Cooperative sensor-sharing vehicle traffic safety system
A method and system for using vehicle-to-vehicle cooperative communications for traffic collision avoidance. One vehicle detects a “situation”, such as a pedestrian within the crosswalk, where an “offending object” is in or near a roadway feature, which could result in a collision. The detecting vehicle informs a second vehicle via wireless communications, of the detecting vehicle's GPS location, the GPS location of the detected object, and the GPS location of the roadway feature, i.e., a crosswalk boundary. Additional data about the “offending object” can include its speed and heading. A receiving vehicle receives this data and takes appropriate avoidance action.
1. A method of cooperatively sharing traffic safety sensor data between vehicles for avoidance of a pedestrian-vehicle collision in a crosswalk, comprising:
using a detection sensor of a detecting vehicle to detect a pedestrian in or proximate to the crosswalk;
determining a relative position of the pedestrian in a coordinate system relative to the detecting vehicle;
using GPS equipment of the detecting vehicle to determine at least a GPS location of the detecting vehicle;
accessing data stored in memory of the detecting vehicle to determine GPS crosswalk boundary data;
using the GPS crosswalk boundary data and the GPS location of the detecting vehicle to determine a global location of the pedestrian;
defining a crosswalk path of the pedestrian;
using communications equipment of the detecting vehicle, communicating the following data to a receiving vehicle; the GPS location of the detecting vehicle, the GPS crosswalk boundary data, and the global position of the pedestrian;
repeating the communicating step for as long as the pedestrian is in the crosswalk path;
using communications equipment of the receiving vehicle to receive the data; and
using processing equipment of the receiving vehicle to evaluate the relevance of the data to collision avoidance between the receiving vehicle and the pedestrian.
2. The method of claim 1 , wherein the detection sensor is a LIDAR sensor.
3. The method of claim 1 , wherein the detection sensor is a vision sensor.
4. The method of claim 1 , wherein the communications units of the detecting vehicle and the receiving vehicle are implemented with the Dedicated Short Range Communications standard.
5. The method of claim 1 , wherein the detecting vehicle further determines and communicates the pedestrian's velocity and heading.
6. The method of claim 1 , wherein the detecting vehicle further communicates a timestamp.