It could simply be that when you are setting out on a route, the TomTom thinks you (well, the car) is facing a direction other than it is, therefore the unit is telling you to turn around to start your travel when you really don't have to.
As far as the markings on the road? Perhaps it's the colour scheme selected for the map. sorry, I'm particularly thick these days so I'm not visualizing what you're seeing.
But........you can do a screen capture and show it here.
Here's how: use Explorer and make a folder in your unit called screen. Lower case, no quotes or anything. Now then, within that folder, make a text file simply called capture, no extension, nothing in the text file.
When you want to 'grab' a screenshot, just press the screen in the top left; you'll hear a 'click' sound like a shutter.
In the screen folder, you'll find a jpeg file with a weird name. That's your shot captured. You can make as many as you want.
