Trans 330.10(22)(f)(f) Push-type exit doors need not be equipped with sensitized edges if the door control mechanism is designed to do all the following: Trans 330.10(22)(f)1.1. Delay release of the brake interlock until after the doors are completely closed. Trans 330.10(22)(f)2.2. Prevent the doors from being unlocked by the driver’s door control while pressure is applied on the inside of the doors. Trans 330.10(22)(f)4.4. Illuminate a light above the door that indicates the door is unlocked and may be opened. Trans 330.10(22)(g)(g) The exit door may not be used when the motor bus is operated under contract as provided in s. 121.55 (1) (a) or (d), Stats., to transport pupils to or from a public or private school or is otherwise operated on a special route for the purpose of transporting pupils to or from public or private schools, except in an emergency. Trans 330.10(23)(23) Standee line or bar. A motor bus designed and constructed to allow standees shall conform to the marking and operation requirements under 49 CFR 393.90. Trans 330.10(24)(24) Steering. The steering system shall conform to the requirements under 49 CFR 393.209. The steering system shall be maintained in accordance with the manufacturer’s specifications. Trans 330.10(25)(a)(a) The first step at the front service door may not be more than 16 inches from the ground. Trans 330.10(25)(b)(b) The riser of any step may not be more than 15 inches in height. If there are 2 or more risers, each shall be approximately equal in height. Trans 330.10(25)(c)(c) Except for a retractable step that is extended when passengers enter or leave the motor bus, a step may not protrude beyond the widest part of the body. Trans 330.10(25)(f)(f) Any stepwell light designed to illuminate the steps automatically upon opening the service door shall be operational during the hours of darkness. Trans 330.10(25)(g)(g) Each motor bus shall be equipped with a grab handle at least 10 inches in length, located inside the front service door entrance, for assistance when entering or leaving the vehicle. Trans 330.10(26)(26) Sunshield. Each motor bus shall have an interior sunshield not less than 6 by 16 inches in size installed above the windshield in front of the driver’s seat. Trans 330.10(27)(27) Suspension system. In addition to the requirements under 49 CFR 393.207, all suspension parts, including mountings, shackles, U-bolts, airbags and all connecting air lines, shall be maintained in good working order. Trans 330.10(28)(28) Tires. In addition to the requirements for motor bus tires under 49 CFR 393.75, a motor bus may not be operated with tires of a different size on the same axle. Trans 330.10(30)(a)(a) All windows that open shall operate freely. Any side window latches shall be capable of holding the window securely in place in all positions. Trans 330.10(30)(b)(b) All exposed edges shall be banded or ground to eliminate sharp or rough areas. Trans 330.10(30)(c)(c) If an emergency window is originally equipped with an automatically operated, audible signal to indicate to the driver that the window is unlatched when the ignition is in the “on” position, no cut-off may be installed in the audible signal circuit. Trans 330.10(31)(a)(a) In addition to the requirements for windshield wipers under 49 CFR 393.78, the windshield wiper system shall have at least 2 speeds or a variable speed motor. Trans 330.10(31)(b)(b) If a motor bus is originally equipped with a windshield washer system that provides fluid for the windshield wipers to clean the windshield, the system shall be maintained in operational condition. Trans 330.10 HistoryHistory: Cr. Register, May, 1991, No. 425, eff. 6-1-91; CR 19-004: am. (3), (8), (30) (intro.) Register November 2019 No. 767, eff. 12-1-19; correction in (8), (30) (intro.) made under s. 35.17, Stats., Register November 2019 No. 767.