Trans 300.63(7)(7) Each school bus shall be equipped with a grab handle at least 10 inches in length, located inside the service door entrance for providing assistance to enter or leave the bus.

Trans 300.63 HistoryHistory: Cr. Register, February, 1983, No. 326, eff. 3-1-83; am. (2), (6), (7), Register, February, 1995, No. 470, eff. 3-1-95; am. (1), (2) and (5), Register, December, 1997, No. 504, eff. 1-1-98.

Trans 300.64(1)(1) A stop signal arm which meets FMVSS 131 and SAE J1133 is required on every school bus painted with the yellow and black color scheme. The stop signal arm may not be extended until the bus is completely stopped.

Trans 300.64(2)(2) The stop signal arm shall be installed in such a manner that it cannot be activated unless the alternately flashing red lamps are in operation.

Trans 300.64(3)(a)(a) It shall be a metal, or material with strength at least equivalent to all-steel, as certified by the bus body manufacturer, octagon-shaped sign at least 18 inches wide and 18 inches long exclusive of the mounting bracket. All sheet metal parts shall be 16 gauge or heavier.

Trans 300.64(3)(b)(b) It shall have the word “STOP” on both sides in white letters at least 6 inches high and 7/8 inch wide on a bright red background. The outer edge shall have a white border at least 1⁄2 inch wide. All other parts of the assembly shall be painted black.

Trans 300.64(3)(c)(c) It shall be equipped with 2, 4–inch or larger, double faced alternating flashing red lamps to be mounted near the perimeter of the sign with a minimum of 12 inches spacing between lamp centers. These lamps shall be wired to the circuit of the flashing red warning lamps mounted on the front and rear of the bus. These lamps may be strobe lamps or light emitting diodes. In lieu of the 2 double faced alternating flashing red lamps, the stop signal arm may be equipped with red flashing, high visibility light–emitting diodes incorporated into the word “STOP,” in accordance with the requirements of sub. (3) (b).

Trans 300.64(5)(5) The stop signal arm shall be mounted on the left side of bus as close to the driver’s window as practicable.

Trans 300.64(6)(6) The requirements of this section for the operation of the stop signal arm does not apply to school buses which are operated only in areas where use of the flashing red warning lights is not permitted.

Trans 300.64 HistoryHistory: Cr. Register, February, 1983, No. 326, eff. 3-1-83; am. (1), (3) (c), (6), Register, February, 1995, No. 470, eff. 3-1-95; emerg. am. (3) (a) and (c), eff. 7-1-97; am. (1), (2) (3) (a), (c) and (6), Register, December, 1997, No. 504, eff. 1-1-98; CR 03-116: am. (2) and (3) (c) Register April 2004 No. 580, eff. 5-1-04.

Trans 300.65Trans 300.65 Sunshield. Each school bus shall have an interior sunshield installed above the windshield. Each type A-I, B, C or D bus shall have one of a size not less than 6 by 16 inches.

Trans 300.66(1)(a)(a) The suspension system shall comply with the requirements in 49 CFR 393.207. The bus shall be equipped with front and rear shock absorbers.

Trans 300.66(1)(b)(b) The shock absorbers shall be maintained free of leaks and all mountings shall be in good working order.

Trans 300.66(2)(2) A school bus may not be operated with any broken springleaf or worn, loose, mislocated shackles or “U” bolts.

Trans 300.66 HistoryHistory: Cr. Register, February, 1983, No. 326, eff. 3-1-83; renum. (1) to (3) to be (1) (a), (b) and (2) and am. (1) (a), Register, February, 1995, No. 470, eff. 3-1-95; am. (2), Register, December, 1997, No. 504, eff. 1-1-98.

Trans 300.67(1)(1) The front tires shall have tread depth of at least 4/32-inch and rear tires shall have tread depth of at least 2/32-inch around the entire periphery measured at 2 points no less than 15 inches apart in any major tread groove.

Trans 300.67(3)(3) A school bus may not be operated with cuts or chunks missing exposing the cord, recaps peeled loose or off, or showing an indication of ply separation.

Trans 300.67(4)(4) Tires of different size or ply rating may be used except that all tires on an axle must be the same size and type. Bias and radial tires may not be mixed.

Trans 300.67 HistoryHistory: Cr. Register, February, 1983, No. 326, eff. 3-1-83; am. (4), Register, February, 1995, No. 470, eff. 3-1-95; am. (2) and (3), Register, December, 1997, No. 504, eff. 1-1-98.