There are a number of existing Scottish transport models. These range from large scale models covering very large areas such as the Transport Model for Scotland (TMfS), to relatively small single junction models such as the Paramics model of the A720 Sherrifhall Roundabout signalisation.
Given the number and range of models available only summaries of the large scale Scottish models are provided in this section. Readers should contact local authorities for summary details of local models available within their areas.
Within Scotland there are two large scale demand models, namely:
Full summaries of these models are included Tables 17.9, and 17.10. These summaries contain contact details for each of the models and these people should be contacted for more detailed information on the models.
Both these models have also been used in the development of accessibility models. However other simpler forms of accessibility modelling are also practical.
Land-use transport interaction models are the most sophisticated approaches and DELTA models are now available for both Glasgow and Edinburgh. They are however limited in terms of the number of trip purposes which can be included.
Table 17.9: Transport Model for Scotland (TMfS) Summary|
Title |
TRANSPORT MODEL FOR SCOTLAND (TMfS) |
|
Description |
Transport Model for Scotland (TMfS) is a multi-modal transport demand and assignment model with an interactive Land-Use model. See http://www.tmfs.org.uk/ for further information. |
|
Study Area or Route |
The model currently covers 95% of the population of Scotland and all of the principal urban centres except Inverness. The modelled area covers all Trunk Roads and a large proportion of non Trunk principal roads. |
|
Commissioned and Developed by |
TMfS was commissioned Transport Scotland and developed by MVA. |
|
Objectives |
1. To provide robust traffic forecasts on all Trunk Roads within modelled area over a twenty year period; 2. To enable traffic & economic assessments of any proposed major inter-urban road schemes at assessment Stages 1 (corridor assessment) and 2 (route option assessment) of the roads design process; 3. To test the effect of and/or interaction between major inter-urban road and PT schemes & major transport policy options; and 4. To provide consistent information and a framework for local scheme models, as a basis for the development of Local Transport Strategies or with a view to testing potential strategies. |
|
Type of Model |
Enhanced Four Stage, multi-modal CUBE VOYAGER model. |
|
Model Base |
Base Year: 2007 Time Periods: 1 hour AM, OP, PM (neutral month) Flow Units: Car in Work, Car Non Work, LGV&OGV; PT Trips. |
|
Size of Model |
No. Zones: 720 (approx.) No. Links: 64,000 (approx.) No modelled junctions in the National Model |
|
Assignment Method |
Equilibrium / Congested Assignment. |
|
Modes Modelled |
Car / LGV & OGV; Buses & Trains. |
|
Traffic Growth Forecast Used |
Locally derived forecasts based on LA planning data for 2011, 2016, 2021 and 2026. Consistent with TEMPRO / NRTF sub-models (car-ownership model etc). |
|
Other Info |
CUBE VOYAGER and possibly CUBE CLUSTER licences will be required to run TMfS. |
|
Contact |
Alison Irvine, Major Transport Infrastructure Projects, Tel. 0141 272 7590 |
Table 17.10: Strathclyde Integrated Transport Model (SITM) Summary
|
Title |
STRATHCLYDE INTEGRATED TRANSPORT MODEL (SITM) |
|
Description |
The SITM is a multi-modal model comprising of trip end synthesis, distribution, modal split (includes Glasgow city centre parking model), highway and public transport assignment models. The revised model (SITM4) will be available from September 2003. SITM4 uses TUBA for economic evaluation of road and public transport scenarios having fixed or variable matrices. Travel demand is defined by purpose and car availability, with park & ride and crowding effects via optional sub-models. |
|
Study Area or Route |
SITM4 covers the west central Scotland area encompassing East & West Dunbartonshire, North & South Lanarkshire, Glasgow, East Renfrewshire, Inverclyde, North, South and East Ayrshire and part of Argyle and Bute. |
|
Commissioned and Developed by |
The SITM4 has been expanded and developed by Jacobs Consultancy, on behalf of SPT, from the original SRC/SPTE model. |
|
Objectives |
1. To provide robust traffic forecasts on all Trunk Roads within modelled area over a twenty year period; 2. To assist transport planning and development of an integrated Public Transport network through the generation, testing and development of new, robust proposals; 3. To test the effects of and/or interaction between transport schemes; 4. To enable traffic and economic appraisal of proposed transport schemes. |
|
Type of Model |
Conventional Four Stage, multi-modal model. SATURN Highways model and TRIPS Public Transport Model. |
|
Model Base |
Base Year: 2001 Time Periods: 1 hour AM, OP, PM (spring weekday) Flow Units: Car by trip purpose and Goods Vehicles. |
|
Size of Model |
No. Zones: 1,059 No. Links: 20,144 No. Nodes: 6,775 No. Modelled Junctions: 1,000 |
|
Assignment Method |
Highways: Wardrop Equilibrium Public Transport: Multi-path Logit choice with facility for new modes. |
|
Modes Modelled |
Car, Goods Vehicles, Buses, Trains and Glasgow Underground and New Modes. |
|
Traffic Growth Forecast Used |
Locally derived forecasts based on LA planning data for 2006, 2011 and 2021. |
|
Other Info |
|
|
Contact |
SPT: Neil Sturrock Tel. 0141 333 3745; Fax: 0141 333 3284; email: neil.sturrock@spt.co.uk |
