Well we need a good Sat Nav for our journeys in the UK & Europe, one that works using specific vehicles dimensions, height, weight, and width and this Garmin model fits the bill.
Bought this one from eBay, brand new still in the box, never been used for £259.50 including P & P in July 2017.
A large colour 7″ screen, Cathy can see it from her seat easily enough as well!
When you exceed the speed limit the mph display turns red, mobile speed trap warnings, displays motorways lanes you should be in, especially useful where motorways merge across 4 or 5 lanes. Plus it is pre-loaded with ACSI camp sites data base.
It is positioned close the reversing camera, we are pleased with it so far.