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
• • G—PHYSICS
  • G08—SIGNALLING
  • G08G—TRAFFIC CONTROL SYSTEMS
  • G08G1/00—Traffic control systems for road vehicles
  • G08G1/07—Controlling traffic signals
  • G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
• • 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
  • G08G1/09675—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where a selection from the received information takes place in 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
  • G08G1/096766—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

Definitions

• the invention relates to a traffic control system for regulating, guiding and / or optimizing traffic movements, a sensor being provided for recording the current traffic situation.
• Traffic control systems of the type in question are known from practice.
• a traffic light system the signal sequence of which is controlled by motor vehicles that drive over a magnetic induction loop
• the magnetic induction loop serving as a sensor.
• variable speed limit signs are known from practice, the sensor system here being able to be formed by acoustic or optical ultrasound motion detectors or infrared motion detectors or else by light barriers.
• the central traffic regulation in traffic control centers requires numerous and wide telecommunication connections between the traffic signs and a traffic control center.
• independent control of individual traffic signs at connected traffic nodes or sections of a traffic route - as is known from traffic theory - can hardly improve the traffic situation.
• the coherent traffic situation of larger traffic areas - for example in cities - has so far only been able to be significantly improved with the help of the complex control described with central traffic control centers.
• Production loops as well as motion detectors and a light barrier do not detect any further increase in the number of motor vehicles in the traffic area under consideration or in traffic jams. The same situation arises in motor vehicles in front of a traffic light system.
• the present invention is therefore based on the object of specifying a traffic control system of the type mentioned at the beginning, in which an effective control of traffic movements is possible even in the case of heavy traffic.
• the traffic control system in question is designed such that the sensor has a radio receiver and / or a receiver for optical signals and / or a receiver for acoustic signals for radio signals and / or optical signals and / or acoustic signals emitted by the road users.
• a traffic control system is not limited to the conventional types of detection.
• the sensor is then designed such that it has a radio receiver and / or a receiver for optical signals and / or a receiver for acoustic signals for radio signals and / or optical signals and / or acoustic signals which are active by the road users be sent out.
• This overcomes the limits of conventional types of detection since the detection of motor vehicles or other road users does not depend on their state of motion. Rather, it is possible with the detection principle according to the invention to reliably detect any vehicles, even if they are in front of a traffic light system or in a traffic jam, for example.
• WO 99/44185 _. _ PCT / DE98 / 02739 Of WO 99/44185 _. _ PCT / DE98 / 02739
• the spatially narrow detection area such as is present in a light barrier system, is considerably expanded.
• the detected spatial area can be predefined in a simple manner by the configuration of the receiver or the spatial receiving area.
• the traffic control system therefore specifies a traffic control system in which an effective control of traffic movements is made possible even in the case of heavy traffic.
• the senor could be assigned to a traffic sign, preferably a light signal system. This would make separate sensor carriers, for example carrier masts, superfluous in an inexpensive manner.
• road users could be assigned radio transmitters and / or optical signal transmitters and / or acoustic signal transmitters to transmit the radio signals and / or optical signals and / or acoustic signals.
• the transmitters could be assigned to motor vehicles of the road users and / or arranged on them. This would result in a connection between the transmitter and the motor vehicle, so that the transmitter is always ready for use when the respective motor vehicle is used. This means that the road user would not have to take the transmitter with him every time he uses the motor vehicle.
• the transmitter could be used as assemblies or as modules in telecommunication devices, in telemetric devices, in radio devices or other electrical devices - -
• Radio signals be integrated into, for example, cell phones.
• Known cell phones for example, transmit radio signals at regular intervals for localization by the network operator. These radio signals could be used in the context of the traffic control system according to the invention for the detection of the road user.
• the radio signals and / or optical signals and / or acoustic signals could be provided as periodic transmission pulses with predefinable transmission frequencies.
• the sensors could be assigned radio transmitters and / or optical signal transmitters and / or acoustic signal transmitters, process units with memories and switching devices.
• the recording and processing of the traffic data or the current traffic situation for the control of the traffic signs, for example several light signal systems of a traffic node, could thus take place directly on site in the respective traffic node.
