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