Letter from Dr. Malcolm McKibbin, dated
We have consulted with officials in other Departments and elsewhere within the Department for Regional Development, but unfortunately the information that you requested is not held. Roads Service does however carry out a vehicle kilometres of travel (VKT) survey each year to estimate the total distance travelled by vehicles on Northern Ireland's road network. This provides a measure of the usage of the various roads and facilitates a direct comparison with the rest of the United Kingdom and other European Countries.
The following table lists the estimated total distance travelled by each of the five different categories of vehicle during the past three years.
|Class 1 - Cars and Vans||15,970||16,751||16,916|
|Class 2 - Medium Commercial||1,061||1,002||992|
|Class 3 - Heavy Commercial||734||655||665|
|Class 4 - Articulated Commercial||423||385||392|
|Class 5 - Bus and Coach||60||60||58|
With regard to estimating future road freight journeys no formal forecast exists. However within Roads Service we use transport models to develop traffic forecasts to enable us to assess the viability of proposed road schemes.
From the information we have available I can advise that our forecasts for the growth of all road traffic journeys indicates that the growth rate will fall to under 2 per cent. per annum by 2012.