What Specific V2X Scenarios Is Roadside LiDAR Applied in?

The roadside unit including roadside LiDARs in V2X is an important part of the V2X system and the key to V2X technology. Its main function is to collect information such as current road conditions and traffic conditions, and transmit the information, through the communication network, to the commander center or RSU for processing and to decide that relevant information is transmitted to the vehicle-mounted terminal with corresponding information request through the network, to assist the driver to operate driving.

Different from OBU LiDAR applications, roadside LiDAR can provide “God’s perspective” perception. Limited by the installation location and the sensing range of a single LiDAR sensor, only installing a single LiDAR on any part of the car end will have sensing limitations. Installing multiple LiDARs on the roadside can achieve beyond-the-horizon perception, accelerating the safe implementation of V2X and autonomous driving. A typical example is that during autopilot making a left turn at an intersection, a bicycle goes straight in the target lane, and the bicycle is not within the range of the autopilot’s sensor.

What Specific V2X Scenarios Is Roadside LiDAR Applied in?

1. Roadside LiDAR applied in V2X test demonstration zone

Roadside LiDARs are installed in the Intelligent Connected Vehicle test demonstration area to form a wireless coverage test demonstration area. It is recommended to install vehicle LIDAR and other OBU sensors for unmanned vehicle testing to form an Internet of V2X, to obtain the position, speed, and driving operation information of the tested vehicle in an all-around way. This way can mutually confirm with the sensor information of the unmanned vehicle to improve the safety of the unmanned vehicle.

2. Roadside LiDAR applied in V2X traffic corridors

The intelligent road network pilot transformation project is built with satellite ground enhancement stations, LTE-V, 5G-V2X roadside LiDAR, and other units, to realize the intelligent interconnection among traffic road communication facilities, video monitoring facilities, traffic signals, and traffic signs and markings, to enable the entire road network to have perception ability to meet complex V2X needs. “

Roadside LiDARs and other units are installed on the roadside of specific expressways or advanced highways, to form an Internet of V2X together with intelligent connected vehicles that use the road, to provide driving assistance and real-time traffic information for connected vehicles.

3. Roadside LiDAR applied in V2X intersection

The essence of intersection control is to reasonably allocate the time and space resources of the conflict points in the intersection based on the real-time traffic conditions, to ultimately achieve the purpose of reducing the waiting time of vehicles at the intersection and improving the efficiency of the intersection.

Roadside LiDARs and other units are installed at intersections can receive information from nearby smart connected vehicles and data of the data center from the cloud, and continuously broadcast information about what happened to all connected vehicles nearby to warn them of potential safety accidents in advance and to provide further information based on the driver’s own observation of the road at the same time.

After receiving the information sent by the roadside LiDARs and other units, the intelligent connected vehicles can adjust their driving and send their own data to the roadside unit at the same time.

4. Roadside LiDAR applied in parks, airports, and ports

Auto-driving projects in closed areas such as airports, wharves, freight yards, etc., where the scene is relatively closed and the operating areas are standardized and tidy have become the main areas of unmanned driving applications.

After the V2X service system is applied to carry out informatization transformation in those closed areas. Through roadside LiDARs and other units and on-board units, the interconnection and intercommunication among vehicles and vehicles, vehicles and infrastructure, vehicles, and the cloud are realized, and the operation control of individual vehicles and the coordinated control and management of regional vehicles can be further realized. In this manner, the optimization of operating routes can effectively avoid vehicle collisions, reduce logistics costs, and improve the efficiency of freight transportation and the quality of freight services.

Once the roadside LiDARs and other units establish a connection with the OBU, the OBU sends vehicle status data including the vehicle speed and vehicle location to the roadside unit. After receiving the vehicle status information, the roadside units perform analysis and processing to realize real-time monitoring of vehicle operating parameters, and then determine the current safety level of the intersection based on the monitoring data, and pack the determination result with the current intersection dynamic information (current signal status, signal retention time, etc.) into an intersection status message or warning message, which is sent to the OBU in its communication queue in real time. The warning message is directed to the potential accident vehicles to remind them to adjust their driving behavior to avoid accidents, while the status message is released by broadcast, the non-accident vehicles can adjust their driving behaviors according to this status message.