What is the maximum speed you may drive on a main road in a truck with a gross vehicle weight rating of 5.5 t and a trail with a gross vehicle weight rating of 2 t?

For a truck with a gross vehicle weight rating (GVWR) over 3.5 t and up to 7.5 t, when pulling a trailer, the maximum permitted speed on main roads—not including motorways (Autobahnen) or similar roads—is 60 km/h according to German traffic regulations (Straßenverkehrs-Ordnung, StVO). This rule applies regardless of whether the trailer is light or heavy, as long as the combined truck and trailer do not qualify for higher speed limits. Even if the truck has better braking systems or modern equipment, the speed limit does not increase in this scenario. Always remember to drive according to the weight class of your vehicle-plus-trailer combination. This ensures safety and compliance with the law when driving a truck with a trailer on main roads outside built-up areas in Germany.