Gaviota Coast Wind Safety Project
Highway Advisory Radio System (HARS)
HARS - Highway Advisory Radio System
The California Caltrans Emergency Highway Advisory Radio System (HARS) is broadcasted on 1610 AM which is available in most vehicles as a standardized radio station frequency that is accessible for the public.
The use of highway advisory radios and permanent or portable message signs will inform motorists of hazardous weather and traffic problems.
This system first uses atmospheric weather sensors that communicates using computer software that analyzes the data and, when conditions warrant, sends a message to the HARs and portable message signs along the roadway. The highway advisory radio and portable message signs automatically update, in real-time, to provide hazardous weather and traffic conditions to motorists.
The HARS system utilizes AM radio frequencies to broadcast messages to motorists within a four to six-mile radius. The system is typically used to notify motorists of traffic conditions, local points of interest, or emergency and evacuation information. Messages can be changed remotely by touch-tone telephone or computer.
The system is energy-efficient, easy to operate and can be installed virtually anywhere when used with solar-powered components and cellular phone communications.
The system can be installed as a single unit or as a network of GPS synchronized systems that can be operated from one or more control points. It is simple to record comprehensive messages and allow motorists to receive constant updates throughout your area and beyond.
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Website Updated August 3, 2006
