(1) Sirens or blue or blue and white signal lamps, or a combination of these, may be authorized for all law enforcement vehicles owned or leased by a law enforcement agency, a certified law enforcement officer, or the Vermont Criminal Justice Training Council. If the applicant is a constable, the application shall be accompanied by a certification by the town clerk that the applicant is the duly elected or appointed constable and attesting that the town has not voted to limit the constable's authority to engage in enforcement activities under 24 V.S.A. § 1936a.

(2) Sirens and red or red and white signal lamps may be authorized for all ambulances, fire apparatus, vehicles used solely in rescue operations, or vehicles owned or leased by, or provided to, volunteer firefighters and voluntary rescue squad members, including a vehicle owned by a volunteer's employer when the volunteer has the written authorization of the employer to use the vehicle for emergency fire or rescue activities.

(3) No vehicle may be authorized a permit for more than one of the combinations described in subdivisions (1) and (2) of this subsection.

(4) No motor vehicle, other than one owned by the applicant, shall be issued a permit until the Commissioner has recorded the information regarding both the owner of the vehicle and the applicant for the permit.

(5) Upon application to the Commissioner, the Commissioner may issue a single permit for all the vehicles owned or leased by the applicant.

(6) Sirens and red or red and white signal lamps, or sirens and blue or blue and white signal lamps, may be authorized for restored emergency or enforcement vehicles used for exhibition purposes. Sirens and lamps authorized under this subdivision may only be activated during an exhibition, such as a car show or parade.