Key Facts:

  • In 2015, there were 834 Killed and Seriously Injured (KSI) casualties on motorways (RRCGB, DfT, 2016), which compared to:

    • 10,955 on A-roads;

    • 3,323 on B-roads; and,

    • 8,762 on ‘Other’ roads

  • In Great Britain, motorways carry about 21% of all traffic but they only account for 6% of fatalities and 5% of injured casualties (RRCGB, DfT, 2016)

  • In countries where data on speed measurements in free-flowing traffic are available, up to 30% of drivers exceed speed limits on motorways.

  • In a study analysing crash data collected from UK motorways, ‘A’ roads and ‘B’ roads, Flatley and colleagues found that between 3 and 30% of crashes could be attributed to driver sleepiness between 1995 and 2004, the 30% figure relating to the M40 in Warwickshire (Flatley, Reyner, & Horne, 2004).

    • This is comparable to earlier reports which stated that driver fatigue can account for anywhere between 4% and 20% of all collisions, though this was not directly related to motorways (RoSPA, 2001; Jackson, Hilditch, Holmes, Reed, Merat & Smith, 2011)

  • According to the latest report (RRCGB, DfT, 2016), casualties of killed and serious severities increased on motorways in 2015 compared with the 2010-2014 average:

    • The number of fatalities increased by 8%;

    • The number of serious injuries increased by 2%; and,

    • The number of slight injuries decreased by2%

    • There was also a 2.6% increase in traffic between 2014 and 2015.


  • Date Added: 03 Apr 2012, 08:06 AM
  • Last Update: 30 Jan 2017, 12:22 PM