Patent ID: 9558666
Date: 2017-01-31
CPC Classifications: G08G

Claim:
1. A system for avoiding collisions in a traffic intersection, the traffic intersection having a plurality of sides, the system comprising: one or more radar sensors, the one or more radar sensors positioned to detect objects approaching the traffic intersection from all of the sides; a traffic-lights-and-turn-signals controller; an ambient conditions sensor capable of sensing at least an ambient temperature value and a relative humidity value for the air proximate the traffic intersection; and a central controller, which is electrically connected to the one or more radar sensors, the traffic-lights-and-turn-signals controller, and the ambient conditions sensor, and is configured to receive data from the one or more radar sensors; detect, based on the data from the one or more radar sensors, at least two objects in or approaching the traffic intersection, where each of the at least two objects is a vehicle or a vulnerable road user; receive, for each of the at least two objects, a speed and a size; determine, based on the speed and the size, whether each of the at least two objects is the vehicle or the vulnerable road user; receive data from the ambient conditions sensor, and the traffic-lights-and-turn-signals controller; determine, based on the data from the ambient conditions sensor and the speed and size of each of the at least two objects, a likelihood of a collision during a traffic signal transition; and issue a command to the traffic-lights-and-turn-signals controller to cause a delay in the traffic signal transition, while maintaining at least one predetermined traffic signal timing sequence.