Highway Advisory Radio

Highway Advisory Radio (HAR) Systems from MH Corbin utilizes common radio frequencies to broadcast messages to motorists. Informing drivers before they encounter delays and add to traffic problems is important for maintaining a safe driving environment. 

And since AM radio is a standard feature in nearly all vehicles, using HAR is a very reliable way to get messages to the motoring public. 

HAR Systems allow DOT and other authorized personnel to notify motorists of traffic conditions, local points of interest, or emergency information, to create a safer commute. HAR Systems can also assist in managing traffic during long-term construction projects. 

Quick Facts

  • Utilizes AM/FM radio, a standard in nearly all vehicles • Information available to the public 24/7
  • Reliable communications when other forms of communication may not be working
  • Modular design provides structure allows upgrades as to build the system with low upfront costs
  • Designed for permanent or portable systems



  • Broadcasts messages to motorists in a 3 to 5 mile radius
  • Messages can be changed remotely by phone or through software
  • Robust design, including built-in lightning suppression

Technical Specifications

Technical Data

AC Power Options 120 V with or without battery backup
DC Power Options 12 V solar with battery backup 530
Ground System Triad, radial, or custom
Power Output Adjustable
GPS Receives GPS input for synchronization
Antenna Class 4 or 5 (49.2 ft max height)

Performance Data

Broadcast Range 6-10 km / 3-5 miles
Broadcast Frequency Range 530 – 1700kHz
Recording Time 80 min.
Access Control Local, DTMF, VoIP, Internet
Transmitter 10 W approved FCC part 90.242

Enclosure Data

Enclosure NEMA 3R Weatherproof encl. Pad mounted Model 334 cabinet 180 amp AMG Battery Backup
Operating Temp -40°C to +80°C (-40°F to +180°F)

Get in touch

Technical Support

US Toll-Free: (800) 380 1718
+1 (614) 873 5216

Contact MH Corbin

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