A steep incline, high-resistance materials like gravel and sand, and even a cable net are all part of the route designed to prevent runaway trucks.
Many truck exit ramps are built in stages to avoid traffic congestion. The first part may consist of a very standard paved road that gradually rises in elevation.
A semi-truck carrying a low load and using just its partial brakes may be able to stop on its own on this first stretch of road.
If you managed to steer your vehicle onto a paved section of a runaway truck ramp, you could stop abruptly
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