Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 340/920
Name: Communications: electrical > Traffic control indicator > Intersection normally under local controller > Controller responsive to traffic detectors > Plural cross highways at intersection each have traffic detectors > Density determines split
Description: 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.

Sub-classes under this class:

Class Number Class Name Patents
340/921 Extension of time 5

Patents under this class:

Patent Number Title Of Patent Date Issued
8471728 Traffic management systems and methods of informing vehicle operators of traffic signal states Jun. 25, 2013
8253592 External adaptive control systems and methods Aug. 28, 2012
8237589 Adjusting system and method for traffic light Aug. 7, 2012
8212688 Traffic signals control system Jul. 3, 2012
7663505 Traffic management device and system Feb. 16, 2010
6587779 Traffic surveillance method and vehicle flow control in a road network Jul. 1, 2003
5646639 Display device for vehicles Jul. 8, 1997
4370718 Responsive traffic light control system and method based on conservation of aggregate momentum Jan. 25, 1983

  Recently Added Patents
Mobile terminal including stellar body watching hookup communications function
Potential separation for filling level radar
System and method of creating and providing SMS http tagging
Managing imaging of computing devices
Device, information processing method, and computer-readable storage medium
Call admission control method and system
System and method for creating a build set and bill of materials from a master source model
  Randomly Featured Patents
System for backing up vehicle use data locally on a construction vehicle
Brake drum lever for an automotive S-cam drum brake
Polynucleotides encoding stem cell growth factor-like polypeptides
Mobile communications terminal device and method for identifying incoming call for use with the same
Set top box
Sheet-supplying roller recording device
Order scheduling system and method for scheduling appointments over multiple days
System and method for rapidly calculating risk in an electronic trading exchange
System and method for termination powered differential interface periphery
Communication device and method for reducing effects of noise introduction by synchronizing data transfer to a received signal