Home WORLD Trucks Without Brakes Runaway Truck Ramp Traffic Device

Trucks Without Brakes Runaway Truck Ramp Traffic Device


A runaway truck ramp is a traffic device that enables vehicles which are having braking problems to safely stop. It is typically a long, sand- or gravel-filled lane connected to a steep downhill grade section of a main road, and is designed to accommodate large trucks or buses.

source/image(PrtSc): Engineering and architecture

The ramp allows a moving vehicle’s kinetic energy to be dissipated gradually in a controlled and relatively harmless way, helping the operator to stop it safely without a violent crash.

Emergency escape ramps are usually located in mountainous areas which cause high construction costs and present difficult site selection.A ramp may cost US$1 million.Designs include:Arrester bed,Gravity escape ramp,Sand pile escape ramp,Mechanical-arrestor escape ramp.


Long descending grades can allow high vehicle speeds to be reached, and truck brakes can overheat and fail through extensive use. The ramps are often built before a critical change in the radius of curvature of the road, or before a place that may require the vehicle to stop, such as before an intersection in a populated area.The placement criteria can vary from one region/country to another.

VIA Engineering and architecture
Previous article3D Animation Electric Cars Working Principle
Next articleFolding Staircase For Space Saving Living