(truck length limits in EU maybe??),I've never seen a Peterbilt or a Kenworth in Europe. The only brand on both sides is Volvo, and even they make specific trucks for Europe and USA.
In France, I can confirm that a heavy freight truck is limited to 16.5 metres.https://www.legifrance.gouv.fr/affichCo ... e=20080531
And the trailer itself cannont exceed 12 metres between the pivot to attach the trailer, and the back of the trailer.
So goven those measurement, a truck for the French market cannot have a cab that is longer than 4.5 metres (but apparently there are european rules that reduce that to 2.5 metres).
For the brands, much like cars, and even more than cars, national regulations are more stringent.
Also, let's be clear : nobody in Europe own any non-metric tools, except the UK, probably. So that would cause problem for fixing them.
After WWII, there were Dodge (and other brands, but people called them Dodge, even if there was a big GMC on them:p ) trucks everywhere, but merely 10 years after, only professionnal mechanics or people skilled enough or with non metric tools kept them running.
My father said he was still seeing them way in the 80's.
Also, US trucks and European truck are probably buildt differently, in term of power and such (taxes on horsepower.) and simply from the need and use :
France and Texas. France is the largest (by land) country of the European Union, one of the biggest one of continental Europe behind Ukraine (and Russia if you count it).
You don't need to scale your truck the same for a smaller average travel.
In France, most tarffic would be handled by train, so there were no large trucks before the 1960's. If you look at a pic of a French highway of the time, you might see light trucks, but no freighter.https://youtu.be/WOVRPxtYay8https://youtu.be/P9SaGpDIxSk
(very typical of the traffic of the era! 6 toll booth for light vehicles, and only one for "vehicles with trailer and other vehicles".)
If you're curious, and look at older European trucks, you can see that up to the 70's, trucks used to have a standard "front engine", and that by the 70's, the engine creeped under the cab.