Route has created a digital map of Great Britain. The map of the road network is derived from data provided by HERE, the location specialist. For interior spaces such as tube stations and shopping malls, scale drawings are translated into digital versions that are compatible with the road network.
Once digitised, each pathway in the country can carry a flow of people or vehicles.
The first step is to identify absolute counts of traffic and pedestrians and to accurately assign them to specific locations. The counts are obtained from many sources including the Department for Transport, Transport for London, local authorities, BAA and Network Rail. Commercial sources such as PMRS are also used. In addition, Route commissions its own counts to verify the third-party data and to add statistics in areas where the official sources might be sparse, for example residential roads.
The task of the Traffic Intensity Model (TIM) is to expand
the traffic figures at known locations so that they cover the entire country. The extrapolation is based on a flow algorithm that simulates car and pedestrian traffic with respect to traffic rules, location infrastructure and the volumes at other surrounding count stations. The TIM takes into account the distance from an original measurement and the traffic complexity in between. It generates short distance flows so that for each point on a street or inside a transport hub or retail location, it is possible to analyse contributing flows and particular intensities. It is able to simulate traffic intensity and generate similar conditions in similar locations.