I have a C550 Streetpilot, I have updated the maps and have the latest versions installed. However the unit still insists on instructing me to follow roads that I kmow as a truck driver are unsuitable for my car/caravan outfit.
I have tried all the various options from car to truck, even set it to bus and taxi, but it is incapable of using Motorways first, then "A" then "B" roads ln that order. I have set all the avoidances within the setup but still it insists on prolonging my routes via minor roads. (Aberystwyth to Ellesmere Port) over the Snowdonia National Park.
Any help would be appreciated
WRDRJ