What is the purpose of escape ramps?

Answer: B — To stop runaway vehicles safely

Escape ramps are specifically designed to provide a safe stopping area for vehicles that have lost their braking ability, often due to excessive speed or mechanical failure. These ramps are typically found on steep declines where the risk of runaway vehicles is high. The design of an escape ramp facilitates slowing down by using a soft material, such as sand or gravel, or by sloping the ramp downward at an angle, which helps to bring the vehicle to a halt safely without endangering the driver or other road users. While escape ramps may seem to share traits with parking areas or guide traffic, their primary and crucial function is to act as a safety mechanism to protect everyone by stopping vehicles that can no longer control their speed. This targeted purpose is what distinguishes them from other infrastructure on roadways.