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…
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Give way
A yield or give way sign indicates that merging drivers must prepare to stop if necessary to let a driver on another approach proceed. A driver …
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…
Caravan
A caravan or camper is towed behind a road vehicle to provide a place to sleep which is more comfortable and protected than a tent. It provides …
Bridge
A bridge is a fixed or movable connection for traffic, between two points that are separated by a river, canal, canyon, valley, road, railroad o…
