One of the most popular safety options that Trackmobile offers is the GCS Ground Control System, which facilitates ground crew operations with emergency braking capabilities. With an operating range of more than 1200 feet, the pocket-sized radio remote is used to apply brakes in an emergency. The frequency-hopping technology doesn’t require an FCC license to use and allows a groundsman to activate both machine and train-air brakes, while shifting the transmission into neutral. Also based on radio transmission is the Remote Control System, which takes the concept of the GCS a step further: in addition to controlling the brakes, the Remote Control system gives the operator the ability to control engine throttle, forward/reverse motion, machine raising and lowering, the front and rear coupler (knuckle opening, raising/lowering, and traverse) and the air horn. In essence, a user could control all essential machine functions from the ground, without ever stepping into the machine.