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Vehicle traffic system and method

  • US 5,648,904 A
  • Filed: 12/06/1995
  • Issued: 07/15/1997
  • Est. Priority Date: 04/25/1994
  • Status: Expired due to Fees
First Claim
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1. A vehicle traffic system comprising:

  • a plurality of intersecting one-way streets which form a grid, each intersection of the one-way streets being in the form of an overpass; and

    a plurality of one-way ramps, each ramp providing a path for a vehicle moving along one of the one-way streets to make a single type of turn onto another one of the one-way streets forming an overpass intersection with the one of the one-way streets, each ramp providing a path for the same type of turn as provided by all of the other ramps;

    a traffic monitoring subsystem, wherein the traffic monitoring subsystem includes;

    a first velocity sensor station mounted along a first one of the one-way streets,first processing means for processing output signals from the velocity sensor station to generate a first velocity signal indicative of an average speed of at least one vehicle translating past the velocity sensor station;

    a second velocity sensor station mounted along a second one of the one-way streets, where the second one of the one-way streets does not intersect the first one of the one-way streets;

    second processing means for processing output signals from the second velocity sensor station to generate a second velocity signal indicative of an average speed of at least one vehicle moving past the second velocity sensor station, wherein the first processing means is programmed for generating a first display signal for controlling display of a representation of the first velocity signal, and the second processing means is programmed for generating a second display signal for controlling display of a representation of the second velocity signal; and

    a display device for receiving the first display signal and the second display signal, and displaying in response the representation of the first velocity signal and the representation of the second velocity signal.

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