Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL63461CpublicationCriticalpatent/NL63461C/xx
G08G1/00—Traffic control systems for road vehicles
G08G1/01—Detecting movement of traffic to be counted or controlled
G08G1/015—Detecting movement of traffic to be counted or controlled with provision for distinguishing between two or more types of vehicles, e.g. between motor-cars and cycles