Definition of Speed: a) 1: the act or state of moving swiftly : SWIFTNESS 2: rate of motion: as (1) : VELOCITY 1 (2) : the magnitude of a velocity irrespective of direction c : IMPETUS b) swiftness or rate of performance or action : VELOCITY.
All LTI laser speed devices give you the ability to instantly determine a vehicle's speed, both approaching and departing. Our lasers also measure the distance value at the same time, which gives you even more evidence in validating your visual determination.