CARB Certifies Next-Generation Propane Engine in Blue Bird School Buses to Lowest NOx in Market
STN
ROUSH CleanTech is the first original equipment manufacturer to receive California Air Resources Board’s 0.02 grams per brake horsepower-hour certification for 2022 model year vehicles. The optional ultra-low CARB certification is 90% cleaner than current emissions standards for nitrogen oxides. The new engine certification covers ROUSH CleanTech Gen 5 propane engines for Blue Bird school buses.
