On September 7, CCTV 13 news broadcasting studio reported that "the first pilot area of vehicle network in Wuxi, Jiangsu Province was unveiled". The scene of cooperation between vehicles and vehicles, vehicles and people, vehicles and roads, vehicles and service platforms has become a hot spot. Among them, the "active and intelligent" series of road scenarios jointly created by China Mobile, Ministry of Public Security Traffic Office, Wuxi Traffic Police, Huawei, Tian'an Zhilian, Saikang Jiaoan and other units of the strategic partners of the project team of the National Pilot Area of Vehicle Networking, are on the road of achievement promotion through demonstration application. The Wechat Public Number of China Road Traffic Safety Think Tank Committee will release scenarios and early warning system of pedestrian crossing with the authorization of Saikang Jiao'an.

1. Safety Pain Point of Pedestrian Crossing at Unlit Intersection

In order to ensure the safety of pedestrian crossing at intersections or sections without signal control, it is necessary to set up corresponding signs and markings to inform the driver of motor vehicles in advance of the pedestrian crossing area, pay attention to decelerating and stopping when necessary, which is the "comity pedestrian" currently implemented in China. Under such conditions, the guarantee of pedestrian safety still depends on the driver's active discovery. First, the driver's various psychological and physiological conditions will be negligent; secondly, it will have a certain impact on the traffic operation efficiency; thirdly, it is extremely difficult for the driver to identify the pedestrians quickly and accurately under low illumination (night), low visibility (rain and fog, etc.); fourthly, the vehicle driving near zebra crossing with sustained acceleration or over speed. Vehicles may run out of control and collide with pedestrians.

1. Introduction of Intelligent Network Pedestrian Crossing Early Warning System

System components: Huawei C-V2X RSU (Road Side Unit) dual-mode roadside unit + Saikon I2V panel display luminous sign + I2V warning facility + all-weather video image recognition device + radar speed measurement (optional) and screen display voice broadcaster (optional).

The working principle of the system

(1) When the system detects that pedestrians are about to enter or are passing the zebra crossing:

a. Event information is sent to on-board OBU (On Board Unit) equipment through RSU to realize active notification and prompt the vehicle to decelerate automatically or the driver to stop and give way actively.

b. The system control chip sends instructions to the corresponding lighting signs, LED warning piles, LED floor lights and other roadside facilities, and sends long-distance strong warning information to vehicle drivers by means of stroboscopic and discoloration. Drivers take appropriate concessions in advance.

(2) When the system detects vehicles continuously increasing (exceeding) speed heading for the zebra crossing:

The system control chip sends instructions to the screen display voice broadcaster, informs pedestrians who have not entered the zebra crossing by jumping subtitles, and informs pedestrians on the zebra crossing by voice broadcasting to avoid vehicles.

(3) The whole event information transmission process is recorded in real time on the cloud platform, and the cloud platform can also know the working status of the entire system facilities in real time.

1. Functional Advantages of Intelligent Network Pedestrian Crossing Early Warning System

(1) The integration of networking, chip, sensing, image recognition, data operation and all-weather visualization under the new generation of communication technology is stable and reliable.

(2) Automatically detect pedestrian crossing and vehicle movement, actively send risk event information, and actively take measures by pedestrians and vehicles. It overcomes the need for deceleration of vehicles when no one crosses the street under traditional conditions, the risk of uncontrolled vehicles colliding with pedestrians without knowing, and the difficulty of identification lag under low illumination, low visibility and strong vehicle lights.

(3) real time data interaction among people, vehicles, roads and environment to form a collaborative closed-loop.

(4) Compared with signal light control, it is economical, reliable, simple to construct and easy to maintain, and its traffic safety benefits and traffic efficiency have been greatly improved.