DinaSys DRC The DinaSys DRC is a complete level crossing control: control for four servo motors, lights on poles and trees and a 1 Watt audio amplifier before the bell. The sound is stored in a separate microprocessor and comes standard as Dutch AHOB, but other crossing sounds can be programmed on demand (self WAV sound file submission). Furthermore, it is still an output recorded for driving a motor. For example, the application of this is the crossing guard who operates the trees by hand.