The braking trolley is a safety device designed to stop transport sets and their parts (carrying trolleys, lifting equipment, etc.) in emergencies that involve spontaneous travel on the monorail track. When the pre-set transport speed is exceeded, the braking trolley brakes by the brake shoes clamping down on the track profile. The braking trolleys are connected to transport sets by connecting rods and are placed in front of the transport set in the downhill direction. The number of mechanically and hydraulically interconnected braking trolleys is determined by the operator based on transport set weight and track inclination. Braking trolleys are usually delivered interconnected as a single, duo or trio.