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Slope

Slope

A slope or grade of a road refers to the tangent of the angle of the road to the horizontal. It is a special case of the slope, where zero indic…

Runaway truck ramp

Runaway truck ramp

A runaway truck ramp is a traffic device that enables vehicles which are having braking problems to safely stop. It is typically a long, sand- o…

Handbrake

Handbrake

A handbrake or parking brake is a mechanism used to keep the vehicle securely motionless when parked. Historically, it was also used to help per…

Esp

Esp

The 'Electronic Stability Program' (esp) helps the driver to control the vehicle when it is in a critical situation. A microcomputer checks the …

Emergency hammer

Emergency hammer

An emergency hammer is a safety device used in vehicles or buildings to break through window glass in an emergency. Many are attached to a cable…

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