Freightliner Business Class (FL-Series)

The Freightliner Business Class (FL-Series) is a range of medium-duty (Class 5–8) trucks that was assembled by the American manufacturer Freightliner Trucks from 1991 to 2007. The first medium-duty trucks sold by the company, the FL60/FL70 replaced the Mercedes-Benz L-series trucks which were withdrawn from the United States market during 1991. The Business Class range was sold as both a straight truck and a semitractor. During the late 1990s, the Business Class would become popular in bus applications, in both cowled-chassis (school bus) and cutaway-cab configurations.

In 2001, Freightliner introduced the Freightliner Business Class M2 as the second-generation Business Class, selling variants of the FL-Series concurrently through 2007.