Ryan Gray

Ryan Gray

Ryan Gray has served as editor-in-chief of School Transportation News since October 2007. He is also the content and educational director for the North American School Bus EXPO, and the Transporting Students with Disabilities and Preschoolers National Conference, and is the chief content officer for parent company STN Media Group.

Website URL: http://https://www.linkedin.com/profile/view?id=777894

Blue Bird Propane School Bus Certified as Ultra-Low NOx

The U.S. EPA and California Air Resources Board recently signed off on the Blue Bird Vision Propane school bus that is powered by a ROUSH CleanTech propane autogas fuel injection system and Ford 6.8L engine. They emit only 0.02 grams per brake horsepower hour, the lowest levels of oxides of nitrogen (NOx) available from any Class 4 through 7 propane vehicle.

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High Resistance to Low Rolling Resistant Tires

Low rolling resistant tires, or LRRTs, were first developed for the over-the-road trucking industry in response to increased federal scrutiny over corporate average fuel economy for commercial vehicles. So why aren’t more school buses using them?