Williamson Fire Rescue says HAAS system will send emergency-vehicle locations to mapping apps to alert drivers

Mar 5, 2026

Williamson Fire Rescue, in partnership with the Tennessee Highway Safety Office, has installed HAAS technology that transmits emergency-vehicle location and direction to supported navigation platforms. The agency said the alerts are free to the public and aim to counter quieter, more soundproof vehicles that reduce siren effectiveness.

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Williamson Fire Rescue announced it has installed HAAS, a system that transmits the location and direction of travel of emergency vehicles to supported navigation platforms to help alert nearby drivers. An agency official with Williamson Fire Rescue said the move is intended to address the reduced effectiveness of sirens as newer vehicles become more soundproof.

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