In speed measurement, what does 'pace' refer to?

In speed measurement, 'pace' refers to the method of following a vehicle at a constant speed to assess its speed. This technique allows law enforcement officers to determine whether a vehicle is exceeding the speed limit by maintaining a consistent distance and speed relative to the target vehicle. The officer will typically match their speed with that of the vehicle being measured, which allows for an effective determination of the target's speed over a certain distance.

This method is particularly useful in conditions where radar or laser may not be effective or available, providing officers with a reliable method to ensure that the speed measurement remains accurate. By keeping pace with the vehicle, the officer can also account for variables in traffic conditions, making this approach an integral part of effective speed enforcement.