Specifications include, but are not limited to: CHASSIS - 2019 Freightliner M2 OR EQUAL 2019 or current model in production. New and un-used. For safety, service, parts availability, etc the chassis shall be of a commercially available conventional cab type configuration (Freightliner M2 or equal). A purpose built chassis manufactured by the sweeper company will not be acceptable. Gross Vehicle Weight Rating (GVWR) shall be not less than 33,000 pounds. The wheelbase shall not exceed 136 inches; cab-to-axle shall be 70 in. Overall length not to exceed 268 inches. Outside width in transport mode not to exceed 8’. Overall height not to exceed 9' Manufacturer shall certify that pass-by noise level at 50 feet (per SAE J 1077) while sweeping, does not exceed 79 dB(A). Front axle shall be an I-beam type, 68" track; with a minimum capacity of 10,000 lbs. Front axle shall have leaf spring suspension and shock absorbers as standard equipment to avoid high stress areas and cracking of the chassis. Rear axle shall have a minimum capacity of 23,000 lbs. Rear suspension shall be provided through a twin air spring suspension system having a minimum capacity of 23,000 pounds. One- (1) 50-gallon aluminum fuel tank shall be shared by both engines and shall be easily accessible without raising or shifting any components. A fuel gauge, in cab, shall be supplied. Sight tube is not acceptable. Full upon delivery. Air compressor shall be 18.7 CFM. Chassis shall be capable of safely propelling the sweeper, loaded to the maximum GVWR, under all normal sweeping and transport conditions. CHASSIS ENGINE: Yes No Offered Diesel engine shall be an electronic inline 6 cylinder, turbocharged, 507 cubic inch displacement. The engine shall supply power for propulsion and sweeper functions. Horsepower rating shall be 260 HP @ 2200 RPM. Torque rating shall be 720 ft-lbs. @ 1300 RPM. Truck engine shall be equipped with a single vertical exhaust system. The cooling system shall be protected to -34 F. Engine shall be equipped with a single stage, dual element dry-type air cleaner, spin-on fuel filter, full flow oil filter, and fuel water separator. Diesel emissions shall be current EPA certified with on-board diagnostics (OBD), and have a minimum capacity of 6 U.S. gallons diesel emissions fluid. Full upon delivery. Radiator fan shall utilize a clutch type drive. Direct drive fans shall not be acceptable. TRANSMISSION, AXLES, WHEELS & BRAKES: Yes No Offered Automatic transmission shall have five forward speeds and one reverse. (Allison 3500RDS or equal). Two-speed rear axle shall have a 6.17/8.42 ratio. An auxiliary transmission for sweeping is not acceptable. Front axle shall be an I-beam type, 68" track; with a minimum capacity of 10,000 lbs. Front axle shall have leaf spring suspension and shock absorbers as standard equipment to avoid high stress areas and cracking of the chassis. Rear suspension shall be provided through a twin air spring suspension system having a minimum capacity of 23,000 pounds. Air compressor shall be 18.7 CFM.