Virginia Code Title 46.2. Motor Vehicles § 46.2-1066. Brakes

Every motor vehicle when driven on a highway shall be equipped with brakes adequate to control the movements of and to stop and hold such vehicle. The brakes shall be maintained in good working order and shall conform to the provisions of this article.

Every bicycle, electric power-assisted bicycle, and moped, when operated on a highway, shall be equipped with a brake that will enable the operator to make the braked wheels skid on dry, level, clean pavement. Every electric personal assistive mobility device, when operated on a highway, shall be equipped with a system that, when activated or engaged, will enable the operator to bring the device to a controlled stop.