In order to understand how well the model reproduces observed traffic levels, the traffic flows generated by the model following assignment are compared to various real traffic counts conducted around the network. A set of traffic counts, generally in the areas where the model is more detailed, is used in calibrating TMfS. Having completed the calibration process, the remainder of the counts are used to validate that TMfS is behaving as expected.

408 traffic count sites were incorporated into TMfS:07 as part of the calibration process. 

Traffic counts used in calibration are all included within the area covered by TMfS and cover all of the key roads within Scotland. The majority of counts were also undertaken in 2005 and came from the Scottish Road Traffic Database (SRTDb).

View traffic counts used in TMfS:07.