Developments of Regional Impact

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Developments of Regional Impact

Per state law (OCGA §50-32-14), GRTA is required to review all Developments of Regional Impact (DRIs) within its 13-county metro Atlanta jurisdiction. GRTA’s purpose is to evaluate the proposed development’s effect on the surrounding transportation infrastructure and to identify options to mitigate current and future impacts to mobility using best-practice standards for transportation and land use.

A DRI is a large, master-planned development that exceeds a threshold size and land use type determined by the Georgia Department of Community Affairs. The Regional Commission determines if the project warrants a DRI review. GRTA reviews all DRIs as determined by the Regional Commission. GRTA and the Regional Commission coordinate to maximize the time and information provided and work together to involve partner agencies, adjacent local governments and the applicant’s consultant team.


The GRTA DRI Review Procedures establishes the requirements of the GRTA required Transportation Study for Developments of Regional Impacts. The GRTA DRI Review Procedures also establishes how GRTA reviews DRIs.


When preparing a Methodology Meeting Packet for a Transportation Impact Study or a Limited Trip Generation Memo, the appropriate template below must be utilized as specified in the template instructions and the GRTA DRI Review Procedures.

The GRTA Board adopted the updated GRTA DRI Review Procedures on March 10, 2021. The update process included peer research and extensive stakeholder outreach including comment periods on draft versions. The updated DRI Review Procedures are effective as of April 9, 2021. Any Methodology Meeting scheduled after April 9, 2021 will need to meet the Methodology Meeting Packet and Transportation Study requirements of the new DRI Review Procedures (2021). Any DRI that had a Methodology Meeting prior to April 9, 2021 that arrives after April 9, 2021 must meet the prior Transportation Study requirements (2013 DRI Review Procedures) and will be reviewed on the review schedule of the DRI Review Procedures (2021).

For more information about recently completed DRI Reviews, maps, and DRI highlights, please visit our DRI Storymap at the link below:

For more information contact:

Beth Davis
[email protected]
(470) 576-2427