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Dead end

Dead end

A dead end, also known as a cul-de-sac, no through road or no exit road, is a street with only one inlet or outlet. Dead ends are created in urb…

Crosswind

Crosswind

A crosswind is any wind that has a perpendicular component to the line or direction of travel. This affects the aerodynamics of many forms of tr…

Traffic lights

Traffic lights

By means of light signals, traffic lights control the crossing of an intersection, the access to bridges, tunnels and railway crossings, the acc…

Coolant

Coolant

A coolant is a substance, typically liquid or gas, that is used to reduce or regulate the temperature of a system. An ideal coolant has high the…

Child restraints

Child restraints

A child restraint system is a seat designed specifically to protect children from injury or death during vehicle collisions. Most commonly these…

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