PennDOT's 'Pavement Survey Truck' Isn't Looking for Potholes

Don't let the name fool you. The Pennsylvania Department of Transportation Pavement Survey van isn't just looking at pavement.

You might have seen the vehicle on local state roads recently, as on Route 252 in Tredyffrin Township in the attached photo. According to PennDOT spokesman Gene Blaum, it's a Location Referencing System van, and it's driving around making sure that the information in PennDOT's computer system matches reality.

Blaum explained via email that the van verifies the locations of features like signs and bridges throughout the state. It even does spell-check:

It determines the location of these features, checks for correct spelling of intersecting roads, etc. It is part of PennDOT’s Quality Assurance program to make sure the information in the Department’s Roadway Management System is accurate.  The QA cycle is performed on five-year cycles.  This program was developed to increase accuracy and efficiency of gathering data maintained within the RMS database.  

There are no cameras on the van. The small, square box on the bumper is an infrared target sensor used to calibrate a distance-measuring instrument.  A GPS receiver sits on the roof, along with a light bar and message board for traffic safety.