For amply assured security, vehicle barriers can be used in combination with electronic vehicle and driver identification systems, with the barrier as the final line of defense. A primer on electronic vehicle and driver identification is provided in this “Trends and Development” post by Nedap AVI (Automatic Vehicle Identification).
For one thing, you’ll want to know not just the identity of a vehicle, but who is at the wheel or in the car, in enough time to allow a barrier to function. Certainly in PRO Barrier’s case that might not be much time at all, but do you want possibly hostile parties that close? Access security strategy is becoming an increasingly important consideration.