Scottish Transport Statistics No 29: 2010 Edition

Table 4.6 Local authority road network condition ^{1, 2}

Source: Scottish Road Maintenance Condition Survey - Not National Statistics
1. From 2007-08 the basis of the statutory road performance indicator in Scotland changed to the UK Standard RCI.
More detailed information on the changes can be found at the following web link
http://scots.sharepoint.apptix.net/srmcs/General%20Publications/SCANNER%20RCI%20Explanatory%20Notes.pdf
2. While it has been possible, following the change to the indicator, to calculate the equivalent RCI value for all classified roads from 2005-06, it has not been possible to do this in a reliable manner for unclassified roads, owing to a lack of cracking data for those years.
As unclassified roads represent a significant part of the total road network, RCI data for the network is similarly not available for this period
It is important to note that owing to the different formulation, no valid comparison can or should be made between the two series
3. The categories used to indicate the condition of the road are described in Section 3.7 of the text. In brief:
amber - further investigation should be undertaken to establish if treatment is required
red - the road has deteriorated to the point at which it is likely repairs to prolong its future life should be undertaken.
4. Information for 2002-03 is available only for A roads - see Section 4.3 of the text.
5. The SPI figures for Scotland in 2004-05 exclude Glasgow, as the survey in Glasgow was undertaken on a different basis in that year.