A trailered brake workstation mounts on the horizontal frame of a two-wheeled trailer, a pair of longitudinally-spaced transverse horizontal guide bars at an elevated position above the frame. The guide bars mount slides which are secured to the bottom of a longitudinally-disposed brake. Thus the brake, via the slides, can be shifted laterally on the horizontal guide bars between an internal or centered position it which it may be locked for hauling and storing, and a side position in which it may be locked and available for operative use. A box and a cover protect the brake in the internal or centered position from the elements. A work table may also be transported, being stored in the throat of the brake during transportation, and disposed for use on the other side of the trailer when the brake is operative.