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Welcome to the home of COBA, QUADRO, MyRIAD and SAR, software tools provided by Highways England's Transport Planning Group (TPG) - formerly known as Traffic Appraisal Modelling and Economics (TAME) - maintained and supported by Mott MacDonald. Users can request free downloads of the latest versions of the software by following the link on the relevant software pages.

Manuals for all four software tools can be downloaded directly from the User Manuals section.

Please see below for the current software versions. The COBA, QUADRO and MyRIAD versions are consistent with TAG July 2021. The SAR version is consistent with TAG November 2021.

Software	Current version	TAG Databook
COBA	COBA2021	July 2021
QUADRO	QUADRO2021	July 2021
MyRIAD	MyRIAD2021	July 2021
SAR	SAR2022	November 2021