• the traffic data for traffic management could be collected and processed completely decentrally by the sensors, preferably the radio receivers and / or receivers for optical signals and / or receivers for acoustic signals.
• the radio receivers and / or receivers for optical signals and / or receivers for acoustic signals could be designed to detect and preferably store the signal pulse rates and their changes and / or the reception power and their changes.
• regularly transmitted transmission impulses of the traffic participants moving past a traffic sign or standing in front of a traffic sign or moving towards a traffic sign at a distance could be registered.
• the processing could take place by an internal comparison on each traffic sign or by a comparison between interdependent traffic signs in a traffic node.
• the transmitters and receivers of traffic signs that are to be switched as a function of one another could be designed for wireless communication with one another. Processing could take place at certain time intervals or continuously.
• the respective speeds of the road users and / or their group speeds could also be taken into account in a particularly effective manner. This could be done, for example, by radio transmission, optical or acoustic transmission of the current speed value of the road user to the radio receiver and / or receiver for optical signals and / or receiver for acoustic signals from the sensor.
• the radio receivers and / or receivers for optical signals and / or receivers for acoustic signals could be designed to detect and preferably store the Doppler shift of the signal frequencies of the moving road users and thus the state of motion of the road users. This would enable the sensor to automatically determine the speed of road users. The road users would then not have to be trained to transmit their speed value by means of the radio link, optical link or acoustic link.
• predefinable groups of mutually dependent traffic signs preferably groups that can be assigned to different traffic nodes or sections of traffic routes, could be networked with one another and / or mutually influenced by the traffic flow on the traffic routes. This would make it possible to use the road users themselves to transmit data from one group of traffic signs to another group or to other groups of traffic signs. Further signal transmission devices would then not be required and the total radio traffic volume and / or optical and / or acoustic signal volume could be limited to spatially narrow areas, for example an area narrowly delimited around the group under consideration.
• the radio transmitters and / or optical signal transmitters and / or acoustic signal transmitters could be assigned radio receivers and / or receivers for optical signals and / or receivers for acoustic signals, process units with memories and switching devices.
• the radio transmitters assigned to the road users and / or traffic signs could and / or optical signal transmitters and / or acoustic signal transmitters and radio receivers and / or receivers for optical signals and / or receivers for acoustic signals can be designed as radio relays and / or optical signal relays and / or acoustic signal relays. This would allow data transmission and / or transmission of switching signals in any manner via traffic signs and road users.
• the signals of different groups of road users could preferably be different depending on the situation. It would be conceivable that, for example, public transport, based on its specific radio signals and / or optical signals and / or acoustic signals, would be classified as preferred road users and accordingly routed with preference. If the respective motor vehicles used as public transport are no longer in use, the signals could be modified accordingly, so that priority no longer has to be given to traffic management.
• the predefinable switching behavior of the traffic signs could be influenced by radio signals and / or optical signals and / or acoustic signals.
• a privilege signal is thought of, for example, by police vehicles, by fire engines or by ambulances. This would allow safe passage of such privileged vehicles at intersections, since intersecting traffic could be stopped automatically by means of the appropriately controlled traffic signs.
• the switching of the traffic signs could take place on the basis of a comparison of the recorded traffic data and / or recorded weather data.
• the control of traffic could be made dependent on individual weather situations.
• the radio receivers and / or receivers for optical signals and / or receivers for acoustic signals could be used in a particularly reliable and practical manner for the detection and preferably storage of the field attenuation of the radio signals and / or optical signals and / or acoustic signals from preferably the road users and thus the Weather- - ö -
• the density of snow, rain or fog can be determined, for example.
• the signals could be sent on the one hand by road users who take part in traffic with motor vehicles, and on the other hand by road users who are traveling by bike or even on foot. To record the weather situation, the signals do not necessarily have to come from drivers, but could also come from other road users whose signals could differ from the signals from the drivers. The recording and evaluation of the weather situation is therefore independent of the traffic volume generated by the motor vehicles.
• the switching behavior of the traffic signs could be effectively influenced by an optimization process.
• the optimization process could be a variation method of the parameters influencing the switching process.
