Work zones on rural two-lane highways can impose inconveniences on travelers through unexpected, long delays due to lane closures. These delays can increase driver stress and frustration, potentially affecting driver behavior within and after the work zone, which could impact the safety of workers and other motorists. One way to reduce driver frustration is to provide real-time information on the length of delays that motorists can expect as they approach a work zone. This information could take the form of a countdown timer that reflects about how long the wait is before being able to proceed through the work zone. This project will develop a prototype system to estimate the real-time delay and information dissemination for a two-lane highway work zone with a lane closure for which a pilot car manages traffic