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Stop sign

Stop sign

A stop sign is a traffic sign designed to notify drivers that they must come to a complete stop and make sure the intersection is safely clear o…

Square

Square

A square is an open space, where a public road opens or several public roads come together, and where the location allows traffic and other acti…

Speed bump

Speed bump

A speed bump is a traffic calming device that use vertical deflection to slow motor-vehicle traffic in order to improve safety conditions. Varia…

Snow chains

Snow chains

Snow chains are devices fitted to the tires of vehicles to provide maximum traction when driving through snow and ice. Snow chains attach to the…

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…

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