Roadworks cost appraisal tool

QUADRO
Queues and Delays at Roadworks

QUADRO is a Department for Transport sponsored computer program maintained and distributed by TRL. Its primary use is in rural areas. It estimates the effects of roadworks in terms of time, vehicle operating and accident costs on the users of the road. Individual roadworks jobs can be combined to produce the total cost of maintaining the road over time.

A full copy of the QUADRO user manual is included on the software release disk. (The manual is Volume 14 of the Design Manual for Roads and Bridges (TSO).) The manual can also be viewed online at www.dft.gov.uk/strategy/quadro.

Dedicated QUADRO website

A website dedicated to COBA and QUADRO can be found at www.dft.gov.uk/cobaquadro.  This website aims to facilitate the distribution of new releases of this software to customers by allowing existing licence holders to download the latest versions as they are made available.  To do this each customer will shortly be sent a user name and password.

When a new release of either COBA 11 or QUADRO 4 is made available, existing licence holders will be informed by e-mail.  To download the latest versions customers should log onto www.dft.gov.uk/cobaquadro/downloads.