Number one rule is be absolutely sure you are following the right person and the correct vehicle. Don’t start following the moment your target starts moving. Keep your distance and memorise the rear of your target’s car. Note any minor details of the car for example the shape of tail lights, etc., so you’ll have a mental picture to rely on if separated by traffic or stop lights. Memorise what your target is wearing. This is especially helpful when following on foot, on a crowded street, or at a public function.

On a foot tail through a busy street, stay on the same side of the street. In less crowded areas, walk on the opposite side of the street; keep pace with your target, at least 100 feet back. If your target speeds up, resist urge to speed up. If you find you have lost sight, let target go and pick up the tail another time. Two (or more) followers in two (or more) vehicles work (much) more effectively than a single follower in a single vehicle. Don’t go bumper to bumper. Maintain a safe distance and make sure not to run traffic lights!