The Dragnet™ Truck Arresting System (TAS) for runaway truck ramps consists of a series of vehicle restraining devices (Energy Absorbers and Barrier Nets). The restraining devices are mounted in concrete median barriers located on each side of the escape ramp. Should an out-of-control truck enter the ramp, it will sequentially encounter the restraining devices.
 
Each absorber provides a constant restraining force throughout the allowed run-out distance. The force in the system increases until the kinetic energy is absorbed to bring the truck to a safe stop. The first net in the series is designed to stop out-of-control automobiles as well as trucks and is different from the balance of the nets used in the system.