Update to the Guide to Traffic Impact Assessment (GTIA) and release of a new Pavement Impact Assessment Practice Note
Please be advised that the Department of Transport and Main Roads’ (TMR) has updated the Guide to Traffic Impact Assessment (GTIA) and developed a new Pavement Impact Assessment Practice Note. Copies of these documents (attached) will be published on TMR’s website.
Why has it been Updated
Why has the GTIA been updated and a practice note developed?
The GTIA has been used by planning and development officers and industry to assess the impacts of development-generated traffic on state-controlled roads for nearly 18 months now. During this time TMR received feedback that both internal and external practitioners were having difficulties with the new Pavement Impact Assessment (PIA) methodology and associated concepts introduced under the GTIA. They requested further guidance from TMR about how to prepare a PIA under the GTIA.
In response, TMR commissioned Bitzios Consulting to prepare a practice note which provides practitioners with more detailed guidance about the PIA methodology including step-by-step worked examples. As a consequence, the PIA chapter of the GTIA (Chapter 13) has been updated to simplify the explanation of the PIA methodology and refer to the practice note as a source of further guidance for industry.
As part of the update, TMR will also be releasing a Road Asset Data (RAD) Request Form which consultants can fill in and submit to TMR to obtain datasets necessary for completing traffic and pavement impact assessments. The RAD Form will also be available at the above website.