What is the purpose of escape ramps?

Escape ramps are specifically designed to stop runaway vehicles that have lost their braking ability, typically on steep descents. They are crucial safety features on highways, especially in mountainous or hilly regions where large trucks might experience brake failure due to overheating. The ramps usually consist of a long, inclined path of loose gravel or sand that allows the vehicle to decelerate safely without causing harm to the driver or others on the road.

Utilizing escape ramps effectively can prevent potentially catastrophic accidents by providing a safe environment for vehicles that cannot maintain control. The design and positioning of these ramps are strategically planned to maximize visibility to approaching drivers, ensuring they can be accessed in an emergency situation.

Other choices, while they represent important aspects of roadway safety and infrastructure, do not pertain to the primary function of escape ramps. For example, changing lanes is a normal driving maneuver, direction signage guides drivers for navigation, and rest areas provide needed breaks for drivers. However, none of these roles align with the lifesaving purpose of escape ramps in handling runaway vehicles.