SEPI was responsible for the creation of a traffic impact analysis for the Green Level (H-7) High School Development in Cary, NC. The project examined the effects of the high school queuing and traffic on the surrounding road network and adjacent neighborhoods. SEPI collected peak hour turning movement traffic counts during the AM and PM peak hours at six off-site (signalized and unsignalized) intersections and three site driveways. Background traffic for this development included 14 offsite developments. At final build-out the proposed high school is projected to have a maximum of 2,350 students. The existing traffic counts and MSTA student calculator were used to estimate future trip generation, trip distribution, and queue lengths in order to analyze the on-site traffic circulation and queuing and effects of site traffic on off-site intersections. Because of site traffic, several on and off-site improvements were recommended to help facilitate future traffic volumes.
SEPI authored a traffic impact analysis to summarize the project findings including the recommendations for future roadway improvements. For the project, SEPI attended several meetings with the NCDOT and WCPSS. The study was submitted to, reviewed, and approved by the NCDOT. SEPI was responsible for the offsite roadway improvements at the signalized intersections of NC-55 High House Road/Green Level West Road and NC-55/Jenks Road/Old Jenks Road. Additional widening and turn lanes were designed at both intersections. Services included: survey, roadway design, hydraulics design, utility design/coordination, traffic control and pavement marking design, traffic signal and ITS design, and signing.