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…
LA
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
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…
School-area
A school environment is a place near a school. Pay extra attention to children playing.
Rush-hour lane
A rush-hour lane is an extra lane on a lane of a motorway. The rush-hour lane is often at the expense of the emergency lane. The rush-hour lane …
