TomTom is a pile of crap for actually navigating.
I will have it on and running most of the time as it’s a good display and accurate speed and live traffic and it’s nice to have a map view of the bends ahead.
Never follow it for directions off the motorway without checking first though. It tries to send you down some ridiculous routes, totally unsuitable for any truck let alone an artic.
The past few days it has decided it doesn’t like the main road that runs to our yard, and has been trying to make a u turn round a tiny row of terraced houses and down the ginnel behind it, (barely get a car down there) and then off on a 10 mile diversion round the town to approach from the other direction.
It’s no surprise some of the disasters you see if people are blindly following this.
I use a combination of Scania nav, Google, paper map and eyes/common sense