Traffic signal control system and method

Abstract

A traffic signal control system for controlling a traffic signal for one or a plurality of vehicles travelling on a road section, including: an under-road communications unit for providing each of said one or plurality of vehicles on the road section with location information; a vehicle communications unit, installed in or attached to said each vehicle, for determining a position of said each vehicle based on the location information to generate travel information; a road-periphery communications unit, installed in a vicinity of the road section, for receiving the travel information to generate traffic information; and a traffic signal control unit for receiving the traffic information to thereby control the traffic signal based on the traffic information. The traffic information may include traffic volume information, inter-vehicular separation time information, and group-driving preservation information.