustrate the specific implementation of the technical solutions of the present invention, and are not intended to limit the scope of the present invention. After reading the present invention, modifications and replacements of various equivalent forms of the present invention by those skilled in the art fall within the scope of protection defined by the claims of the present application.

Claims (3)

1. A time-sharing method for bus lanes, characterized in that the method comprises: Set LED indicators at equal intervals on the dividing line of bus lanes and ordinary lanes to indicate whether social vehicles can enter bus lanes; A vehicle detector for detecting whether there is a bus passing by is arranged on the bus lane, and the vehicle detector is set in one-to-one correspondence with the LED indicator light, and the LED indicator light is arranged in front of the vehicle detector corresponding to it. spacing on

Among them, v _bus is the average running speed of the bus; a _bus is the braking deceleration of the bus; _t0 is the reaction time of the bus driver; H is the following distance of two adjacent vehicles on the same lane. The edge of the road at the intersection is provided with a wide-angle panoramic camera for detecting whether a bus enters the bus-only entrance, and the distance between the wide-angle panoramic camera and the parking line of the bus-only entrance in the longitudinal direction of the road is $S=\frac{v_{\mathrm{the\; bus}}^2}{2\·a_{\mathrm{the\; bus}}}+v_{\mathrm{the\; bus}}\·t_0+h;$ Real-time collection of vehicle detector signals, when there is no bus detected by all the vehicle detectors in the straight section with a length greater than or equal to the length M of the control section, all LED indicators that control the section will be displayed in green, thereby allowing social vehicles Enter, otherwise all the LED indicators that control this road section will be displayed in red, prohibiting social vehicles from entering, and instructing social vehicles that have already driven on this road section to leave the bus lane; The wide-angle panoramic camera signal is collected in real time. When the wide-angle panoramic camera detects that a bus enters the bus-only entrance, it sends an instruction to the signal controller to display the bus signal priority to ensure that the bus passes the intersection first; when the wide-angle panoramic camera does not detect When the bus enters the bus-only entrance lane, and in the straight section of the control section length M closest to the intersection, when all vehicle detectors do not detect the bus, an instruction to cancel the priority of the bus signal is sent to the signal controller to allow social vehicles Enter the bus-only entrance lane to go straight and turn right. 2. The time-sharing method for bus-only lanes according to claim 1, wherein the distance between two adjacent LED indicator lights on the dividing line between the bus-only lane and the common lane is 100 meters to 300 meters. 3. according to claim 1 or 2 described bus-only lane time-sharing method, it is characterized in that, described control section length M is twice of the spacing of two adjacent LED indicator lamps on the bus-only lane and the common lane dividing line, That is, 200 meters to 600 meters.

Images