TTI has done extensive research and development on probe based travel time data collection through it’s partnership with Houston TranStar, who operates one of the largest regional toll tag data collection systems in the world. This system is used as the data source for the Houston TranStar Traffic Map.

The main goal of the AWAM system is provide high quality traffic information that accurately depicts conditions on instrumented roadways. In order to accomplish this, the system must first be calibrated to read the intended devices at the roadside. In addition, any invalid data that does make it’s way into the system must be properly screened and discarded. These areas have been the main focus of TTI’s research.

In regards to AWAM, TTI research is currently focused on the following areas: