GB2179824A - Automatic, vehicle speed reduction system - Google Patents
Automatic, vehicle speed reduction system Download PDFInfo
- Publication number
- GB2179824A GB2179824A GB08521534A GB8521534A GB2179824A GB 2179824 A GB2179824 A GB 2179824A GB 08521534 A GB08521534 A GB 08521534A GB 8521534 A GB8521534 A GB 8521534A GB 2179824 A GB2179824 A GB 2179824A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vehicle
- speed reduction
- automatic
- signal
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
- G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
- B60K31/0058—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator responsive to externally generated signalling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
- B60K31/18—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including a device to audibly, visibly, or otherwise signal the existence of unusual or unintended speed to the driver of the vehicle
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
- G08G1/096725—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information generates an automatic action on the vehicle control
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
- G08G1/096758—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where no selection takes place on the transmitted or the received information
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096775—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
An automatic, vehicle speed reduction system has a main control unit 1, which is capable of selecting transmitters 2,3,4 and 5 sited along a roadway so that they are switched on and off as required. A hand held control unit 6 is capable of switching on and off portable transmitters 7,8,9 and 10, eg carried by traffic police in the hazard zone. The transmitters 2,3,4,5,7,8,9 and 10 emit signals at predetermined frequencies and are sited so that maximum exposure of the vehicles is obtained. An in vehicle control unit 11 in conjunction with an enforced speed reduction unit 12, hazard warning lights 14, and the audio/visual warning unit 15 in the vehicle provide audible and visible warning. A controlled enforced speed reduction of the vehicle is also provided, if the audio-visual warnings are ignored by the vehicle driver. <IMAGE>
Description
SPECIFICATION
Automatic, vehicle speed reduction system
This invention relates to an automatic, vehicle speed reduction system.
Current methods employed by the road transport authorities to reduce the speed of vehicles that are approaching a hazardous section of the national road network, is by a miscellany of visual indicators.
This method of controlling traffic speed is 'hit and miss' in the main, as the success of the system depends entirely on the common sense and integrity of the drivers of the vehicles.
The cost of the failure of the system is enormous in terms of finance, and particularly the loss of life.
According to the present invention the system comprises a set of roadside/central resevation sited transmitters, as in-vehicle receiver and control unit linked to an audio-visual unit, and a speed reduction enforcement device. Also incorporated into the system is an on board road speed sensor and an ignition counter.
A master control unit is located at a central traffic control head-quarters for land line operated systems, and portable hand held control units are carried by the traffic police units and are used for the control of the temporary sited transmitters.
The system is intended for use on motorways, dual carriageways and on A and B class road networks where it is considered that high risk hazards of a permanent nature exist.
The system is designed to support, and where necessary enforce the current speed warning devices employed to inform road users of their obligations as drivers to comply with the mandatory speed restrictions in force.
Functions of the system:
First function To automatically warn drivers of vehicles that an approach is being made to a road hazard by providing In Vehicle audio-visual warning which will persist until the driver reduces speed to the predetermined safe rate.
Second function To automatically enforce the reduction of the speed of the vehicle if the required reduction does not occur voluntarily within the time allowed after receiving the audiovisual warning.
Third function To de-actuate the system on board the vehicle when the vehicle has passed through the hazard zone.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which:
Figure 1 show in block diagram form the complete system, with the master control unit and the associated hand held control unit and the transmitters for the controllers.
Figure two illustrates the relative position of each transmitter pair with respect to each other and to the hazard area.
Figure three lists the frequencies that are required to enable the system to function correctly.
The frequency range will be decided with reference to the authorities concerned with these matters.
Figure four depicts the 'in vehicle' component parts, and the interrelated voltage paths between these components, the relay contacts that complete the voltage paths and the direction the information is flowing into and from the units, in block diagram configuration.
Referring to the drawings, when the decision is made to energise the system the master control unit 1, or the hand held unit 6, Fig. 1 is switched 'on'. The control units 1 or 6, cause the transmitters 2, 3, 4, 5 or 7, 8, 9, 10 to operate and emit the signal frequencies listed in
Fig. 3, dependant on the mode ie 'actuate' or 'deactuate'. Vehicles passing through the radio waves will, through the on board system, 11, 12, 13, 14 and 15, receive an audio-visual warning to reduce speed. The warning voltages are locked into the control unit 11, until released by the 'De-actuate signal.
