A number of Minnesota's schools are making changes to their school buses.And as News 12's Sara Miles tells us in the end, it should significantly decrease the environmental impact of bus operations while creating a green fleet.Every day, Minnesota students use buses to get to and from school...((we use them everyday))And GFW's Transportation Director Mike Johnson is the one to drive them... but after doing the job for over 30 years he knows that the air inside and around school buses can be up to five times more polluted...GFW's Transportation Director Mike Johnson says, "exhausts from diesel engines cause problems for children with asthma and things and that they had this project to clean up the air somewhat."((SU)) diesel vehicles like school buses account for about 10 percent of vehicles on Minnesota's roadways but account for more than 50 percent of traffic related air pollution. Now by retrofitting with one of the new exhausts it can reduce that air pollution by 30 to 50 percent per vehicle.((nats))It's made possible by Clean Energy Resource Teams and Project Green Fleet.Equipment manufacturers install a stainless steel muffler with an oxidation catalyst as well as a filtration system at no cost to the fleets or the districts.Johnson says, "that saved us about 2,500 dollars."Money that, GFW's Superintendent says can instead go back to the school system.GFW's Superintendent Dr. Steve Malone says, "Spend less money on energy that makes more programs available for students."Benefiting students inside the school while benefiting students that ride the bus.Johnson says, "a lot of times in a group maybe by a school, and then idles a little bit so it cuts down on your total exhaust emissions and it's cleaner going down the road."A cleaner road Johnson wouldn't mind traveling.In Fairfax, SM, News 12For more information on Project Green Fleet visit our website and click on featured links.