Provide the braking system for an adjustable pedestrians device of height. Braking system includes a brake actuator, a wheel-engagement braking element and a brake cable. Brake cable includes one flexible, inner cable. Brake cable include a flexible outer shell therethrough inner cable extend and be it is movable relative to. Inner cable has the first end for being coupled to brake actuator and is coupled to the second end of wheel engagement braking element. Braking system includes a brake cable room shape with the part of a pine of closed brake drag-line.
