For the purpose of collecting travel times, GISTT (GPS-GIS Integrated System for Travel Time Surveys) is developed in this study. The study focuses on the development of a software package that collects the link travel time data both in static and dynamic modes.The static mode refers to the case where a previously dispatched vehicle equipped with a GPS data logger is used to collect travel times along a specified road. The dynamic mode refers to the real time monitoring of probe vehicles on the links using a GPS and Wireless-Internet equipped probe vehicle.GPS (Global Positioning System) technologies have been increasingly used in various applications of transportation planning and operations. One such application is travel time studies. When combined with GIS (Geographic Information Systems), GPS data can be matched with spatial map features such as highways and roads for collecting travel times on those desired links.