Free flow speed statistics are produced by monitored traffic speeds at about 100 sites using automatic traffic counters (), deliberately located where external factors which might restrict driver behaviour are not present.Statistics are presented by different road types and by different vehicle types.

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These statistics relate to free flow vehicle speeds on British roads.

Free flow vehicle speeds provide information on the speeds at which drivers choose to travel and their compliance with speed limits, but should not be taken as estimates of actual average speed across the road network.

An index sheet of all the free flow vehicle speed tables is available.

Average speed statistics are available from road congestion and reliability statistics.

We continue to welcome any feedback on these statistics.

All of the statistics published are National Statistics.

Free flow vehicle speed statistics was assessed by the UK Statistics Authority and confirmed as National Statistics in February 2013.

Local authorities have the power to impose or vary speed limits on principal roads and on all other local roads.

Details of speed limits by vehicle for different road categories can be found below.