US PATENT SUBCLASS 340 / 920
.~.~.~.~ Density determines split

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

907  DF  TRAFFIC CONTROL INDICATOR {8}
916  DF  .~ Intersection normally under local controller {5}
917  DF  .~.~ Controller responsive to traffic detectors {4}
919  DF  .~.~.~ Plural cross highways at intersection each have traffic detectors {1}
920.~.~.~.~ Density determines split {1}
921  DF  .~.~.~.~.~> Extension of time

DEFINITION

Classification: 340/920

Density determines split:

(under subclass 919) Subject matter wherein the number of vehicles detected per unit time or area determines the percentage of a complete cycle allowed for a particular indicator.

SEE OR SEARCH CLASS

377, Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,

9, for counting of vehicles, per se.

701, Data Processing: Vehicles, Navigation, and Relative Location,

118, for computation of traffic analysis with determination of traffic density.