• Traffic parameters could be considered as parameters, taking the weather situation into account.
• the traffic control system could be constructed as a neural traffic control system.
• the usual functional principles of a neural network are used here.
• the traffic control system could additionally be constructed as a navigation system for road users.
• Programmable information about geographical and / or topological properties of the traffic routes could be stored in a central manner in a memory. It would be of particular advantage that not every road user would have to carry geographical and / or topological data, which are usually stored on a compact disc.
• the memory for the information could be assigned to at least one traffic sign in a particularly simple manner. This would make it possible for a requesting road user to call up the signal within a short signal link.
• the information about traffic destinations could be stored in groups which are assigned to traffic destination directions.
• the road user could then be directed in the direction of the destination desired by him, with other possible destinations in this direction also being transmitted to him for advertising purposes. It is intended for commercial companies such as retail stores, which can be stored in the information store for a certain fee.
• the query by the road user could also be made subject to charges, so that one or both of the last-mentioned measures would make it possible to finance the operation and update of the memory. A further traffic control function would thus be implemented using the navigation system.
• the results that are available when the sensors determine the weather situation could also be made available to a road user on demand.
• the traffic control system could thus also be constructed as a weather information system. This query could also be designed for a fee.
• the network operator could charge the fees.
• an electronic device could be provided which is characterized by a radio receiver and / or receiver for optical signals and / or receiver for acoustic signals for radio signals and / or optical signals and / or acoustic signals emitted by the road users is.
• Such devices could easily be used as retrofit components for traffic signs already used.
• electronic devices could also be provided, which are characterized by a radio transmitter and / or optical signal transmitter and / or acoustic signal transmitter on the side of the road user for transmitting radio signals and / or optical signals and / or acoustic signals for the traffic control system. This would also provide an ideal retrofit option for motor vehicles.
• the radio transmitters and / or optical signal transmitters and / or acoustic signal transmitters of the road users could be integrated in a very simple manner into radio receivers or traffic telemetric devices such as GPS navigation devices or telecommunication devices. All road users could emit the same radio signals and / or optical signals and / or acoustic signals in a particularly simple manner. This affects the form of the signals and their transmission frequency. In a simple case, a pulse sequence with periodic transmission pulses could be used, which are transmitted on a single, very narrow-band transmission frequency.
• different groups of road users could, for example, according to their type, e.g. pedestrians or motor vehicles, according to the type of vehicle, e.g. passenger cars or trucks, buses and trains, or according to their task, e.g. passenger or freight traffic, private or commercial traffic, individual traffic or public traffic , Transport services, cleaning services, clearing services, police services, auxiliary services, emergency services etc., are taken into account separately.
• police or rescue services could use special operational signals to prompt traffic signs on their way to unlock the passage.
• road users When designing the radio transmitters and / or optical signal transmitters and / or acoustic signal transmitters and radio receivers and / or receivers for optical signals and / or receivers for acoustic signals as relays, road users could firstly receive information about the traffic situation from or via a traffic sign the relevant traffic route or in the section of the traffic route or in the traffic node by means of a signal. These signals could be repeated until new information is received by the road users and thus transmitted to the next traffic sign. For this purpose, the road users could send the information permanently or they could only send the information when they detect a signal receiver of a traffic sign. To this end, the signal receivers could make themselves noticeable by emitting radio signals and / or optical signals and / or acoustic signals.
• the transmitters of the traffic signs could transmit information to incoming but still distant road users, which indicates the traffic situation at the next traffic node or in the next traffic route section.
• this information could include a behavioral request to the road users, for example the best possible speed of movement. This could support the intelligent control of the traffic signs at the traffic nodes or on the sections of the traffic routes in order to thereby further optimize the traffic flow.
• the transmission powers could be set so low that only the traffic signs responsible for a traffic route section or traffic node can receive signals from the traffic participants from this section and thereby other traffic signs further away from possibly other traffic route sections or other traffic nodes which remain unaffected should not be influenced.
• the transmitting and receiving systems could be equipped with antennas for the transmission and reception of the road user signals and for the transmission of information for the road users, which can only send or record signals in or out of the traffic route in question or in or from a specific direction of the traffic route in question.
