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…
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Speed
The speed depends on the type of road and the conditions in which you are driving. Do not drive faster than the speed limit and make sure you ca…
Spare tire
A spare tire (also called spare wheel) is an additional wheel with a tire for a motor vehicle. It is intended as a replacement for a car tire wh…
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
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…
