NCDOT Level of Service Software Program for Highway Capacity Manual Planning Applications

The Transportation Planning Branch (TPB) of the North Carolina Department of Transportation (NCDOT) desired a user-friendly tool for determining highway capacity and service volumes for freeways, multilane highways, arterials, and two-lane highways based upon the specific conditions present in North Carolina for use in planning applications. The tool developed in this project is based upon the methodology and theory presented in the 2000 Highway Capacity Manual, with default values established specifically for North Carolina conditions across the three regions of the state. The tool includes a unique graphical interface and plot of the measure of effectiveness against average annual daily traffic. This tool allows for various planning scenarios to be examined in an efficient, yet accurate manner, both visually and numerically. Additionally, a comprehensive sensitivity analysis on the input parameters was carried out. The analysis showed that four inputs had high sensitivity, eleven inputs had medium sensitivity, and six inputs had low sensitivity. NCDOT’s future data collection efforts can be expanded and targeted to include information on the most sensitive inputs to enhance future planning analysis efforts by establishing documented default values on these inputs.


  • English

Media Info

  • Media Type: Web
  • Edition: Final Report
  • Features: Appendices; Figures; References; Tables;
  • Pagination: 141p

Subject/Index Terms

Filing Info

  • Accession Number: 01146827
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/NC/2006-06
  • Created Date: Dec 22 2009 8:06AM