@article{ref1,
title="Radar pinpoints needed road repairs",
journal="American city and county",
year="1999",
author="Couret, C.",
volume="114",
number="12",
pages="24-25",
abstract="When work crews make repairs on roadways and bridges, the work often involves tearing up stretches of road, cutting off one or more lanes, and delaying traffic for hours or even days. To make repair work more efficient, many transportation departments are using nondestructive ground penetrating radar (GPR) technology to assess damage before workers dig into the roadway. The surveying equipment can be attached to the rear of vehicles to inspect roadways for subsurface problems. The GPR sends a signal through the surface to detect cracks and voids and to survey the general condition of the road. It can check road thickness and locate support rails or utility lines.<p />",
language="",
issn="0149-337X",
doi="",
url="http://dx.doi.org/"
}