Re: truck V 870_3421 dartford tunnel, that old chestnut
I've sorted it. I know you have to alter the 7.5tonne weight limit as the map can't differentiate between the two lanes. The problem for me was that although I would make changes to the map, the changes simply wouldn't save. The reason for this is I installed the map straight onto my SD card via the SD slot on my laptop rather than installing it via my tomtom device. I installed the map again this time connecting my device rather than straight to the card. All sorted now.