What is the purpose of truck escape ramps?

Truck escape ramps, also known as runaway truck ramps, are safety features designed specifically to help vehicles that have lost braking power or are experiencing brake failure. The primary purpose of these ramps is to safely slow down and stop runaway trucks, reducing the risk of accidents and protecting both the vehicle and other road users.

These ramps are typically constructed with materials that provide friction and a slope that facilitates a controlled deceleration of the vehicle. By enabling trucks to safely exit the highway and come to a stop, escape ramps prevent potential collisions with other vehicles, roadside structures, or pedestrians.

While the other choices mention functions related to speed and traffic management, they do not accurately capture the primary safety role that escape ramps serve in preventing accidents and protecting both vehicles and people from harm.