The National Tractor Trailer School (NTTS) of Liverpool, NY, is celebrating 40 years of operation this year. Since opening its doors in May 1971, over 20,000 men and women have trained to become heavy truck and tractor-trailer drivers.

Originally founded in Newburgh, NY, by the duo of Harry Kowalchyk and William Mocarski with one “B” Model 1961 Mack tractor, NTTS relocated to its present location in 1998, with Kowalchyk still serving as president today.