Boyer, Kenneth D.; Burks, Stephen V. - Forschungsinstitut zur Zukunft der Arbeit <Bonn> - 2007
Mirroring the railroad industry of the 1940s and 1950s, the trucking industry today appearsto be achieving impressive productivity gains. But it is easy to confuse true productivityadvances in transportation industries with changes in ton-miles per unit of input that are duesimply to changes...