DIADEM

(Dynamic Integrated Assignment and Demand Modelling)

Product description:

DIADEM is maintained for the Department by Mott MacDonald and provides a straightforward way to implement a variable demand model consistent with WebTAG guidance. It uses an incremental hierarchical logit model for the following demand responses: trip frequency, time period choice, mode choice, destination choice/distribution. Travel times and other costs are provided by a third party traffic assignment model (currently CONTRAM or SATURN). DIADEM is also designed to achieve convergence between supply and demand, as specified in WebTAG Unit 3.10.4.

Date current version released:

June 2009 (3.1)

Support offered:

Email support and software maintenance. DIADEM user group meetings, DIADEM training, website.

Related software:

CONTRAM, SATURN, TUBA

Other information:

Windows XP or Vista. 256Mb RAM (although large installations will benefit from extra RAM). 10Mb hard disk space (for installation). Single site licences: local authorities and consultants within the European Union - £1,000 plus VAT; educational use within the EU - £300 plus VAT; commercial use outside the EU - £2,000; educational use outside the EU - £500. The licence price includes free software support, maintenance and minor upgrades.

Supplier contact details:

Mott MacDonald, Stoneham Place

Stoneham Lane, Southampton SO50 9NW

T: 023 8062 8778

E: diadem@mottmac.com

www.dft.gov.uk/diadem