I take advantage of that by pretending its perfectly fine when i haul a tractor with a backhoe holding a big stump behind my Volvo. My trailer is in perfect nick, the 2.5 TDI takes off smoothly at the traffic lights so when i see the police looking at me in the line beside me, i just smile and greet with a nod. When they see im perfectly confident, they shrug and turn left without stopping me.
My record load was 5960kg gross combined, when the loader operator gave me a full bucket of topsoil with a grin when i asked for a half. It was only 3 miles home and i sure wont hit the freeway with that load, but 65-70kmh to avoid suspicion was no problem...