×

DEVICE FOR MONITORING TRAFFIC

  • US 3,866,165 A
  • Filed: 06/27/1973
  • Issued: 02/11/1975
  • Est. Priority Date: 07/13/1972
  • Status: Expired due to Term
First Claim
Patent Images

1. In an apparatus for monitoring the traffic at a road intersection at which there is a traffic control light having a '"'"''"'"''"'"''"'"'stop'"'"''"'"''"'"''"'"' period, said apparatus including a time meter which computes the local time and having a time display means which displays the local time as computed and a camera which is actuated, by a vehicle driving into the intersection, to photograph both the intersection and the time meter display means, the improvement comprising:

  • said time meter computes the time with an accuracy of at least one-tenth of a second;

    a time display device positioned to be also photographed by said camera when a photograph is taken of said intersection and said meter; and

    memory means connected to said time meter and said time display device to transfer to said display device the local time as computed by said time meter at the beginning of said '"'"''"'"''"'"''"'"'stop'"'"''"'"''"'"''"'"' period during which the photograph was taken.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×