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1. System significance
1) Reduce the travel time of public lines and reduce the delay of public vehicle intersections;
2) Reduce the number of parking of public vehicles, improve the stability and accuracy of public vehicles, and improve the level of public transport services;
3) Reduce the delay of social vehicles on the main line and the length of the queue of vehicles;
4) Reduce vehicle energy consumption, manpower and transportation equipment;
2. System architecture and program description
Install the RFID base station type directional reader at 100-200 meters away from the intersection. When the bus approaches the intersection, the 2.4G active at the front of the buselectronic labelCorresponding to the RFID base station type directional reader installed on the roadside, the reader signal is connected with the traffic signal control system of the traffic command center, and the traffic signal light at the intersection will change: extend the green light in the direction of the dedicated lane for BRT vehicles, or red The lamp is shortened;
2.1 System architecture
System network architecture
2.2 Program description
Installation location
When the vehicle arrives at the intersection, the RFID reader reads the tag and obtains vehicle information; obtains the real-time scheduling status of the vehicle by interacting with the intelligent scheduling system, including whether it is late, whether it is express scheduling, and the full load rate, etc., and generates a request based on the real-time status of the vehicle; After that, the signal priority system submits a priority application to the traffic management department. The traffic management department system processes the request based on the original plan information and real-time scheduling information, and finally gives priority results; after the vehicle leaves the positioning area, the signal control system enters The signal state is restored until the signal state is restored, and the signal priority dispatching process is completed; the BRT signal priority control intelligent management system refers to the priority given by the traffic signal system to BRT vehicles in “time”, which is mainly reflected in: When BRT vehicles are running When approaching the intersection, the traffic signal system recognizes the vehicle and judges the direction of the vehicle, providing a priority signal for the bus. The BRT signal priority control intelligent management system mainly includes active electronic tags and base station type directional readers.Its basic working principle and characteristics areRFIDWhen the base station type directional reader detects that the BRT vehicle is approaching the intersection, it sends a request signal to the intersection signal. At the same time, the RFID base station type directional reader will identify the detected BRT vehicle and pass the information through the dedicated communication optical fiber It is transmitted to the traffic signal control system in real time, and the traffic control system center immediately issues instructions to the intersection signal machine for timing adjustment. The traffic control system of BRT vehicles adopts two solutions: (1) When the BRT vehicle approaches the intersection and encounters a green light, the current green light phase time is appropriately extended by 8 seconds to ensure that the BRT vehicle passes through the intersection smoothly; (2) When the BRT vehicle approaches the intersection When the intersection encounters a red light, shorten the red signal cycle and switch to the green light phase of the BRT vehicle driving 8 seconds in advance, thereby reducing the delay time of the BRT vehicle at the intersection;
Three, typical cases
Hangzhou BRT Line 2
Jiangsu Yancheng BRT
Foshan, Guangdong BRT
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