04630109 is referenced by 251 patents and cites 5 patents.

A vehicle tracking system for determining the lateral position of a moving vehicle relative to an optically distinct line extending along the roadway on which the vehicle travels. A camera periodically scans the roadway including the optically distinct line thereon. Signals representing successive scans are stored then correlated to determine the lateral movement of the vehicle between scans.

Title
Vehicle tracking system
Application Number
6/706952
Publication Number
4630109
Application Date
February 28, 1985
Publication Date
December 16, 1986
Inventor
Russell R Barton
Hamilton Township, Mercer County
NJ, US
Agent
Kerkam Stowell Kondracki & Clarke
Assignee
Standard Telephones & Cables Public Company
GB
IPC
H04N 7/18
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