tilt by dolly shot: asian younger female supervisor examining the work of senior car or truck mechanic - auto brake fix inventory movies & royalty-free footage A ratchet about the handbrake lever retains the brake on after it's applied. A push button disengages the ratchet and frees the lever. https://knoxyumdt.wikiparticularization.com/1722617/considerations_to_know_about_truck_brake_service