1. (a) Side intrusion test.

   1. (1)

      1. (A) The bus body shall be constructed to withstand an intrusion force equal to the curb weight of the vehicle, but shall not exceed twenty thousand pounds (20,000 lbs.), whichever is less.
      2. (B) Each vehicle shall be capable of meeting this requirement when tested in accordance with the procedures set forth below.
   2. (2) The complete body structure, or representative seven-body section mock-up with seats installed, shall be load-tested at a location twenty-four inches (24”) plus or minus two inches (2”) above the floor line, with a maximum ten-inch diameter cylinder, forty-eight inches (48”) long, mounted in a horizontal plane.

   3. (3)

      1. (A) The cylinder shall be placed as close as practical to the midpoint of the tested structure, spanning two (2) internal vertical structural members.
      2. (B) The cylinder shall be statically loaded to the required force of curb weight or twenty thousand pounds (20,000 lbs.), whichever is less, in a horizontal plane with the load applied from the exterior toward the interior of the test structure.
      3. (C) Once the minimum load has been applied, the penetration of the loading cylinder into the passenger compartment shall not exceed a maximum of ten inches (10”) from its original point of contact.
      4. (D)

2. (i) There can be no separation of lapped panels or construction joints.

   1. (ii) Punctures, tears, or brakes in the external panels are acceptable but are not permitted on any adjacent interior panel.

3. (b) Kentucky Pole Test.

   1. (1) The Kentucky Pole Test shall be required on or before the acceptance date of the first bus of the respective configuration.

   2. (2) Test procedure.

      1. (A) The body shall be impacted at any point along the roof line on the outside surface, using an eight-inch diameter cylinder, forty-eight inches (48”) long at a thirty-to forty-five-degree angle, one inch (1”) to three inches (3”) above the top window line.
      2. (B) The cylinder shall impact the roofline with the forty-eight inches (48”) dimension in a vertical plane with a force not to exceed ten inches (10”) maximum to eight inches (8”) minimum penetration of the body panels into the passenger compartment after impact.

   3. (3) The manufacturer shall submit all appropriate certification information.

      1. (c) Colorado Rack Test.
   4. (1) The Colorado Racking Test shall be required on or before the acceptance of the respective configuration.

   5. (2) Test procedure.

      1. (A) A diagonal (racking) load test shall be performed on Type A, Type B, and Type C, and Type D school buses to ensure adequate shear stiffness and strength of the bus body.
      2. (B) In addition to complying with the test procedures described in FMVSS 220, the body manufacturers shall record and report the downward vertical movement of the force at zero percent (0%), twenty-five percent (25%), fifty percent (50%), and one hundred percent (100%) of the maximum force (both loading and unloading).

      3. (C) Each emergency exit of the vehicle provided in accordance with FMVSS 217 shall be capable of operation as specified in that standard:

         1. (i) During the full application of the force; and
         2. (ii) After the release of the force.
      4. (D) Complete testing requirements of the Colorado Racking Load Test are available upon request from the Division of Elementary and Secondary Education.

   6. (3) School bus body manufacturers shall:

      1. (A) Record and report to the division the Colorado Racking Load Test results; and

      2. (B) Specify which testing method was used.

         1. (d) Body companies shall certify compliance with all test requirements, including test results, if requested.
4. (e) Construction shall be reasonably dust-proof and watertight.

Codification Notes: “FMVSS” means Federal Motor Vehicle Safety Standards.