Guard lines shall be established by the commissioner or his or her designated representative in charge at the various juvenile detention centers and youth development centers in the same manner that land
lines are established, except that, at each corner of the lines, signs must be used on which shall be plainly stamped or written: “Guard line of __.” Signs shall also be placed at all entrances and exits for vehicles and pedestrians at the institutions and at such intervals along the guard lines as will reasonably place all persons approaching the
guard lines on notice of the location of the institutions.