Method and apparatus for controlling and/or limiting speed exces

Details Method and apparatus for controlling and/or limiting speed exces Method and apparatus for controlling and/or limiting speed exces

1993-10-13

1997-08-05

Teska, Kevin J.

Boots, shoes, and leggings

364426041, 364565, 340904, 340936, 340943, 380 23, G06F 1740, G08G 10967, B60K 3100

Patent

active

056548915

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 (t.sub.1) 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 (t.sub.2) and other information (v.sub.1, d.sub.1) 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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