• horn antennas are particularly suitable for high signal frequencies in the microwave range.
• antennas with certain limited solid angles for transmitting or receiving can serve in particular to obtain further information about the traffic situation. If, for example, the signals of the road users are detected separately from one direction or from both directions of a traffic route, a statement can be made about the state of motion of the road users via the Doppler shift of the reception frequencies or from the splitting of the reception frequency band in question. In particular, stationary traffic or moving traffic can be recognized and the speed of movement of the road users can even be determined.
• the traffic control system according to the invention can detect traffic jam situations and can transport and distribute this information about the road users. In this way, the self-control of the traffic control system can be influenced. Furthermore, traffic monitoring, for example speed monitoring, could take place automatically at the traffic signs in question.
• the transmission frequency could be selected in such a way that the signals of the road users are subjected to a particularly high attenuation by, for example, water molecules. It must be assumed here that the transmission power of the road users' transmitters is constant and standardized. A corresponding field attenuation of the radio signals and / or optical signals and / or acoustic signals gnale then allows conclusions to be drawn about the presence of rain, fog or the risk of snow and ice.
• the field attenuation could be determined by normalizing the integrally registered received power of the transmission pulses by means of the integrally registered transmission pulse rate.
• the average transmission power of a road user after the field damping of his radiation at the receiving location could then be compared with the same theoretical quantity without field damping, which is known because of the standard transmission power of the road users.
• the field attenuation and subsequently the average rain or fog density can be determined from the comparison because of the potential-like distance dependence of the received power.
• a more precise method would include the change sizes.
• Suitable frequency ranges are, for example, ranges in which there are water absorption resonances or high scatter cross sections for the radiation. For example, this would be the 24 GHz range and higher radio frequency ranges.
• traffic control system according to the invention for traffic control in connection with traffic signs which regulate, for example, the speed of traffic or no overtaking or road closures, considerable safety advantages result from the consideration of the weather situation.
• the traffic control function could be supplemented by a navigation function for the road users.
• the memory assigned to the sensor could not only include traffic data, but also information about the traffic routes, for example directions to traffic route connections, traffic route nodes and sections of traffic routes.
• predeterminable traffic destinations could be stored, for example certain facilities along the traffic routes such as buildings, bridges, tunnels, sights, or for example commercial facilities such as shops, businesses, banks, restaurants, hotels, cinemas, petrol stations, information points, or public facilities such as eg theaters, casinos, museums, art galleries, churches, sports facilities, swimming pools, zoological gardens, schools, university institutes, parking garages, authorities, ceremonies, hospitals, spa facilities, parking facilities, police stations, military facilities, train stations, airfields and the like.
• the position of warehouse departments, storage compartments, processing lines, assembly lines, sorting devices, packaging devices, measuring and testing devices, shipping outlets or the like could be stored. This information can be accessed at any traffic sign of the traffic area under consideration.
• Every road user who wants to use the navigation aid indicates his traffic destination to his appropriately designed transmitter. This can be the name or the address of the traffic destination.
• the transmitter can then send the destination request to the traffic sign, which may have stored the traffic destinations in groups, at regular intervals or continuously or when a predetermined distance to a traffic sign has been reached.
• the predeterminable distance can be recognized by signals of the traffic sign.
• the respective groups can be assigned to the traffic directions in which the road user has to move in order to reach the desired traffic destination.
• the sender of the traffic sign Upon request, the sender of the traffic sign sends back to the recipient of the road user the directional information or movement information that the road user must follow on or after the traffic sign.
• the direction information - as described above - can take into account the local traffic situation and local traffic conditions in order to alternatively change a direction instruction, for example to avoid traffic congestion or bad weather areas and to bypass them.
• visitor traffic can be directed to its traffic destination on certain main traffic routes, whereby certain areas of the traffic area - for example residential areas - can be relieved and calmed down.
• the invention offers the great advantage for the road user that he does not have to have any geographic map material for the traffic area visited, especially since such material is often out of date after a short time because of a change in the traffic network or the traffic routing and may therefore be unusable.
• the memory of the traffic signs can be updated at any time WO 99/44185 _ 1 g _ PCT / DE98 / 02739
• the signals for the switching instructions which are sent from one traffic sign to other traffic signs can differ from the signals of the road users and from those which are intended for the road users and can be transmitted on different transmission channels and with different transmission frequencies and methods.
• the traffic control system can be equipped with a plurality of transmission channels for the switching signals and for the traffic information and the navigation information.
• the individual traffic signs and the facilities of the road users can be designed to be addressable.
• Information about the traffic situation or switching instructions or navigation information can then be addressed or transmitted in a targeted manner according to certain transmission methods, for example digitally and coded.
• a broadcasting method (“token ring” method) could be used.
• the radio transmission method could be based on the decentralized radio transmission method, which is described in German patent applications 195 35 021.9, 197 20 236.5 , 19726 956.7 and 196 08846.1.
• the functional units of the traffic signs which can be constructed from radio receivers and / or receivers for optical signals and / or receivers for acoustic signals, radio transmitters and / or optical signal transmitters and / or acoustic signal transmitters, process units with memory and switching devices, is used to switch the traffic signs certain switching behavior is programmably impressed.
• the switching behavior could be predetermined so that it meets certain optimization requirements.
• the switching behavior or the switching parameters such as the switching times, the switching frequency, the switching times, etc. could or could be set so that the swelling or decay, i.e. for example the change in the transmission pulse rate and the absolute strength of the transmission pulse rate, which the Emp - is received, minimized as much as possible. This would correspond to a flow of traffic that is as fluid as possible.
• each individual functional unit could align its switching behavior with traffic information that is transmitted to all dependent functional units.
• all functional units would have the same information for decision-making and a competing switching behavior for the individual traffic signs could be prevented, which would lead to an unstable behavior of the traffic control and traffic flow.
• each functional unit finds the most favorable setting itself in a "try and error” process by varying the switching parameters and tests it in an action-related manner.
• each functional unit can vary all switching parameters Varying the switching parameters by the individual functional units of the traffic signs, for example a traffic junction, could be carried out using a predeterminable method, in which only so many and certain functional units would vary the switching parameters simultaneously or successively that the optimization would be carried out as efficiently as possible Exchange radio information and / or optical information and / or acoustic information.
• These settings of the switching parameters could be roughly specified by settings which the functional unit has already used in similar traffic situations and which has been remembered. For this purpose, such data about the traffic situation and the switching parameter settings applied to it must be saved.
• the functional units of the traffic signs or the group of traffic signs, for example a traffic junction, in which a mutual connection takes place, are therefore capable of learning.
• a functional unit of a traffic sign decides to switch over after the logical process, then it sends switching instructions to certain dependent traffic signs on the channels and intended for this purpose switches itself at the same time.
• the dependent traffic signs are then switched over at the same time.
• Each traffic sign has the option of switching over all other dependent traffic signs, for example of the traffic node. As described above, the switchover is carried out after an optimization process with an optimization basis that is the same for all functional units.
• the functional unit groups of the different traffic nodes and the different traffic route sections together form a neural switching network.
• the functional unit groups of a traffic node or a traffic route section form neural switches (neurons) which are networked by the traffic rule itself and are stimulated by the connected traffic volume or the traffic flow. It can be expected from theoretical investigations that this neural traffic control system system independently optimizes the entire traffic flow in its area.
• the invention can optimize the traffic situation or the traffic flow in large traffic areas by itself without external traffic management and solve large, interrelated traffic problems.
• traffic control systems with preferably combined navigation and weather warning systems can be provided much more cost-effectively in terms of basic installation and operation than has been possible hitherto, since no central traffic control devices with controlling large computers and the necessary operating personnel are required. Furthermore, no separate telecommunications network is required to connect to the traffic sensors and traffic signs in traffic routes.
• Existing traffic signs can be converted with the invention into components of an intelligent traffic control system, and the required sensors can be equipped with very inexpensive receivers.
• the existing traffic signs can thus be upgraded and do not have to be replaced.
• expensive cable connections in the lanes between the dependent traffic signs, for example a traffic junction can be avoided.
• the traffic control system according to the invention can be used to implement a very cost-effective navigation system which does not require any route measuring devices on the side of the road user, satellite-supported position measuring devices, visualization components, complex processor and storage units and geographical map material in, for example, electronic storage media, as a result of which the associated costs can be avoided.
• the traffic control system has resulted in a considerably more flexible traffic control system than previously used traffic control systems. It can react flexibly to different traffic conditions and traffic situations at different traffic times and to weather conditions automatically and self-regulating. Furthermore, it can react locally to the requirements of individual road user groups in general or in certain situations. In particular, it can, for example, integrate pedestrian traffic - preferably via cell phones - into cities and direct visitor traffic to its destinations. It also increases the safety of road users in certain exceptional situations, such as in special emergency traffic or in bad weather situations. Such conditions cannot be recognized and regulated flexibly enough by previous traffic control systems.
• the invention can be used to implement an integrated weather warning system and an integrated navigation system which can be used via telecommunication devices such as, for example, mobile telephones and is thus also available to pedestrians in addition to road users such as drivers.
• the system is networked in a particularly simple manner by the moving traffic itself, which can even serve as a carrier for further traffic information. This avoids networking via telecommunication devices.
• sensors with radio receivers and / or receivers for optical signals and / or receivers for acoustic signals could firstly determine the average speed and / or the traffic volume and / or the weather situation on a road in one direction determine. If a traffic jam situation or another unfavorable traffic condition develops at this measuring point, the information about this could be transmitted by the radio receivers and / or receivers for optical signals and / or receivers for acoustic signals from the sensors by radio signals and / or optical signals and / or acoustic signals the oncoming traffic in the opposite direction, ie in the direction from which the traffic originally viewed comes.
• Functional units of the oncoming traffic participants would serve as moving relay stations, which preferably have only a short transmission and reception range, but could also transmit the information over long transmission distances due to their movement and a possibly repeated transmission of the information.
• Radio receivers and / or receivers for optical signals and / or receivers for acoustic signals of, for example, traffic signs which are arranged in an area previously traveled by the traffic in question before the traffic jam situation or the other unfavorable traffic condition, could thus transmit the information about the traffic jam situation or record the unfavorable traffic conditions and, for example, reduce the speed limit value on the traffic signs - in front of the traffic jam area - or effect a traffic diversion. This would help to clear the traffic jam or to circumvent the unfavorable traffic conditions and make the traffic flow more fluid.
• the group speed of the traffic flowing in one direction could be determined.
• the road users of the traffic originally considered could themselves be the recipients of the information transmitted by oncoming traffic about the traffic jam situation or the unfavorable traffic condition.
• the information therefore does not have to be transmitted to road users via traffic signs, but can be received directly by a road user functional unit, for example arranged in the motor vehicle.
• This functional unit can now become a road user prompt the appropriate reaction - for example, reducing the speed or changing the direction of travel - and / or trigger such a reaction automatically.
• the automatic process could include an intervention in the brake system, in a cruise control system and / or in the accelerator pedal position or could be taken into account within a guidance process of a navigation system.
• the traffic control system provides an alternative, very effective and highly flexible traffic control system for improving the traffic situation in traffic areas, in which all traffic-relevant parameters are taken into account.
• the high outlay for setting up conventional traffic control systems with traffic control centers and telecommunication connection networks is avoided.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Life Sciences & Earth Sciences (AREA)
• Atmospheric Sciences (AREA)
• Traffic Control Systems (AREA)
• Circuits Of Receivers In General (AREA)
• Alarm Systems (AREA)

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Citations (2)

• 1998
  • 1998-09-16 DE DE19882277T patent/DE19882277D2/de not_active Expired - Fee Related
  • 1998-09-16 JP JP2000533863A patent/JP3795752B2/ja not_active Expired - Fee Related
  • 1998-09-16 WO PCT/DE1998/002739 patent/WO1999044185A1/de active IP Right Grant
  • 1998-09-16 AU AU11424/99A patent/AU1142499A/en not_active Abandoned
  • 1998-09-16 AT AT98954177T patent/ATE215251T1/de not_active IP Right Cessation
  • 1998-09-16 EP EP98954177A patent/EP1057157B1/de not_active Expired - Lifetime

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