N.Y. VAT. LAW § 549 : NY Code - Section 549: Cancellation of an escort certificate

Search N.Y. VAT. LAW § 549 : NY Code - Section 549: Cancellation of an escort certificate

An escort certificate
  shall be cancelled by  the  commissioner  if  such  person's  underlying
  driver's   license   has  expired,  is  revoked  or  suspended  or  upon
  notification by the commissioner of transportation or the New York state
  thruway authority that the person has violated any rule or regulation of
  the commissioner  of  transportation  or  the  New  York  state  thruway
  authority  governing the operation, use and equipment of escort vehicles
  and the duties  and  responsibilities  of  the  operator  of  an  escort
  vehicle.