Assessing air quality impacts from surface roads

TRAQ helps to assess these impacts using a simple, worst-case model. Using TRAQ can identify if detailed modelling is needed to provide a more accurate assessment. A manual is provided, this explains how to use TRAQ, and the assumptions behind it.

TRAQ has been designed for Excel 2003, Excel 2007 or Excel 2010, in a Windows operating system. The air quality assessment component requires CALINE-4 which is available for free download from the Caltrans website.

Disclaimer

TRAQ has been designed only for the first-pass screening of air quality impacts in connection with road projects when preparing an environmental impact assessment for or on behalf of Transport for NSW. TRAQ does not provide accurate air quality assessments but rather uses worst-case scenarios to determine whether or not more detailed assessment is required. TRAQ is not suitable for other purposes.

Acknowledgements and Third Party Licence Terms

TRAQ was created for Roads and Maritime in 2005 by Australian Air Quality Alliance, Holmes Air Science, Parsons Brinckerhoff and CSIRO. It was subsequently further modified by Sinclair Knight Merz in 2011.

TRAQ links to CALINE-4 which is owned by the California Department of Transportation (“Caltrans”). By using TRAQ you agree to Caltrans’ software licence. If you do not already have the most recent version of CALINE-4, click on I AGREE on the Caltrans’ software licence to reach the download page for CALINE-4. Download CLAINE 4, extract CALINE4.exe and place in the same directory as TRAQ.

TRAQ incorporates the National Greenhouse Accounts Factors prepared by the Commonwealth Department of Climate Change and Energy Efficiency (“DCCEE”) which is reproduced under Creative Commons Attribution Licence (3.0 Australia).

TRAQ also incorporates air quality data by permission from the NSW Environment Protection Authority.

TRAQ has been developed as tool for first-pass screening of air quality impacts in connection with road projects when preparing an environmental impact assessment for Roads and Maritime. TRAQ does not provide accurate air quality assessments but rather uses worst-case scenarios to determine whether or not more detailed assessment is required. TRAQ is not suitable for other purposes and Users rely on TRAQ for other purposes at their own risk.

User Agreement

By downloading the TRAQ files you agree that you have read and agree with the Disclaimer and Third Party Licence Terms.

Download TRAQ

Tool for Roadside Air Quality (TRAQ) - tool and user manual (zip file (ZIP, 815.66 KB)