The Professional Truck Driver Institute added SAGE Technical Services in Missoula, Mont., to the list of North American truck driver training schools offering PTDI-certified courses.

SAGE Technical Services offers two PTDI-certified programs in Montana: The Billings campus has had PTDI program certification since early 1990s, and the Missoula campus recently received initial certification. York County is a public school offering adult education, including a truck driver training program that is 10 to 12 weeks long.