(a)

1. (1)

   1. (A) An adjustable split sash window shall be mounted inside of the bus body between each framing post.
   2. (B) Safety glass shall be set in an acceptable manner in a sturdy, extruded, or die-formed frame to provide adequate support for the glass.
   3. (C) A permanent mark showing the grade of glass shall be visible and glass shall be a minimum of one-eighth inch (1/8”) thick.

2. (2)

   1. (A) A minimum clear vertical opening of not less than nine inches (9”) shall be provided by lowering the top sash.
   2. (B) The bottom sash shall be stationary.
   3. (C) A movable window shall:

(i) Be controlled by an approved latch having finger-touch opener providing for ease of operation; and

1. (ii) Have a minimum of injury-prone projections.

   1. (D) Window latches must be replaceable or rebuildable without:

      1. (i) Disassembling the complete window frame; or
      2. (ii) Removing the window from the body.
   2. (E) Also, individual window latches or repair parts must be available and part numbers included in the required body parts catalog.
   3. (F) Window seals and visors or drip molding shall be installed and the unit shall provide ample protection from leakage in the hardest rain.

(b) For ventilation purposes, the driver's window shall be:

1. (1) Adjustable; and

2. (2) Equipped with a positive latch that can be secured from the inside of the bus.

   1. (c)

3. (1)

   1. (A) There shall be installed, in the rear door, two (2) windows (one (1) upper, one (1) lower) installed in a waterproof manner.
   2. (B) Glass shall be the same type as for side windows.

4. (2)

   1. (A) Rear side windows located at each side of the emergency door shall be installed in a waterproof manner.

   2. (B) The glass area shall be:

      1. (i) Large enough to provide desirable vision to the rear; and
      2. (ii) Of the same quality and grade as for side windows.