Uniformity of interpretation - definitions, MCA (mt.gov)) of a definition of what Montana considers an authorized emergency vehicle. I found Montana code 61-8-102, which provides a definition. Horns, security alarms, and warning devices, MCA (mt.gov)) Montana vehicle code 61-9-401 'Horns, Security Alarms, and Warning Devices' describes the conditions for use of a siren as this. Blinker-type or revolving red light on certain private vehicles - use - identification card, MCA (mt.gov))
Montana vehicle code 61-9-227 seems to imply that not having a siren is what differentiates a volunteer firefighter's POV from an authorized emergency vehicle.
Back from another long hiatus from the forums to give my interpretation of Montana statutes, cause I'm weird.
