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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 5659305 |
Backup traffic signal management system and method |
Aug. 19, 1997 |
| 5638057 |
Ground fault detection and measurement system for airfield lighting system |
Jun. 10, 1997 |
| 5610599 |
System for traffic signals for one-side passing |
Mar. 11, 1997 |
| 5606308 |
Method and system for controlling the illumination of a vehicular lamp and for monitoring the state of a switch connected thereto |
Feb. 25, 1997 |
| 5563588 |
Fiber optic traffic signal light system having a shutter control |
Oct. 8, 1996 |
| 5504481 |
Fail-safe stop light apparatus |
Apr. 2, 1996 |
| 5457450 |
LED traffic signal light with automatic low-line voltage compensating circuit |
Oct. 10, 1995 |
| 5408232 |
Traffic signal device with interchangeable lamps |
Apr. 18, 1995 |
| 5387908 |
Traffic control system |
Feb. 7, 1995 |
| 5387909 |
Lamp sensing system for traffic lights |
Feb. 7, 1995 |
| 5327123 |
Traffic control system failure monitoring |
Jul. 5, 1994 |
| 5248967 |
Method and apparatus for monitoring electrical devices |
Sep. 28, 1993 |
| 5220321 |
Method for the provision of malfunction protection for lights in decentralized traffic-light installations |
Jun. 15, 1993 |
| 5208584 |
Traffic light and back-up traffic controller |
May. 4, 1993 |
| 5185637 |
Portable traffic signal light photometer |
Feb. 9, 1993 |
| 5132682 |
Apparatus for controlling traffic lights |
Jul. 21, 1992 |
| 5073866 |
Traffic signal control system |
Dec. 17, 1991 |
| 5010336 |
Temporary traffic light control |
Apr. 23, 1991 |
| 5001475 |
Portable traffic control device |
Mar. 19, 1991 |
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