Section 20. Roadside rest areas

1. The commissioner of transportation is
  hereby authorized and empowered to acquire roadside  sites  along  state
  highways  and  to  develop  roadside  rest  areas.  The commissioner may
  utilize for this purpose suitable lands  already  owned  by  the  state,
  except  that  use  of any such lands in the forest preserve or under the
  jurisdiction of the department of environmental conservation shall first
  be approved by the commissioner of environmental  conservation  and  the
  use  of  any  lands  under  the  jurisdiction of the office of parks and
  recreation shall first be approved by  the  commissioner  of  parks  and
  recreation.
    2.  Such  sites  shall  be  so  located as to give convenient and safe
  access thereto by vehicular traffic and shall be chosen with regard both
  to the roadside rest and recreational needs of the traveling public  and
  suitability for the purpose.
    3.  The  commissioner  may  in  his  discretion  develop such sites by
  providing any  or  all  of  the  following:  a  water  supply,  sanitary
  facilities,  parking  space for automobiles or such other non-commercial
  facilities as are suitable for rest  and  relaxation  stops  by  highway
  travelers.  The commissioner may also permit the installation of vending
  machines dispensing such food, drink and  other  articles  as  he  deems
  appropriate  or  desirable.    Such  sites  shall be suitably marked and
  markings indicating their location may be erected  on  highways  leading
  thereto.
    4.  At  the  discretion  of  the  commissioner  such rest areas may be
  maintained by state expenses from any appropriation for the  maintenance
  of  state  highways,  or he may enter into agreement with any authorized
  municipality for the maintenance by the municipality of such a  roadside
  rest  area  for such period and in accordance with such standards as may
  be agreed upon.