Speed reduction achieved: On recept of the warning the driver reduces speed to the predetermined rate. The on board speed sensor 13 confirms this action. The audio-visual warning unit 15, is disabled but remains in the 'ready state' to operate again if the vehicle speed is increased within the hazard zone.
Speed reduction not achieved: If on receipt of the warning the driver does not reduce speed within the allowed time ie between 1st and 2nd warning level, the enforced reduce speed device 12, is operated by control unit 11. This automatically brings the speed of the vehicle to the rate required and the warning unit 15, is disabled, together with the enforced speed reduction device 12. The control unit 11, remains in the 'ready state' to operate again if the speed of the vehicle increases when in the hazard zone.
Transmitters permanently sited 2, 3, 4 and 5 Fig. 1. The purpose of these transmitters is to direct the generated signal frequency from the position in which they are placed so that maximum exposure of the vehicle is achieved.
The transmitters 2, 3, 4 and 5, are required to provide function feedback to the main control room.
Transmitters, portable 7, 8, 9 and 10 Fig. 1. The purpose of these transmitters 7, 8, 9 and
10 is to generate the signal frequency and to direct those frequencies from the position in which the transmitters 7, 8, 9 and 10 are placed so that maximum exposure of the vehicles is achieved.
In multiple lane carriageways it is always possible that large vehicles will be passing smaller vehicles and therefore effectively screen them. The transmitters 2, 3, 4, 5, 7, 8, 9 and 10 are to be sited to eliminate this effect.
Transmitter physical spacing and siting Fig. 2. The 1st transmitter 2, and the 2nd transmitter 3, are mounted as a pair on the same base and are physically separated by a calculated amount.
The 3rd transmitter 4, and the the 4th transmitter 5, are mounted as a pair on the same base and are physically separated by a calculated amount.
The two pairs of transmitters 2 and 3, and 4 and 5, are positioned on the carriageway either side of the hazard, Fig. 2. The transmitters 2, 3, 4 and 5, Fig. 1 are permanently sited, and when required the portable transmitters 7, 8, 9 and 10 Fig. 1, are used.
Frequency separation and frequency designation of transmitters
To enable the system to function correctly, and two prevent mal operation of the system by outside interference, and mal-function by self induced properties, frequency separation is required.
1 A frequency band which contains two separate frequencies to enable the 'actuate mode' to function as required.
2 A frequency band which contains two separate frequencies to enable the 'Deactuate mode' to function as required.
3 The actuate and deactuate modes are to be frequency separate so that self induced malfunction does not occur.
To identify the transmitted signals and the function the notation below will be used throughout.
1 Actuate signal pair-pair 1
1st and 2nd signals are to be separated so that the 1st signal called the 'actuate trigger signal' and the second signal called the 'check signal' can be positively compared to allow the 3rd signal the 'actuate signal' to be released as a command signal to the signal amplifier.
2 Deactuate signal pair-pair 2
The 4th and 5th signals are to be separated so that the 4th signal called the 'Deactuate trigger signal' and the 5th signal called the 'check signal' can be positively compared to allow the 6th signal the 'Deactuate signal' to be released as a command signal to the signal amplifier. 3 Table of frequencies
FIG 3
Actuate pair 1st signal - trigger actuate frequency 2nd signal - trigger check frequency 3rd signal - actuate frequency, a composite frequency
of the 1st and 2nd frequencies wnich is
released as a command signal to the
signal amplifier.
De-actuate pair 4th signal - trigger de-actuate frequency 5th signal - trigger cneck frequency 6th signal - 1)e-actuate frequency, a composite
frequency of tne 4tn and 5tn frequencies wnicn is released às a command signal to
signal amplifier.
Master control unit 1. The master control unit 1, is consol mounted in an office of the traffic control division. The function of the unit is to generate the frequencies as listed in Fig. 3, dependant on the mode triggered, ie actuate or deactuate, and by selection distribute those frequencies via land lines to the selected transmitters 2, 3, 4 and 5. The master control unit 1, also houses the main power on switch, hazard area selector switches, transmitter 2, 3, 4 and 5 on/off switches, the associated indicating lights and the necesary fuses. Frequency meters and monitors are also housed in the master control unit 1.
Hand held control unit 6. This unit controls the portable transmitters 7, 8, 9 and 10, that are sited by the mobile units of the traffic control division.
