Runaway truck ramps!
See them on mountain highways.
Why not daily life?
You see these in the mountains.
The last place you want to be is between one and a runaway truck.
Until I looked them up online, I didn’t realize there were 4 major types:
Arrester bed: a gravel-filled ramp adjacent to the road that uses rolling resistance to stop the vehicle. The required length of the bed depends on the mass and speed of the vehicle, the grade of the arrester bed, and the rolling resistance provided by the gravel.
Gravity escape ramp: a long, upwardly inclined path parallel to the road. Substantial length is required. Control can be difficult for the driver; problems include rollback after the vehicle stops.
Sand pile escape ramp: a short length of loosely piled sand. Problems include sudden, forceful deceleration; sand being affected by weather conditions (moisture and freezing); and vehicles vaulting and/or overturning after contacting the sand pile.
Mechanical-arrestor escape ramp: a proprietary system of stainless-steel nets transversely spanning a paved ramp to engage and retard a runaway vehicle. Ramps of this type are typically shorter than gravity ramps, and can work even on a downhill grade. These systems tend to be costly, but may save expensive real estate in crowded areas, and prevent even more costly crashes.
The purpose of the ramp is the same regardless of design and that is that the ramp allows a moving vehicle’s kinetic energy to be dissipated gradually in a controlled and relatively harmless way, helping the operator to stop it safely without a violent crash.
Sounds like just the thing for every day life.
Maybe there is an app for that or maybe I should design one.
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