Section 145-D. Definition of snow tire

Snow tires shall include tires in
  which the ply cords extending to the beads are nearly at right angles to
  the center line of the tread commonly referred to as  radial  tires  and
  the  commissioner  shall  promulgate  rules and regulations defining the
  term snow tire with respect to non-radial tires. No person  whose  motor
  vehicle  is  equipped  with  radial  tires or tires which conform to the
  definition promulgated by the commissioner shall  be  prosecuted  for  a
  violation  of  any  local  law or ordinance requiring the equipping of a
  motor vehicle with  snow  tires  during  any  period  of  declared  snow
  emergency.