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intersections (types/examples, alignment, profile, sight distance, roundabouts); grade separations and interchanges (types, warrants, safety, economic factors). The contents of this
Distance is a scalar measure of the interval between two locations measured along the actual path connecting them. Displacement is a vector measure of the interval between two locations measured along the shortest path connecting them.
In the field of road transport, an interchange (American English) or a grade-separated junction (British English) is a road junction that uses grade separations to allow for the movement of traffic between two or more roadways or highways, using a system of interconnecting
two-lane roads where important intersections are encountered or where additional lanes are to be provided later), knowledge of the directional distribution of traffic during the design hour (DDHV) is essential for design.
Road traffic injuries are the leading cause of death for children and adolescents aged 5–19 years. Worldwide nearly 220,000 children and adolescents aged 0–19 years die annually due to road traffic injuries.
Distance is defined to be the magnitude or size of displacement between two positions. Note that the distance between two positions is not the same as the distance traveled between them.
Dual carriageways. Different kinds of road can be dual carriageways - but they all have a central reservation or barrier separating the traffic going in opposite directions.
