Section 2335-A. Prohibition of rate increases for persons involved in emergency use of vehicles

No  insurer  authorized  to  transact  or  transacting  business  in this state, or controlling or controlled by or
  under common control by or with an insurer  authorized  to  transact  or
  transacting business in this state, which sells a policy providing motor
  vehicle  liability  insurance  coverage in this state shall increase the
  policy premium in connection with the insurance permitted or required by
  this chapter  solely  because  the  insured  or  any  other  person  who
  customarily  operates  an  automobile  covered  by the policy has had an
  accident while operating a motor vehicle in response  to  an  emergency,
  where  the  insured was either responding to a call to duty as a paid or
  volunteer member of any police or fire department or first aid squad; or
  was performing any other function on behalf of the state, any  political
  subdivision  thereof, a public authority, public benefit corporation, or
  any other governmental agency or instrumentality in a public emergency.