Best Practices for Road Weather Management Version 2.0
The Georgia Automated Adverse Visibility Warning and Control System
Georgia Tech and the Georgia DOT jointly developed an automated Adverse Visibility Warning and Control System (AVWCS) and installed it at a site known for fog problems on Interstate Highway 75 in south Georgia. Nineteen fog sensors monitor visibility, and five sets of traffic loops monitor speed and headway for northbound and southbound moving traffic lanes. The integrated system is used to automatically generate warnings and speed advisories to be posted on two upstream Dynamic Message Signs (DMSs) to alert motorists of adverse conditions. The system also automatically notifies the GDOT Transportation Management Center (TMC) in Atlanta whenever a hazardous situation occurs as well as provides telephone access for remote monitoring by other transportation officials. Beta testing has shown the system to perform as designed.
Georgia Tech Research Institute, Prepared for FHWA. For an electronic copy of this resource, please direct your request to WeatherFeedback@dot.gov.
Gimmestad, et al
Motorist warning system
Dynamic Message Signs (DMS)
PDF files can be viewed with the Acrobat® Reader®.