Road model
The National Road Model forms part of the overall 2007 TMfS model hierarchy. It is a strategic model which has been prepared with a level of detail commensurate with appraising national policy and strategic land-use and transport interventions and providing a key source of transport supply and demand data.
The National Road Model has been developed using the GIS-based software package ArcGIS and Citilabs CUBE Voyager software.
A range of data were used to create the National Road Model, including:
- road network based on the Ordnance Survey (OS) MasterMap Integrated Transport Network (ITN) GIS data;
- zone system which makes use of the Scottish Neighbourhood Statistics Data Zones;
- 2001 Census Journey to Work data;
- Road Side Interview Data (RSI);
- The Scottish Roads Traffic Database (SRTDb);
- Traffic Counts; and
- Journey times - Traffic speed data (ITIS) and Strategic Transport Projects Review (STPR) Highland Model journey time data,
