Date of Award
Master of Science
Civil and Construction Engineering
Dr. Jun-Seok Oh
Masters Thesis-Open Access
Intersection control delay is considered a primary measure for determining the level of service at signalized intersections. This thesis develops a technique estimating intersection delay using GPS data from GPS-enabled vehicles. First, this study analyzes existing methods that estimate control delays using GPS data and proposes an improved technique in response to the weakness of those methods. The proposed method estimates the control delay well with better accuracy covering the weaknesses. However, the control delay from the GPS data has a sample size problem for determining the level of service at signalized intersections. Therefore, this thesis proposes a data fusion technique using the data from both GPS devices and loop detectors in order to be able to estimate delays and the level of service at signalized intersections with the small number of GPS-enabled vehicles. The data fusion technique developed in this study improves the accuracy by 59.6% with one GPS-enabled vehicle.
Han, "Data Fusion Technique for Measuring Intersection Delay Using GPS-Enabled Probe Vehicles" (2007). Master's Theses. 3972.