National Speed Survey, 1983
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<P>Abstract copyright UK Data Service and data collection copyright owner.</P>To measure the speeds at which drivers choose to travel in unconstrained conditions on motorways and non built-up A roads (both single and dual carriageway), subject only to the normal maximum speed limit.<br><B>Main Topics</B>:<BR> Variables<br> Vehicle type; vehicle speed; separation distance from vehicle in front; length and height of HGVs.
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UK Data Service创建时间：
1990-01-17
