The article by Oloufa presents a GPS-based automated quality control system for tracking pavement compaction. The system was designed to track a single compactor, and all calculations were done on board the compactor. A GPS-based positioning device is placed on the compactor. The main objective is to test paving surfaces that suffer from low density and cracking in order to avoid accidents and an uncomfortable ride. The next article, by Chamberlain and Gambao, discusses an automatic system for concrete repair preparation. The system is based on high-pressure water blasting robots that are used to remove defective concrete in the preparation of repair work. The system incorporates sensing and control strategies that are robust in this harsh environment. The sensing technology is based on a nondestructive testing metal detector (covermeter).