MIL-B-62152 Bus, Motor: Ambulance, Intercity, 40 Passenger, 6X2 Or 6X4This specification covers a six-wheel, four- or two-rear wheel drive, diesel engine driven, intercity type motor bus ambulance, having a seating capacity for 40 adult passengers for long distance transportation. The bus has features to allow ready conversion to accommodate 18 litter patients, the driver, and four seated attendants. Except for customized ambulance conversion features, vehicles procured under this specification are commercial items. Frame and all chassis components, heating and air conditioning equipment shall be commercially available items. The vehicle shall be warranted as specified in the procurement documents.

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MIL-B-62152A(AT)

3.2.5 Gross vehicle weight. The gross vehicle weight (GVW) shall be curb the combined

weight and payload weight. The payload shall be the weight of 40 passengers computed at

175 pounds per passenger plus 25 pounds baggage allowance per passenger.

3.2.6 Dimensions. Overall bus dimensions shall be as follows:

(a) Overall width shall not exceed 96 inches.

(b) Overall height shall be not greater than 138 inches.

(d) Ground clearance shall be not less than 7-3/4 inches under axles and not less than

10 inches under all other parts.

3.2.7 Ratings. Vehicle ratings shall be the manufacturer's published ratings. Component

and vehicular ratings shall not be raised to meet the requirements of this specification. When

published ratings are not available, verification of ratings must be submitted to the engineering

office of the procuring activity.

3.2.8 Accessibility. The design of the vehicle and optional equipment shall permit ready

accessibility for routine servicing and shall permit accessibility for replacement and adjustment of

component parts and accessories with minimal disturbance of other components and systems.

3.3 Performance.

3.3.1 Speeds. High and low speed requirements shall be met with the bus loaded to

specified GVW.

3.3.1.1 High speed gradeability. The bus shall ascend a 0.5 percent grade at 60 mph.

Gradeability shall be verified with calculations in accordance with SAE J688 (see 6.3). When air

conditioning is specified and powered by the main engine, the full load of the air conditioner

shall be deducted in gradeability calculations.

3.3.1.2 Low speed. Low speed shall be calculated with engine operating at not less than

35 percent of recommended governed speed, and shall provide a vehicle speed not greater than

6.5 mph.

3.3.1.3 Maximum geared speed. The maximum geared speed at engine governed speed

shall be not less than 68 mph. Conformance to geared speed specified shall be determined by

calculating in accordance with the following formula:

Maximum geared speed (mph)=

Governed speed (rpm)___________

Total gear reduction x tire factor (see 6.3)