Beginning in the early 2000s, the rail industry was introduced to something not seen before, new-build six-axle locomotive ...

Mack Trucks has expanded its MD Series line with a new 23,000-lb. rear axle offering and a 325 hp engine rating. Mack says the move expands its ...

Audi doesn't detail its high-riding contraption, but it does say the portal axles represent a new development. Photo by: Audi Portal axles on a production vehicle are quite rare. Mercedes has the ...