Project: Equilibrium Modelling Phase 1 and 2

Reference: H102D & H102D1

Last update: 23/03/2007 10:55:03


This research uses the earlier work on 'Linking Trip Ends and Traffic' to develop an equilibrium framework suitable for use in the National Transport Model work. The aim is to be able to provide a modelling structure which can be used for a wide range of policy options, and produce a reiterative model capable of balancing supply and demand for road space.


The National Transport Model development requires modules capable of producing a balance between supply of road-space and traffic predicted to use the road network. Conventional models can be very large and iterating between supply and demand in a conventional manner seemed unlikely to be achieved. This research attempts to produce a method for achieving satasfactory equilibrium.


Marcial Echenique & Partners
49-51 High Street, Trumpington, Cambridge, CB2 2HZ
01223 840704

Contract details

Cost to the Department: £229,000.00

Actual start date: 08 May 2001

Actual completion date: 31 March 2003


Pass 1 Model Calibration Report
Author: ME&P
Publication date: 30/10/2002
Source: DfT Website
More information:

Summary of results

  1. This project was part of the revision of the National Road Traffic Forecasts (NRTF). The improvements to the data within the NRTF modelling framework enabled the DfT to provide a structure to the forecasting model capable of representing the impact of a wider range of policy options.