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Pacing is probably the most common method of determining speed for the purpose of traffic law enforcement. When an officer sees a vehicle moving in the same direction as his own vehicle and at an apparent excessive rate of speed, the officer matches the other car's speed so that he is neither gaining or losing ground on the suspect vehicle. The speed of the officer's vehicle is then the same as the suspect vehicle. Most officers will pace a vehicle for 1/10 mile or so to confirm the speed, but that is determined by the surroundings and the type of roadway.

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15y ago

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