The unit 6, houses the on/off switches, batteries and aerial, a transmitter 7, 8, 9 and 10, monitor meter.
Control unit 11, is mounted on a chassis in an enclosed rigid box construction which also contains: The aerial input socket, the output sockets. Detector stages, signal amplifiers, two tone audio alarm generator and an electronic timing unit. Reference and test signal generators, road speed detector, ignition on counter and self test initiator. Relays/gates, test switches, fuses and power on lights. Loudspeakers and warning lights.
Inputs into the control unit 11. 1st, 2nd, 4th and 5th signal frequencies. Road speed detector voltage. Ignition 'on' voltage to counter unit. Twelve volt supply via the ignition key, and a separate direct 12 volt supply to the counting circuits.
Outputs from the controlunit 11. 12 volt supply to the warning unit 15, the hazard lights 14, and the enforced speed reduction device 12. 1st level and 2nd level speaker voltage. Control unit 11
Internal circuitry and information voltages: 1st signal detector output to 2nd detector.
2nd signal detector output to signal amplifier as 3rd signal, the actuate command signal, as listed in Fig. 3.
4th signal detector output to 5th signal detector.
5th signal detector output to signal amplifier as 6th signal, the de-actuate command signal, as listed in Fig. 3.
Reference frequencies from the frequency generator to detector units. Test frequencies from frequency generator to detector circuits. Signal amplifier output voltages to relays/ gates.
Voltage from timing unit to amplifier of the low speed relay
RL3
3
The actuate detectors part of the control unit 11. The 1st detector receives the 1st signal which is compared with the stored reference for the correct characteristics. Once accepted the signal is passed to the the 2nd detector to alert this unit.
The 2nd detector unit part of the control unit 11. The 2nd signal detector receives the 2nd signal and compares the characteristics with the 1st signal. When the characteristics are accepted a command signal is passed to the signal amplifier as the actuate signal, listed in Fig. 3.
The de-actuate detectors part of the control unit 11. The 4th signal detector receives the 4th signal which is compared with the storeed reference for the correct characteristics. Once accepted the signal is passed to the 5th signal detector to alert this unit.
The 5th signal detector receives the 5th signal and compares the characteristics of the 4th and 5th signals. when the characteristics are accepted a command signal is passed to the signal amplifier as the deactuate signal, as listed in Fig. 3.
Signal amplifiers part of the control unit 11. These units amplify the command signals sufficiently to operate relays/gating circuits.
Two tone audio alarm generator part of the control unit 11. This stage provides the 1st and 2nd level of aggressive audio tones. The 1st level is passed to the warning unit 15, via contacts of the appropriate relay, and the 2nd, delayed level, is passed by the same method. Both levels of the audio warning are sited near to the driver.
Clock unit part of the control unit 11. Provides the required delays and timing pulses within the control unit 11.
Reference and test signal generator part of the control unit 11. Provides the reference and test frequencies required within the system.
Road speed sensor and low speed relay/ gate amplifier part of control unit 11. Samples the input from the road speed detector unit 13, and when this is equivelent to the low speed rate required, energises the low speed relay
RL3
3
Ignition 'on' counter and self test initiator part of the control unit 11, counts the number of times the ignition circuit is switched on, and when the required number 'on' counts is reached causes the self test function to be initiated.
Relays/Gates Part of the control unit 11.
The relays/gates are mounted on the same chassis as the signal detectors and signal amplifiers.
RL1 18 Fig 4
4
Normally open 'Actuate' relay. This relay is energised by the actuate command signals via the signal amplifier.
Contact RL1/1 retains relay
RL1 18, 4 in the 'on' position. Contact RL1/2 closes to prepare the 12 volt line to the hazard lights 14, audio-visual warning unit 15, and the enforced speed reduction device 12.
Contact RL1/3 closes to complete the line to the 1st level speaker in the warning unit 15.
Contact RL1/4 closes and retains the in vehicle system in the locked 'on' condition in the event of the ignition being switched off whilst the vehicle is in motion when on the road network.
RL2 19 Fig 4
1
Normally closed transient 'deactivate relay'. This relay is momentarily energised by the deactuate signal via the signal amplifier.
Contact RL2/1 opens to de-energise relay
RL1 18, 4 and by doing so disables the warning and enforcement modes.4
RL3 20 Fig 4
3
Normally closed transient 'slow speed' relay. This relay is energised by the road speed detector unit 13, via the road speed sensor amplifier, when the speed reduction rate is achieved.
Contact RL3, opens to remove the 12 volt supply from the hazard lights 14. The audio-visual warning unit 15, and the enforced speed reduction device 12.
Contact RL3/2 opens the 1st level speaker in the audio-Visual warning unit 15.
Contact RL3/3 opens the 2nd level speaker line in the audio-visual warning unit 15.
RL4 - 21 Fig 4
2
Normally open 'enforced speed reduction' relay. This relay is energised by the clock unit, when the speed reduction does not take place within the required time limit.
Contact RL4/1 retains the relay 'on'
Contact RL4/2 closes to apply the 12 volt supply to the enforced speed reduction device 12.
The in vehicle aerial 16. part of control unit 11. The aerial must be capable of passing the four signal frequencies as listed in Fig. 3, to the receiver at maximum strength. It must be placed on the vehicle to achieve maximum reception.
Speed reduction device 12 This device is attached to the vehicles accelerator linkage, so that speed reduction of the vehicle can be achieved.
Road speed detector 13 The function of this device is to indicate by voltage, to the control unit 11, the actual speed of the vehicle over the road surface.
Self test and manual test part of the control unit 11 and the audio-visual warning unit 15.
These two tests are to provide the driver with the confidence that the system is operative. The self test mode is operative after a predetermined number of ignition key on counts is achieved, this initiates the slef test circuitry, part of the control unit 11, and causes a warning light in the warning unit 15, to light and the two tone audio warning to operate. This test is self cancelling.
Manual test is achieved by operating switch 17, in warning unit 15, the warning light and the audio warning is operated and is cancelled by returning the switch 17, to the off position.
Audio-visual warning unit 15. This unit is located in an unobtrusive position in the vehicle so that it does not cause undue distraction to the driver when in the passive mode. The function of the unit is to provide a visual warning followed by an aggressive two tone audible warning. The warning modes can only be disabled by the action of the system ie deactuate mode, or by the driver reducing speed to introduce the automatic disable function. The driver can also disable the warning modes by turning the ignition key to off. To prevent this action being taken whilst the vehicle is in motion a buiit in locking on circuit is provided.
Warning characteristics Visual warning will comprise of two coloured lights operating alternately at a selected frequency. Audible warning will be two tone notes at two levels, operating at different times as dictated by the system if both are required to. The frequency of the notes will be the same as the warning lights.
External visual warning will be by the existing hazard lights fitted to the vehicle or if required additional lights for the sole purpose of external warning.
Claims (8)
1. An automatic, vehicle speed reduction system comprising a master control unit, permanently sited in a central control room, a portable hand held control unit carried by the mobile traffic units, transmitters that are permanently sited on roadways and portable transmitters that are placed temporarily in position on the roadways by the mobile traffic units, all external to the vehicles.
Fitted on the vehicles are control units and audio -visual warning units, road speed detectors and enforced speed reduction devices. An aerial is fitted on the vehicles so that the transmitted signals can be received to advantage.
2. An automatic, vehicle speed reduction system as claimed in claim 1 generates the signal frequencies at the master control unit, which are passed, by land lines or air waves, to permanently sited transmitters. Those transmitters that are portable, are self contained units, and generate and transmit identical signal frequencies that are generated by the master control unit.
3. An automatic, vehicle speed reduction system as claimed in claim 1 and claim 2 has an in vehicle control system which on reception of the transmitted signal frequencies converts the signals into audio-visual warning characteristics by means of detector circuits, signal amplifiers, relays and/or gating circuits.
4. An automatic, vehicle speed reduction system as claimed in claim 3 converts the electro/mechanical information that is generated in the vehicle, via the road speed sensor, into amplified command voltages that bring into operation the enforced speed reduction device and causes the vehicle to reduce speed.
5. An automatic, vehicle speed reduction system in claim 3 and claim 4 operates intermittently as a function of road speed, to maitain the vehicle speed at the predetermined rate when the vehicle is within the hazard zone, via voltages supplied by the road speed sensor.
6. An automatic, vehicle speed reduction system as claimed in any preceding claim converts a transmitted signal into a command signal to disable the 'in vehicle' component parts of the whole system as the vehicle leaves the hazard zone. Returning full control of the vehcle's speed to the driver.
