Do truck ramps that run away cause harm to semis?

For a technical report, a team in Pennsylvania drove a full dump truck up a runaway truck ramp. Car and Driver reports that since they were only

 travelling 35 mph, the only parts of the vehicle that were damaged were the air tanks for the brakes and the bottom of the engine.

At greater speeds or in a less sturdy vehicle, the damage may have been far more serious. 

Removing a severely damaged vehicle from a runaway truck ramp might cost anywhere from $2,500 to $4,000.

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