Dirt is flying! Narrator: If you've driven any one of the many highways crisscrossing the world, chances are you've seen one of these: a truck escape ramp. Some escape ramps slope upwards.

But can other cars use them? Runaway truck ramps or truck escape ramps are designed to stop large vehicles that have lost control of their brakes to avoid catastrophic collisions. Depending on ...

Dirt is flying! Narrator: If you've driven any one of the many highways crisscrossing the world, chances are you've seen one of these: a truck escape ramp. Some escape ramps slope upwards.