TRAFFIC CONTROL SYSTEM
United States Patent 3516056
US Patent References:
Telemetering system
- - 3114891
Light-responsive control system
- - 3248549
Traffic speed detection and measuring systems
- - 3381219
Telemetering system
- - 3114891
Light-responsive control system
- - 3248549
Traffic speed detection and measuring systems
- - 3381219
Inventors:
Matthews, David R.
Publication Date:
06/02/1970
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Export Citation:
Assignee:
LEAR SIEGLER INC
Primary Class:
Other Classes:
250/222.100
International Classes:
G08G1/04; G08G1/04