Most runaway truck ramps work using a combination of gravity and friction. Usually, that translates to a steep incline coupled with layers of heavy, thick material like sand or gravel.

Car flips after driving up landscaping truck ramp: Hunting Valley Police Blotter Updated: Jun. 01, 2024, 9:48 p.m. | Published: Jun. 01, 2024, 9:30 p.m.