The document describes an improved vehicle control system that uses transducers to control braking and signaling based on signals from a track magnet system. It consists of a unit with multiple transducers that operate in series from pulses generated by an induction coil or transducer passing over magnets on the track. This controls energizing a solenoid for the vehicle braking system and/or traction power supply and/or audible and visual signals. It provides automatic train control by applying brakes or reducing power when signals indicate stop, while avoiding using unreliable relays.