These statistics relate to speed compliance on roads in Great Britain. Speed compliance statistics 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.
Please note that these statistics were published as free flow vehicle speed statistics before 2016. The change of titles reflects a change in emphasis in the release towards compliance with speed limits and the wider themes of speeding and driver behaviour. Although average free flow speeds are still published, these are not representative of average speed across the wider road network. For such average speed statistics, please visit the road congestion and travel time statistics page.
Speed compliance statistics are produced by monitored traffic speeds at about 100 sites using automatic traffic counters (ATC), 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.
National administrations in England, Scotland and Wales are responsible for setting speed limits on motorways and trunk ‘A’ roads. 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.
Further technical information on speed compliance statistics: