You still have separate speed limits from cars when driving a truck with and without a trailer.EvgenKo423 wrote:If yes, then it's unfair to have a speed limiter, because without a cargo a can go as fast as I want, just like a usual car.
In Germany there's a limit of 80 km/h (50 mph) for trucks over 3,500 kg.
Also, in Germany, trucks over 3,500 kg are required to have a built-in speed limiter for a maximum speed of 90 km/h (56 mph).
It's the same in many other countries in Europe.
So no, you can't "go as fast as you want" without a trailer. The limit is on the tractor itself and if you drive without a limiter in Germany you will be on the side of the road with police cars around you sooner or later, taking the bus/train home.
EDIT: Besides, in Russia the maximum speed you can go with a truck is 90 Km/h. I can't find if it differs with or without a trailer but why would you want to drive faster? The max speed limit for cars is 110 Km/h anyways, it's not like those 20 Km/h more is going to make a big difference besides your fuel economy.
How often do you bobtail anyways?