Specifications include, but are not limited to: Bus Length For ease of use, the following tolerances will be allowable for each given bus length. Bus length is determined as the measurement from bumper to bumper. • 35 ft bus: 35 ft to 36 ft, 3 in. • 40 ft bus: 40 ft to 41 ft, Bus Width Transit Coach Body width shall be 102 in. (+0, -1 in.). Bus Height Maximum overall height (with CNG tank access doors closed) shall be 133 in., including all rigid, roof-mounted items such as A/C, exhaust, fuel system and cover, etc. Step Height Transit Coach The step height shall not exceed 14 in. at either doorway without kneeling. A maximum of two steps are allowed to accommodate a raised aisle floor in the rear of the bus. Underbody Clearance The bus shall maintain the minimum clearance dimensions as defined and shown in Figure 2 of SAE Standard J689, regardless of load up to the gross vehicle weight rating.