An induction loop is laid in the floor and only reacts to metal objects. Pedestrians are not detected by the induction loop, but both moving and stationary vehicles are.
For this reason, the induction loop can also be used as a safety device. As the loop is aligned continuously, interference throught thermic influences, dampness or long-term changes in component data is entirely eliminated.
This guarentees maximum operational reliability and security aginst malfunction.