Wake Forest Unified Development Ordinance - July 2022

Subdivision & Infrastructure Standards 6.11 Transportation Impact Analysis


Retail / Shopping Center

Level of Study Required by Development Type None (unless located in area of special concern)

Industrial or Warehouse <150 employees 150 to 1,000 employees >1,000 employees





<100 rooms 100 to 500 rooms >500 rooms

<100 peak hour trips 100 to 500 peak hour trips >500 peak hour trips

<100 units

<50,000 sf


50,000 sf to 350,000 sf

100 to 500 units

Standard TIA

<100,000 sf

Enhanced TIA

>500 units

>350,000 sf

>100,000 sf

6.11.2. Standard TIA Requirements

A standard TIA includes the following elements:

A. Abstract or Summary: Summarize description of proposed development, location, traffic generation, existing and future conditions (level of service), and recommended improvements. The report should not exceed 2 pages and preferably limited to one page. B. Description of Development: Describe acreage included in development, existing and proposed land use, existing and proposed zoning, proposed density (number of houses, square feet of development, etc.) C. Study Area: Generally ¼ mile to ½ mile from each proposed site access along roads accessed by the site. This area may, in a few cases, be greater if the site is on a road with no intersections within that distance. D. Site Location: Include location map showing site in relation to major streets and at least one-mile radius from site. E. Traffic Generation: Indicate number of trips generated by site daily, AM peak hour, PM peak hour (AM peak hour may be omitted for retail uses which are not expected to generate significant traffic volumes during this period). Indicate internal or pass-by traffic generation if appropriate. For rezoning, indicate traffic generation under existing zoning as well as proposed zoning. Indicate source of trip generation rate, land use code, and units used to derive generation. F. Trip Distribution: Indicate percentage distribution of trips, by direction, within study area and method used to obtain. G. Access Location(s): Location of planned streets or driveways and access to existing streets. Indicate other streets or driveways within study area, including those across the street. Indicate coordination with NCDOT where appropriate. H. Existing Road and Traffic Conditions: Street laneage and classification, traffic control devices, existing daily traffic volumes within study area. Show traffic volumes and level of service of signalized intersections and proposed site access points within study area during AM and PM peak hour (PM only for retail). Include work sheets or computer printouts showing counted traffic volumes and level-of-service. Illustrate in figure(s) showing peak hour volumes, lanes, and level of service. For unsignalized intersections, show level-of-service for individual movements. Discuss transit service if applicable. Discuss accident history, if appropriate. I. Planned Improvements: Discuss and describe any planned road improvements in the study area which could affect future traffic. Note whether project is shown on thoroughfare plan, collector street plan, or NCDOT TIP. J. Future Conditions: Same as for existing conditions, plus site traffic assigned to driveways or access points, for condition with full build-out of project, at build-out year. Include growth in background traffic due to other approved developments or to general growth in area. May show more than one phase, if project is to be phased.

Town of Wake Forest Unified Development Ordinance – July 19, 2022


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