National Speed Survey, 1983
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下载链接：
https://datacatalogue.cessda.eu/detail?lang=en&q=345aa99ec3c3a372c41bd11e091b107c7f599de710846d8e649167cacc289ed3
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资源简介：
<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.
提供机构：
UK Data Service
创建时间：
1990-01-17
