Trailer support (international speed limit differences)

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/request-a-feature/trailer-support/
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When I am driving with a trailer on an international route the speed limits vary throughout Europe.

In my case: traveling from Holland to Italy is possible via Germany (80km/h) and via France (130km/h)

The navigation tool chooses the German route as the fastest one, but that may differ while the German speed limit for cars without a trailer is taken in to account.