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applicable to school buses. If lap belts are provided, the manufacturer must install an adequate number of lap belts to secure 8 portable child restraints. If the number of seats on the bus will not allow for eight (8) positions, the maximum number possible shall be installed. A school bus ordered with activity style seats is exempt from this requirement. This requirement shall not reduce the seating capacity of the school bus.

(Note: FMVSS 225, General Exceptions excludes school buses from the tether anchorage requirements. Tether anchorages are not required nor prohibited by this specification for any size school bus.) The non-adjustable end shall be on the aisle side and not extend more than 2 inches out of the bight of the seat.

Seat Cushions: The base shall be nominal 15/32" thick, Exposure 1, APA Rated Sheathing C-D plywood with exterior grade glue, identification (span) index 32/16, manufactured in conformance with Voluntary Product Standard PS1-95, PRP 108, PS2- 92 and identified as to veneer grade and glue bond type by the trademarks of an approved testing agency, or equivalent. The foam cushions shall be solid or molded polyurethane foam conforming to ASTM D 3574. Upholstery: All seat cushion surfaces shall be covered with a vinyl resin-coated upholstering material. All restraining barriers and passenger seats shall be constructed with materials that enable them to meet the criteria contained in the School Bus Seat Upholstery Fire Block Test. (See Appendix B, of National School Transportation Specifications and Procedures)


The service door shall be in the driver’s control, designed to afford easy release and to provide a positive latching device on manual operating doors to prevent accidental opening. When a handle lever is used, no part shall come together that will shear or crush fingers. Manual door controls shall not require more than twenty-five pounds (25 lbs) of force to operate at any point throughout the range of operation, as tested on a 10 percent grade both uphill and downhill.

  • A.

    The service door shall be located on the right side of the bus, opposite and within direct view of the driver.

  • B.

    The service door shall have a minimum horizontal opening of twenty-four inches (24") and a minimum vertical opening of sixty-eight (68") (for Type A) and seventy-two (72") (for Types C, & D).

  • C.

    Service door shall open outward.

  • D.

    All door panels shall be of approved safety glass. The bottom of each lower glass panel shall not be more than ten inches from the top surface of the bottom step. The top of each upper glass panel shall not be more than three inches (3") from the top of the door.

  • E.

    Vertical closing edges on entrance doors shall be equipped with flexible material to protect children’s fingers.

  • F.

    All doors shall be equipped with padding at the top edge of each door opening. Padding shall be at least three inches (3") wide and one-inch (1") thick and extend the full width of the door opening.

Section C-14

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