Olive Branch Signal Design/TIA/Phasing Analysis

The proposed residential development consisting of more than 600 homes in Durham, North Carolina would add traffic to the surrounding roadway network. In order to satisfy local traffic requirements and mitigate project impact, Exult Engineering was contracted to perform a Traffic Impact Analysis for the site. The Traffic Impact Analysis report was performed in accordance with local standards (NCDOT Congestion Management’s Capacity Analysis Guidelines and the City of Durham’s Guidelines for Traffic Impact Analysis).


Based on the analysis performed and coordination with NCDOT and the City, necessary roadway improvements were determined that consisted of turn lane improvements and further evaluation of study intersections to determine the need for signalization. As an extension of the TIA, Exult prepared additional analysis including signal warrant analyses in accordance with the Manual on Uniform Traffic Control Devices to assess the need for new traffic signals in the study area.


Exult also performed a Phasing Analysis to determine when each required improvement would be necessary in relation to the developer’s phasing plan. Based on the results of the analysis, three new traffic signals were deemed necessary by the City and NCDOT. In coordination with subconsultants and the developer, Exult provided Traffic Signal, Electrical, Signing and Striping plans for the installation of three new signalized intersections in Durham according to NCDOT and City of Durham Standards.

Brittany Chase conducting field work for Olive Branch traffic engineering project