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THOUGHT LEADER


A BUS DRIVER’S BUS  Entrance door and window area designed for maximum visibility  Engineered for easy maneuverability, comfort and operation


AERODYNAMIC  Signature aerodynamic design improves fuel efficiency  Trans Tech buses go further on a gallon of gas


UNMATCHED VERSATILITY


 Versa-Track seating system provides maximum versatility and safety


 Flat-floor option is perfect for wheelchair access


BUILT TO LAST  14 gauge galvanized steel pan-formed floors increase strength and resist corrosion


 Bolted safety-cage provides enhanced crash protection


PEACE OF MIND  Best in class 3-year 60,000 mile warranty protects your investment  Altoona Tested for Safety and Durability


Fuel Choice Impact Will Be Felt Soon


Written By Robert T. Pudlewski M


odel-year 2021 school buses will be on the road about a year and a half from now. These will be the first me- dium-chassis school buses that are


covered by the second phase of a comprehensive set of standards that the U.S. Environmental Protection Agency and National Highway Traffic Safety Admin- istration jointly adopted, to help reduce greenhouse gas (GHG) emissions and improve fuel efficiency. Those rules will change the way student transport- ers spec new vehicles. Finalized in August 2016, the second phase of the rule


builds on Phase 1 regulations. The rule increases the stringency of engine and vehicle modifications to lower carbon dioxide (CO2) standards in model years 2021, 2024 and 2027.


By 2027, the new standards will have reduced CO2


emissions and fuel consumption, compared to 2018’s Phase 1, by up to 24 percent for school bus types C and D (vocational vehicles), and up to 16 percent for heavy-duty pickup trucks and vans that are used in type A conversions. These are milestone achievements. The regulation requires certification at vehicle and engine levels. To meet the Phase 2 regulations, manufacturers will need to integrate the right com- bination of technologies across the entire vehicle. That means that beginning in 2021 and extend-


ing through 2027, school bus suppliers will have to control either the option mix that the customers select, or the GHG reduction impact number for the options that they could potentially select. Under the worst-case scenario, OEMs could require that certain options be selected on a vehicle—even if the cus- tomer doesn’t want them—to properly certify their products with the respective regulatory agencies.


The Engine OEMs will be working to improve combustion


efficiency, as well as the gas exchange process (how efficiently the bus intakes outside air into the combus- tion chamber and emits it). Think of advancements


44 School Transportation News • JULY 2019


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