Summit has a large role in the modernization and expansion of the City of Durham computerized traffic signal system which includes new controller and cabinet assemblies at approximately 387 signals. Summit prepared signal designs and electrical details for 2070LX controllers using ASC/3 software at 20 locations, traffic signal and CCTV camera cabinet inventories, as well as developed emergency vehicle preemption wiring details for the new GPS-based preemption system. Additionally, Summit is designing the entire CCTV digital camera system for 127 locations and the video wall. We also prepared the CCTV Site Study Report and are performing QA/QC reviews on utility make-ready plans, construction plans and specifications.
Summit served as Prime consultant for a Mini Roundabout for NCDOT through the Statewide On-Call Planning and Design contracts. The goal of this project was to improve the operational safety of the intersection of Carver St. and Broad St./Kenan Road in Durham, NC. Due to several rear-end collisions and numerous near-misses, a mini-roundabout was utilized to calm traffic while continuously processing traffic through the intersection, thus eliminating the need for side street traffic to compete for limited gaps in the predominant Carver Street movement. The mini-roundabout approach limited the amount of impact to surrounding property owners but accommodates the turning movement of larger vehicles (transit/school buses, fire truck, etc.) through the use of a mountable center island. The Summit team provided roadway design, hydraulic design, erosion control design, traffic management and pavement marking design, and utility coordination/design services for the project. Summit also participated in NCDOT’s Public Involvement efforts and provided supplemental route location surveys and easement staking as needed to complete the project.
Summit completed a traffic signal design, electrical programming detail, communications cable routing plan and fiber optic splice detail for the intersection of Ramsey Street and Eastwood Avenue (06-1178) in Fayetteville, North Carolina. Work includes performing field investigations and coordination with utility agencies to determine placement of traffic signal metal poles.