The darker one is your route. The brighter one on the left is the Garmin's best guess at your route based on the maps that are active. If you know your route is good, generally stick to it.
Sometimes you might take a wrong turn and it will try to get you back onto your route, in which case it'll also be the brighter "Garmin pink" thing.
Thanks for that. I don't get why Garmin just doesn't send me on my route. In this case it's telling me to ride in the car lane instead of the separate bike lane next to it.
It's because you have TBT directions turned on. In that case Garmin has to recreate your route using its internal maps to work out where the turns are. So that it can direct you in the wrong direction...
The darker one is your route. The brighter one on the left is the Garmin's best guess at your route based on the maps that are active. If you know your route is good, generally stick to it.
Sometimes you might take a wrong turn and it will try to get you back onto your route, in which case it'll also be the brighter "Garmin pink" thing.