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Tan

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…

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…

Safety

Safety

To improve the safety of the passengers and the driver, there are a number of safety systems in your vehicle. Below you will find the most impor…

Roadmarks

Roadmarks

Roadmarks are used on paved roadways to provide guidance and information to drivers and pedestrians. Uniformity of the markings is an important …

Police

Police

The police is a government agency charged with maintaining public order and security, tracking down and investigating criminal offenses, providi…

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