Transport and Travel in Scotland 2014

Table TD10: [Congestion] Percentage of car / van stages delayed by traffic congestion, 2004-2014

Table TD10: [Congestion] Percentage of car / van stages 1 delayed by traffic congestion, 2004-2014 2
  2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
Driver congestion 11.9 11.6 12.7 14.4 13.1 11.0 10.5 11.2 9.9 9.7 11.7
Sample size (=100%)  14,460  13,780  14,010  9,260  9,320  8,680  7,580  8,310  9,830  10,200  9,820

1 A journey can consist of one or more stages.  A new stage is defined when there is a change in the form of transport or when there is a change of vehicle requiring a separate ticket.
2 Question first asked in 2003

Table TD10a: [Congestion - reason] Reason for congestion for car / van stages, 2012-2014 1
  2012 2013 2014
Volume of traffic 72.8 80.0 82.0
Road or maintenance works / temporary traffic lights 25.8 17.9 18.9
Road accident 1.1 1.6 1.7
Broken down car 0.7 . 0.5
Traffic lights / signals not working 3.1 2.6 2.0
Lane blocked by parked cars 1.3 . 0.4
Bad weather 1.4 1.6 1.5
Other 2.8 3.2 1.0
Don't know 0.4 . 0.3
Sample size (=100%) 810 780 930

1 Respondents can provide more than one reason so percentages will not add up to 100%