Until recently, diesel fuel was associated with school buses that were loud, dirty and smelled bad. Over the past several years, diesel has become cleaner, though certain myths still exist about its true environmental impact. School buses provide reliable transportation for millions of American students each day, so it’s no wonder that parents and school administrators worry about how diesel fuel affects health.

Until recently, diesel fuel was associated with school buses that were loud, dirty and smelled bad. Over the past several years, diesel has become cleaner, though certain myths still exist about its true environmental impact. School buses provide reliable transportation for millions of American students each day, so it’s no wonder that parents and school administrators worry about how diesel fuel affects health.