7. An automatic, vehicle speed reduction system as claimed in all previous claims requires that all vehicles using the road network are to be fitted with the automatic, vehicle speed reduction system so that the objective can be achieved.
8. An automatic, vehicle speed reduction system substantially as described herein with reference to Figs. 1-4 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08521534A GB2179824A (en) | 1985-08-29 | 1985-08-29 | Automatic, vehicle speed reduction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08521534A GB2179824A (en) | 1985-08-29 | 1985-08-29 | Automatic, vehicle speed reduction system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8521534D0 GB8521534D0 (en) | 1985-10-02 |
| GB2179824A true GB2179824A (en) | 1987-03-11 |
Family
ID=10584444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08521534A Withdrawn GB2179824A (en) | 1985-08-29 | 1985-08-29 | Automatic, vehicle speed reduction system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2179824A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2207792A (en) * | 1987-08-06 | 1989-02-08 | Dennis Harry Wale | Vehicle driver warning apparatus |
| FR2658641A1 (en) * | 1990-02-22 | 1991-08-23 | Cathelot Daniel | Electronic speed limiter for vehicle |
| FR2672411A1 (en) * | 1991-02-01 | 1992-08-07 | Deslandes Philippe | Remote signalling system for a moving vehicle |
| FR2714756A1 (en) * | 1994-01-05 | 1995-07-07 | Rouzeau Jean Pierre | Traffic control system for road network section |
| GB2289564A (en) * | 1994-05-21 | 1995-11-22 | Ian Charles Abel | Highway user hazard warning system |
| GB2327793A (en) * | 1997-07-29 | 1999-02-03 | Harry King | Remote control of vehicle speeds |
| EP0898259A2 (en) * | 1997-08-20 | 1999-02-24 | Robert Bosch Gmbh | Traffic guiding system |
| NL1007288C2 (en) * | 1997-10-16 | 1999-04-19 | Rasenberg Johannes Theodorus Ma | Speed limitation system for road vehicle |
| GB2334352A (en) * | 1998-02-13 | 1999-08-18 | George Curtis | Remote control of vehicle speed |
| FR2792445A1 (en) * | 1999-04-16 | 2000-10-20 | Gerard Maurice Jean Chaussabel | Automatic speed limiting beacon for control of road traffic which automatically slows vehicle if it exceeds specified speed limit |
| GB2354362A (en) * | 1999-09-17 | 2001-03-21 | William Francis Beard | Vehicle speed warning system |
| WO2001037239A1 (en) * | 1999-11-15 | 2001-05-25 | Daxerer Hans Christian | System for automatically stopping a motor vehicle |
| GB2363885A (en) * | 2000-06-21 | 2002-01-09 | Robert John Pigott | Speed limit display for road vehicles |
| GB2381927A (en) * | 2001-11-07 | 2003-05-14 | Tony Ballantyne | Vehicle speed controller |
| WO2003091966A1 (en) * | 2002-04-24 | 2003-11-06 | Mohammed El Ouakifi | Remote-controlled intelligent traffic signalling |
| AU2003257865B1 (en) * | 2002-10-25 | 2004-04-08 | Yallonga Pty Ltd | Traffic speed control |
| FR2848710A1 (en) * | 2002-12-17 | 2004-06-18 | Laurent Royoux | Vehicle speed controlling system, has sensor for detecting vehicle speed, which is compared with authorized speed to warn vehicle driver and then automatically slow vehicle if vehicle speed exceeds authorized speed |
| EP1887538A1 (en) * | 2006-07-31 | 2008-02-13 | Hitachi, Ltd. | Portable roadside traffic information output apparatus and method for outputting traffic information |
| GB2441348A (en) * | 2006-08-31 | 2008-03-05 | Frank Baroukh | Adaptive speed management system |
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|---|---|---|---|---|
| GB1176639A (en) * | 1967-08-10 | 1970-01-07 | Philips Electronic Associated | Inductive Transmission System. |
| GB1355803A (en) * | 1970-12-03 | 1974-06-05 | Standard Telephones Cables Ltd | Road traffic information communication system |
