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Slippery road

Slippery road

Road slipperiness is a condition of low skid resistance due to insufficient road friction. It is a result of snow, ice, water, loose material an…

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…

Roof rack

Roof rack

A roof rack is a set of bars secured to the roof of a car. It is used to carry bulky items such as luggage, bicycles, canoes, kayaks, skis, or v…

Road surface

Road surface

A road surface or pavement is the durable surface material laid down on an area intended to sustain vehicular or foot traffic, such as a road or…

Ring road

Ring road

A ring road is a road or a series of connected roads encircling a town, city, or country. The most common purpose of a ring road is to assist in…

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