Patent ID: 8797185
Filing Date: 2014-08-05
Classification: G08G

Abstract:
1. An on-board unit (OBU) with a driving-assistance function, wherein the OBU is installed on a vehicle, and the OBU comprises: at least one wireless communication unit; and a processing unit electrically connected with the at least one wireless communication unit, wherein the processing unit comprises: a traffic light information receiving module for receiving information of at least one first traffic signal and at least one second traffic signal respectively from at least one first road side unit (RSU) and at least one second RSU through the at least one wireless communication unit, wherein the at least one first traffic signal is installed at a first intersection, which is in a traveling direction of the vehicle, the at least one second traffic signal is installed at a second intersection, which is in the traveling direction, and the vehicle is closer to the first intersection than to the second intersection; a position obtaining module for obtaining vehicle position information of the vehicle; and a suggested speed generating module for generating a suggested speed range, within which the vehicle may travel to allow the same to pass through the first intersection and the second intersection without stopping, the suggested speed range being generated according to the information of the at least one first traffic signal and the at least one second traffic and the vehicle position information, wherein the processing unit further comprises: a delay calculating module for calculating a first delay time for which the at least one first traffic signal must be delayed if the vehicle is to pass through the first intersection without stopping, and calculating a second delay time for which the at least one second traffic signal must be delayed if the vehicle is to pass through the second intersection without stopping, the first delay time and the second delay time being calculated according to a present speed of the vehicle and the vehicle position information; and a signal adjusting module for generating a signal adjust request according to the first delay time and the second delay time, and transmitting the signal adjust request to the at least one first RSU and the at least one second RSU through the at least one wireless communication unit to adjust signal periods of the at least one first traffic signal and the at least one second traffic signal.