Patents
Patents for G08G 1 - Traffic control systems for road vehicles (61,183)
06/1980
06/10/1980US4207468 Object identification system
05/1980
05/20/1980US4204189 System for long distance transmission of signals in both directions
05/20/1980CA1078047A1 Microwave reflective transponders
05/13/1980CA1077592A1 Vehicle location system
05/06/1980US4201908 Measurement and recording apparatus and system
04/1980
04/29/1980US4200904 Solar powered street lighting system
04/29/1980US4200860 Method and apparatus for signalling motorists and pedestrians when the direction of traffic will change
04/22/1980CA1076228A1 Digital traffic coordinator
04/01/1980US4196418 Detection plate for an identification system
04/01/1980US4196412 Driver alert system
02/1980
02/26/1980US4190819 Motor vehicle audio information system
02/12/1980US4187632 Remote controlled image display device
02/06/1980EP0007579A1 Circuit arrangement for monitoring the state of signalling systems, especially traffic light signalling systems
01/1980
01/23/1980EP0007026A1 Light signal device with flash-lamps for use in a road traffic emergency-call system
01/23/1980EP0007023A1 Emergency-call stations for traffic roads using light signal devices
01/23/1980EP0007022A1 Light signal arrangement to be used in an emergency-call system for traffic roads
01/22/1980US4185265 Vehicular magnetic coded signalling apparatus
01/08/1980US4182989 System for establishing a communication link between a ground station and each of vehicle drivers within a limited communication area
01/08/1980CA1069606A1 Foreground subject-identifying apparatus
11/1979
11/28/1979EP0005534A1 Device for identifying objects and persons
11/28/1979EP0005532A1 Apparatus mounted on a vehicle for recording of accidents
11/27/1979CA1067053A1 Adjustable fitting for rigid attachment of traffic signals to mounting members
10/1979
10/31/1979EP0004969A1 Device for automatically monitoring the state of charge of line-independent current sources
10/31/1979EP0004892A2 Method and device for detecting the presence of vehicles over a measuring device disposed in the road
10/30/1979US4173010 Traffic sign and improved system for recording vehicle speed
10/17/1979EP0004706A2 Wire-guidance system
10/02/1979CA1063693A1 Traffic error correcting circuit for traffic dispatching system
09/1979
09/25/1979US4168760 Wire-guidance apparatus
09/19/1979EP0004088A2 Route guidance system for motor vehicles
09/18/1979CA1062676A1 Traffic light lens
09/11/1979US4167785 Traffic coordinator for arterial traffic system
09/11/1979US4167784 Average-mode traffic control system
09/04/1979US4167001 Stepping switch controlled traffic signal devices
09/04/1979US4166514 Devices for controlling a speed restriction for vehicles, particularly motor vehicles
08/1979
08/28/1979CA1061430A1 Transit zone monitor circuit
08/14/1979CA1060408A1 Adjustable traffic signal mounting assembly
08/07/1979CA1060113A1 Monitoring system for vehicles
07/1979
07/24/1979US4162477 Remote control system for traffic signal control system
07/17/1979CA1058728A1 Object identification system
07/10/1979CA1058298A1 Station bus position monitor
07/03/1979CA1057834A1 Vehicle sensing apparatus
06/1979
06/27/1979EP0002537A2 Device for the non-falsifiable marking of objects
06/27/1979EP0002504A1 Signal supervision circuit in light-signalling devices
06/27/1979EP0002470A1 Vehicle controlled traffic signalling device
06/27/1979EP0002469A1 Vehicle identification device
06/19/1979US4158841 Method and apparatus for the control of the safety distance of a vehicle relative to preceding vehicles
06/19/1979US4158832 Seismic apparatus for discrimination between track-type vehicles and wheel-type vehicles
06/12/1979US4158190 Wailing siren detecting circuit
05/1979
05/08/1979CA1054229A1 Listening control apparatus in a receiver
05/01/1979US4152693 Vehicle locator system
04/1979
04/24/1979CA1053390A1 System for displaying information for passengers on-board transit vehicles
04/18/1979EP0001416A1 Electronic attending system for a covered parking space
04/10/1979US4148456 Adjustable articulated pole mount assembly
03/1979
03/27/1979US4146891 Vehicle collision preventing apparatus
03/20/1979US4145605 Vehicle position indicator
03/13/1979CA1050628A1 Inductive loop detector system
03/13/1979CA1050616A1 Inductive carrier communication systems
02/1979
02/27/1979US4142173 Mounting bracket assembly for traffic signals and pedestrian signal units
02/06/1979CA1048121A1 Automatic vehicle monitoring system
01/1979
01/30/1979CA1047623A1 Inductive loop vehicle detector
01/16/1979US4135145 Error detecting circuit for a traffic control system
01/16/1979US4135144 Traffic light radio control system
01/09/1979US4133140 Safety mechanism for highway exit ramp
12/1978
12/26/1978US4131848 Digital loop detector with automatic tuning
11/1978
11/28/1978CA1043450A1 Dispatching system circuit
11/07/1978US4124897 Compensation system for a magnetic compass
10/1978
10/31/1978CA1041638A1 Vehicle identification system
10/31/1978CA1041631A1 Arrangement for measuring the distance between two successive objects
10/17/1978US4121102 Object identification system
09/1978
09/26/1978US4117450 Device for automatic signalling of an automotive vehicle damaged by collision
09/26/1978US4117404 System of communications to alert police personnel of trouble on expressways
08/1978
08/29/1978CA1037585A1 Vehicle control
08/15/1978US4107689 System for automatic vehicle location
08/15/1978CA1036689A1 Device for the determination of a circulating vehicle's category according to grouping into pre-established categories
07/1978
07/18/1978US4101191 Mounting bracket assembly for pedestrian traffic signal
07/11/1978US4100529 Road hazard warning system, indicating specific hazard
07/11/1978US4099591 Vehicle control scanning system
06/1978
06/27/1978US4097808 Entertainment system and method
06/06/1978US4093161 Control system with improved communication for centralized control of vehicles
05/1978
05/30/1978US4092718 Computerized dispatching system
05/02/1978US4087753 Communication apparatus for communicating between a first and a second object
04/1978
04/25/1978US4086538 Gated pulse generator
04/18/1978US4085434 Traffic control system
04/18/1978CA1029829A1 Anti-collision device for moving vehicles
04/04/1978US4083008 Method and circuit for generation of digitally frequency-shiftable electric signals
04/04/1978US4083003 Vehicle location system
03/1978
03/14/1978US4079322 Automatic vehicle monitoring system
02/1978
02/21/1978US4075563 Digital loop detector with improved detection control
02/21/1978US4075553 Electromagnetic detector responsive to a modification of radiated field by an intruding metallic object
01/1978
01/24/1978US4070584 Object-identification system with sequentially activated photocell array
01/24/1978US4070560 Transit zone monitor circuit
01/24/1978US4069888 Traffic system, especially public local passenger traffic system
01/17/1978US4069472 Foreground subject-identifying apparatus
01/10/1978US4068232 Passive encoding microwave transponder
01/10/1978US4068211 Vehicle identification system having error detection means
12/1977
12/13/1977US4063237 Distance measuring system, particularly for spacing of moving vehicles
12/06/1977US4061903 Digital coordinator with smooth transition for offset changes
12/06/1977US4061902 Digital traffic coordinator
11/1977
11/22/1977US4059821 Traffic signal controller flasher for pedestrian clearance
10/1977
10/11/1977US4053887 Doppler radar system