Blue Bird first to offer certified ultra-low NOx level for propane school buses; 0.02 g/bhp-hr
Green Car Congress
AUGUST 15, 2018
Blue Bird is providing the cleanest propane engine available for school buses on the market, with this version being 90% cleaner than the current emissions standard and 10 times cleaner than any non-Blue Bird propane school bus option available today. emission designation. emission designation.
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