Located in New Castle, Del., ASTI Transportation Systems is a technologically innovative company that offers products to various state departments of transportation. Its trailer-mounted camera systems are used on roadways to relay video images on a local site for monitoring and control purposes. Its intrusion alarm systems offer work zone protection with the SL-D24 and SL-D12 units. Its QUEUE DETECTOR is a warning device that is used near work areas and toll booths for unexpected changes in the traffic flow. Its OVER-HEIGHT VEHICLE DETECTOR alerts drivers if their vehicles are overheight for an upcoming bridge, overpass and overhead walkway. It has developed a computerized highway information processing system and proprietary software package for traffic management.