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Class Information
Number: 340/931
Name: Communications: electrical > Traffic control indicator > Traffic control or local controller failure indicator
Description: Subject matter having means to detect failure of one of the traffic control indicators or the presence of an improper output from the local controller.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8665114 Display Mar. 4, 2014
8599042 Signal information transmitting devices and signal information transmitting methods Dec. 3, 2013
8483440 Methods and systems for verifying automatic license plate recognition results Jul. 9, 2013
8379926 Vision based real time traffic monitoring Feb. 19, 2013
8254625 Automated service measurement, monitoring and management Aug. 28, 2012
8237590 Apparatus and method for reducing failures in traffic signals Aug. 7, 2012
8188888 Method and traffic control system for controlling traffic flows including hazardous material or abnormal load transportation units May. 29, 2012
8154424 Sequenced vehicular traffic guiding system Apr. 10, 2012
8149138 Barrier gate Apr. 3, 2012
8138948 Automatically engaged traffic sign Mar. 20, 2012
8054203 Apparatus and method for determining presence of objects in a vehicle Nov. 8, 2011
8013718 Photoelectric controller for electric street lighting Sep. 6, 2011
7973676 Assembly and method for controlling road signal indicators Jul. 5, 2011
7907065 Device for activating inductive loop sensor of a traffic light control system Mar. 15, 2011
7898432 System and method for determining intersection right-of-way for vehicles Mar. 1, 2011
7889093 System for safety information Feb. 15, 2011
7813699 Transceiver redundancy in an electronic toll collection system Oct. 12, 2010
7772990 Signal monitor with programmable non-critical alarm Aug. 10, 2010
7733242 System, method and apparatus for manual control of a traffic light Jun. 8, 2010
7592927 System and method for multiplexing traffic signals and bridge collapse detection Sep. 22, 2009
7495579 Traffic light status remote sensor system Feb. 24, 2009
7432827 Device for activating inductive loop sensor of a traffic light control system Oct. 7, 2008
7378987 Traffic control malfunction management unit with per channel red enable May. 27, 2008
7369056 Photoelectric controller for electric street lighting May. 6, 2008
7333027 Power supply for LED signal Feb. 19, 2008
7274307 Traffic light violation indicator Sep. 25, 2007
7246037 Methods and apparatus for an improved signal monitor Jul. 17, 2007
7193529 Traffic signal failure notification system Mar. 20, 2007
7129856 Illuminated sign for traffic control and method for functional monitoring of such a sign Oct. 31, 2006
7123165 Apparatus and method for monitoring the output of a warning or indicator light Oct. 17, 2006
7113108 Emergency vehicle control system traffic loop preemption Sep. 26, 2006
7109886 Traffic control malfunction management unit with co-channel monitoring Sep. 19, 2006
7098807 Traffic-signaling system Aug. 29, 2006
7057529 LED traffic signal load switch Jun. 6, 2006
6956502 Traffic control sign Oct. 18, 2005
6956494 Signal lamps and apparatus Oct. 18, 2005
6583731 Fault detection for traffic light systems using electronic lighting elements Jun. 24, 2003
6570505 LED lamp with a fault-indicating impedance-changing circuit May. 27, 2003
6504485 Monitoring apparatus and control apparatus for traffic signal lights Jan. 7, 2003
6405118 System for characterizing a computer to control a wheel anti-lock device for a motor vehicle Jun. 11, 2002
6337640 Inductive loop sensor for traffic detection, and traffic monitoring apparatus and method using such a loop sensor Jan. 8, 2002
6236331 LED traffic light intensity controller May. 22, 2001
6184799 Monitoring apparatus and control apparatus for traffic signal lights Feb. 6, 2001
6144317 Traffic signal with visible indication in a direction other than direct line of sight Nov. 7, 2000
6075465 Device for validating digital message applicable in particular to rail traffic regulating systems Jun. 13, 2000
5952940 Moving-body communication device Sep. 14, 1999
5898389 Blackout backup for traffic light Apr. 27, 1999
5777893 Inductive loop diagnostic interface Jul. 7, 1998
5734116 Nema cabinet monitor tester Mar. 31, 1998
5663719 LED traffic signal light with automatic low-line voltage compensating circuit Sep. 2, 1997

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