AGA personnel have designed hundreds of new and modified traffic signals and signal interconnect projects using AutoCAD for a large number of cities and counties throughout California. AGA’s designers have both public and private experience and have been part of the AGA team for over 10 years. All signal and striping improvement plans are prepared using AGA’s CAD package for traffic signal and roadway design. The package consists of AutoCAD and a library of Caltrans symbols. AGA has been a leader in the utilization of AutoCAD for signal design, and has instructed various City staffs in the use of AutoCAD for signal design. For private developers and contractors, AGA’s experience in “design/build” operations is invaluable. AGA’s staff of design experts manage all aspects of the project for the developer, from concept to completion.
Other traffic engineering services provided by AGA include traffic safety studies, speed zone surveys, “red light” camera investigations, parking studies, street light design, demonstration projects, bicycle studies and facilities design, transit studies, truck studies, traffic studies for new development, traffic signal coordination timing development, pedestrian facilities studies, and expert witness testimony.
AGA has developed various custom-designed software packages to assist traffic engineers in analyzing data such as determining traffic flow, accident statistics and signal operating characteristics. The software is also used on an on-going basis by AGA staff to efficiently perform engineering services for clients.
One example is HCM (Highway Capacity Manual) software developed by AGA staff to provide an interactive simulation and analysis of traffic signals based on state-of-the-art HCM delay methodology. The program, WEBSTER, is a direct application of the 2000 Highway Capacity Manual. It provides for signal timing development, capacity analysis and Level of Service determination. The signal timing feature, which is not typical of most HCM software, allows for very efficient signal operation, and is critical for determining proper system cycle lengths for coordinated signals.
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