EVALUATION OF INTERSTATE HIGHWAY CAPACITY IN SHORT-TERM WORK ZONES

The South Carolina Department of Transportation (SCDOT) initiated a research study to quantitatively examine the development and implementation of a methodology for use in determining an updated lane closure policy within work zones along the interstate highway system. Specific emphasis of the study focused on determining the number of vehicles per lane per hour that can pass through short-term, interstate work zone lane closures, with minimum or acceptable levels of delay. The research tasks included a literature review and survey of states; instrumentation and field data collection; and data analysis and methodology development. A software tool based on the methodology was also developed. This report documents the work conducted on this project.