Traffic Modelling

Traffic modelling involves the use of specialist software that demonstrates how a highway junction or network will cope with specific levels of demand, such as the number of vehicles wanting to get from A to B, or the number of pedestrians wanting to cross a carriageway.


The requirements for traffic modelling are many and varied. It is predominantly used to assess the effects of increased vehicle traffic on a junction or highway network as a result of a proposed development, but it can also be utilized for appraising proposed highway schemes.


Traffic models make it possible to determine how highway networks will cope with predicted traffic movements over time, so that mitigation measures can be planned and implemented before any significant issues arise.


AMB Consultants are experts at using Modelling programs including; PARAMICS, ARCADY, PICADY, LINSIG, TRANSYT


The Benefits

  • It provides the traffic information required to help secure planning permission for a development
  • It can be used to evaluate options to determine the one which gives the lowest congestion and pollution
  • It can be used to optimize signal timings to maximize the operating efficiency of signal controlled junctions thereby reducing congestion.
  • It can be used to determine the design of appropriate minor highway improvements to existing priority junctions and roundabouts to provide additional vehicular capacity.

How We Can Help

AMB Consultants are able to undertake the following types of traffic modelling:

  • Roundabout Modelling: Predicting capacity, queues and delays at at-grade, grade-separated and mini roundabouts. Predicting roundabout capacity improvements that are achievable via highway works, such as approach road widening.
  • Priority Junction Modelling: Predicting capacity, queue lengths and delays at non-signalised major/minor priority junctions, such as T-junctions, crossroads and staggered crossroads. Predicting junction capacity improvements that are achievable via highway works, such as increasing the available visibility envelope for drivers.
  • Traffic Signal Control Modelling: Predicting capacity, queue lengths and delays at signalized junctions, including signalised roundabouts, allowing creation of a set of optimum signal timings for each junction or a set of linked junctions. Predicting signalised junction capacity improvements that are achievable via, for example, manipulation of signal phases and stages, or lane re-configuration.
  • Micro-Simulation Modelling: Modelling of complex highway junctions and networks, which can provide a visual representation of how the junction/network will operate under different scenarios.
  • Pedestrian Modelling: Modelling the behaviour and movement of pedestrians in crowded situations, as well as the delay to both vehicles and pedestrians resulting from the provision of road crossing facilities.