The traffic engineers at Wells + Associates manage traffic impact analyses for a wide variety of developments in South Carolina and throughout the Carolinas. The three projects below involved traffic impact analyses (TIA) in Fort Mill and Lake Wylie, SC (York County) and in Indian Land, SC (Lancaster County).  

Traffic Impact Analysis in Fort Mill, SC: MHC Kenworth Truck Dealership

Wells + Associates prepared a traffic impact analysis (TIA) for the proposed development of the MHC Kenworth truck parts and service center located at 3361 Route 21 in York County, South Carolina. The Applicant proposed relocating an existing truck parts and service center to the proposed site, which was vacant. Traffic counts were performed at the existing facility and used as the basis for the proposed site traffic.  

The traffic analysis was required per York County guidelines due to the anticipated daily trip generation.  In addition, the South Carolina Department of Transportation (SCDOT) requirements were included within the scope, because the proposed site access was located along a SCDOT maintained roadway. Our study was prepared based on the York County SC Government Traffic Impact Analysis Guidelines Methodology as well as Chapter 6 – Traffic Impact Studies of the SCDOT Access and Roadside Management Standards. 

The study encompassed two study intersections in addition to the two proposed site driveways. The subject site was proposed to be served by two access points along Carowinds Boulevard (US Route 21). 

Cross Creek Phase 2 Traffic Impact Analysis in Lancaster County

The W+A traffic engineering team prepared a traffic impact analysis (TIA) for the proposed expansion of the Cross Creek Shopping Center along Charlotte Highway (U.S. Route 521) in Lancaster County, South Carolina.  

A TIA was required per Lancaster County guidelines because development of the site in question would result in greater than 50 peak hour trips. Additionally, as the site impacted a state-maintained roadway and exceeded the 100-peak hour trip threshold, the study required SCDOT review and approval. The study was prepared in accordance with the Lancaster County Unified Development Ordinance (UDO), Section 6.8 Transportation Impact Analysis Guidelines and Chapter 6 – Traffic Impact Studies of the SCDOT Access and Roadside Management Standards. 

Our study, which included analyses of the U.S. Route 521/Worldreach Drive and U.S. Route 521/Collins Road intersections, identified mitigation measures to be implemented to offset the impacts of the proposed development including improvements to the site driveway along U.S. Route 521 and signal improvements at the U.S. 521/Worldreach Drive intersection. 

Lake Wylie Learning Experience Daycare Traffic Impact Analysis

The W+A traffic engineering team prepared a traffic impact analysis for the proposed Lake Wylie Learning Experience Center in York County, SC. Per York County guidelines, a Tier 2 traffic impact analysis was required due to the anticipated traffic generation exceeding 400 average daily trips and 100 peak hour trips per day. SCDOT was also involved in the review process due to the site being on a road maintained by the state of South Carolina. The analysis was prepared based on the York County Government Traffic Impact Analysis Guidelines Methodology.  

The evaluation encompassed three study intersections, with the subject site vacant and located on Blucher Circle, to the east of Charlotte Highway (SC Route 49). The daycare center was slated to house a new 10,000-square foot facility adjacent to the shopping center parking lot to the north. Primary access was to occur from the shopping center’s access along Blucher Circle.  

Our analysis indicated that delays were estimated to increase marginally due to regional traffic growth but would continue to operate at an overall acceptable level of service.