In 1999, WSDOT purchased a data distress collection van
that records pavement profile (ride, faulting, and rutting) and video images of the
pavement surface, ahead view, and shoulder view. This data can be collected at highway
speeds and will significantly enhance the accuracy of the data collection process as well
as provide a variety of research and analysis options concerning pavement performance. In
years previous to 1999, this data was collected with a "windshield" survey. The
raters would ride in a van over portions of the state routes, drive approximately 10 mph,
and rate the roadway from what they could see. The collection van greatly improves the
accuracy and quickness of the data collection process. |
