ยง  50-c.  Liability for negligent operation of certain vehicles in the
  performance of duty by police officers and paid firefighters.  1.  Every
  city,  town, village and fire district, notwithstanding any inconsistent
  provision of law, general, special or local or the limitation  contained
  in  the  provisions  of any city charter, shall be liable for, and shall
  assume the liability to the extent that it shall save harmless any  duly
  appointed police officers of the municipality or any duly appointed paid
  firefighters of the municipality or fire district for, the negligence of
  such  appointee in the operation of a vehicle upon the public streets or
  highways of the municipality or fire district  in  the  discharge  of  a
  statutory  duty  imposed  upon  such  appointee  or municipality or fire
  district, provided the appointee at the time of the accident, injury  or
  damages  complained  of,  was  acting  in  the performance of his or her
  duties and within the scope of his or her employment.
A police officer  of  a  municipality  or  a  paid  firefighter  of  a
  municipality  or  fire  district, although excused from official duty at
  the time, for the purposes of this section, shall be deemed to be acting
  in the discharge of duty  when  engaged  in  the  immediate  and  actual
  performance  of  a  public  duty  imposed  by  law  and such public duty
  performed was for the benefit of all the citizens of the  community  and
  the  municipality  or  fire  district  derived no special benefit in its
  corporate capacity.
No action or special proceeding instituted pursuant to the  provisions
  of  this section or section fifty-b of this article, shall be prosecuted
  or maintained against the  municipality,  fire  district  or  appointee,
  unless  notice  of  claim  shall have been made and served in compliance
  with section fifty-e  of  this  article.  Every  such  action  shall  be
  commenced pursuant to the provisions of section fifty-i of this article.
2.  The  provisions of this section shall not apply to the city of New
  York.
Structure New York Laws
Article 4 - Negligence and Malfeasance of Public Officers; Taxpayers' Remedies
50 - Cause of Action Not Barred.
50-A - Municipal Liability for Negligent Operation of Vehicles.
50-B - Municipal Liability for Negligent Operation of Vehicles or Other Facility of Transportation.
50-F - Recording of Notice of Claim.
50-G - Recording of Notice of Defect.
50-I - Presentation of Tort Claims; Commencement of Actions.
50-J - Liability of Police Officers for Negligence in the Performance of Duty.
50-J*2 - Civil Actions Against Correction Employees.
50-K - Civil Actions Against Employees of the City of New York.
50-L - Civil Actions Against Employees of the Nassau County Police Department.
51 - Prosecution of Officers for Illegal Acts.
52 - Liability Insurance for Officers and Employees.
53 - Alternative Service of Notice of Claim Upon the Secretary of State.