| GB1360718A (en) * | 1972-10-16 | 1974-07-17 | Mullard Ltd | Highway communication system |
| GB1370909A (en) * | 1970-12-23 | 1974-10-16 | Thomson Csf | Limited radiation communication system |
| US3899671A (en) * | 1974-02-27 | 1975-08-12 | Harris A Stover | Communication systems |
| GB1431243A (en) * | 1974-03-07 | 1976-04-07 | Standard Telephones Cables Ltd | Radiating cable arrangement |
-
1985
- 1985-08-29 GB GB08521534A patent/GB2179824A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1176639A (en) * | 1967-08-10 | 1970-01-07 | Philips Electronic Associated | Inductive Transmission System. |
| GB1355803A (en) * | 1970-12-03 | 1974-06-05 | Standard Telephones Cables Ltd | Road traffic information communication system |
| GB1370909A (en) * | 1970-12-23 | 1974-10-16 | Thomson Csf | Limited radiation communication system |
| GB1360718A (en) * | 1972-10-16 | 1974-07-17 | Mullard Ltd | Highway communication system |
| US3899671A (en) * | 1974-02-27 | 1975-08-12 | Harris A Stover | Communication systems |
| GB1431243A (en) * | 1974-03-07 | 1976-04-07 | Standard Telephones Cables Ltd | Radiating cable arrangement |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2207792A (en) * | 1987-08-06 | 1989-02-08 | Dennis Harry Wale | Vehicle driver warning apparatus |
| FR2658641A1 (en) * | 1990-02-22 | 1991-08-23 | Cathelot Daniel | Electronic speed limiter for vehicle |
| FR2672411A1 (en) * | 1991-02-01 | 1992-08-07 | Deslandes Philippe | Remote signalling system for a moving vehicle |
| FR2714756A1 (en) * | 1994-01-05 | 1995-07-07 | Rouzeau Jean Pierre | Traffic control system for road network section |
| GB2289564A (en) * | 1994-05-21 | 1995-11-22 | Ian Charles Abel | Highway user hazard warning system |
| GB2327793A (en) * | 1997-07-29 | 1999-02-03 | Harry King | Remote control of vehicle speeds |
| EP0898259A2 (en) * | 1997-08-20 | 1999-02-24 | Robert Bosch Gmbh | Traffic guiding system |
| EP0898259A3 (en) * | 1997-08-20 | 2000-06-07 | Robert Bosch Gmbh | Traffic guiding system |
| NL1007288C2 (en) * | 1997-10-16 | 1999-04-19 | Rasenberg Johannes Theodorus Ma | Speed limitation system for road vehicle |
| GB2334352A (en) * | 1998-02-13 | 1999-08-18 | George Curtis | Remote control of vehicle speed |
| FR2792445A1 (en) * | 1999-04-16 | 2000-10-20 | Gerard Maurice Jean Chaussabel | Automatic speed limiting beacon for control of road traffic which automatically slows vehicle if it exceeds specified speed limit |
| GB2354362A (en) * | 1999-09-17 | 2001-03-21 | William Francis Beard | Vehicle speed warning system |
| WO2001037239A1 (en) * | 1999-11-15 | 2001-05-25 | Daxerer Hans Christian | System for automatically stopping a motor vehicle |
| GB2363885A (en) * | 2000-06-21 | 2002-01-09 | Robert John Pigott | Speed limit display for road vehicles |
| GB2381927A (en) * | 2001-11-07 | 2003-05-14 | Tony Ballantyne | Vehicle speed controller |
| WO2003091966A1 (en) * | 2002-04-24 | 2003-11-06 | Mohammed El Ouakifi | Remote-controlled intelligent traffic signalling |
| AU2003257865B1 (en) * | 2002-10-25 | 2004-04-08 | Yallonga Pty Ltd | Traffic speed control |
| FR2848710A1 (en) * | 2002-12-17 | 2004-06-18 | Laurent Royoux | Vehicle speed controlling system, has sensor for detecting vehicle speed, which is compared with authorized speed to warn vehicle driver and then automatically slow vehicle if vehicle speed exceeds authorized speed |
| EP1887538A1 (en) * | 2006-07-31 | 2008-02-13 | Hitachi, Ltd. | Portable roadside traffic information output apparatus and method for outputting traffic information |
| GB2441348A (en) * | 2006-08-31 | 2008-03-05 | Frank Baroukh | Adaptive speed management system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8521534D0 (en) | 1985-10-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |