Method and apparatus for controlling and/or limiting speed excess by drivers
First Claim
1. Method for controlling and limiting speed excess by drivers of a moving vehicle comprising the steps of:
- placing millimeter wave transmitting means at limits of a geographical area along a road where speed control is desired to transmit at least time, distance between adjacent transmitting means and associated maximum speed limit information;
providing the vehicle with a smart-card reader with cryptographical protection and with protection that makes impossible any physical access into electronic circuitry of the reader, and in which a smart-card with driver-identification data is to be inserted during operation of the vehicle;
receiving, in the moving vehicle, at least the time (t1, t2) and distance (d1) information transmitted from the transmitting means during passage thereof by the moving vehicle;
evaluating the information received in the moving vehicle to determine a speed value from the time and distance information and, in case of a determined speed value exceeding a received speed limit value (v1), storing at least the determined speed value in a physically protected memory on that vehicle and connected to the card reader;
subsequently checking the stored speed values by an authority by inserting a control card in the card-reader to read out and then erase the respective content of the memory.
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Accused Products
Abstract
Normally, speed control is carried out by police using radar and camera. The speed of a car can also be recorded in a tachograph. According to the invention car speed is controlled and/or limited using driver-specific smart-cards and millimeter wave communications. When a car (13) enters the sector of a new transmitter (11), its card reader receives a signal telling the reader to consider the time information (t1) received from the transmitter as a starting time. When the car exits this first sector and penetrates the perimeter of a second transmitter (12), the reader receives over the air a second time information (t2) and other information (v1, d1) from which the speed is calculated and recorded within the card reader. The police can check the recorded information by inserting a special card into the reader.
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Citations
14 Claims
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1. Method for controlling and limiting speed excess by drivers of a moving vehicle comprising the steps of:
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placing millimeter wave transmitting means at limits of a geographical area along a road where speed control is desired to transmit at least time, distance between adjacent transmitting means and associated maximum speed limit information; providing the vehicle with a smart-card reader with cryptographical protection and with protection that makes impossible any physical access into electronic circuitry of the reader, and in which a smart-card with driver-identification data is to be inserted during operation of the vehicle; receiving, in the moving vehicle, at least the time (t1, t2) and distance (d1) information transmitted from the transmitting means during passage thereof by the moving vehicle; evaluating the information received in the moving vehicle to determine a speed value from the time and distance information and, in case of a determined speed value exceeding a received speed limit value (v1), storing at least the determined speed value in a physically protected memory on that vehicle and connected to the card reader; subsequently checking the stored speed values by an authority by inserting a control card in the card-reader to read out and then erase the respective content of the memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification