Complex sentence: VASCAR can be used brom a moving or stationary patrol vehicle, and the target vehicle may be travelling in the same direction, in front of or behind the officer, it can be approaching from the front, or even on an intersecting highway.
Split into simpler sentences: VASCAR can be used brom a moving or stationary patrol vehicle, and the target vehicle may be travelling in the same direction, in front of or behind the officer. It can be approaching from the front, or even on an intersecting highway.