Scottish Household Survey: Travel Diary 2011
| 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | |
|---|---|---|---|---|---|---|---|---|---|
| Driver congestion | 10.8 | 11.9 | 11.6 | 12.7 | 14.3 | 13.1 | 11.0 | 10.5 | 11.2 |
| Sample size (=100%) | 10,817 | 14,463 | 13,780 | 14,011 | 9,264 | 9,324 | 8,679 | 7,580 | 8,314 |
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.