A useful variable of traffic information is density-how many cars occupy a stretch of a highway.

Name: A useful variable of traffic information is density-how many cars occupy a stretch of a highway.
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Density is a measure of the number of vehicles occupying a particular length of a roadway at any given time. It is a crucial traffic information variable used to calculate traffic flow, travel time, and congestion levels.

A Useful Variable of Traffic Information Is Density-How Many Cars