If lanes are seperated by dotted lines, then those are not the dotted lines they refer to for the pelotonline.
If you look closely at the tiles then you will see that in some (most?) corners cells will have some dots inside a lane. Those are the dots that you are required to follow.
In case there are no dots, you can chose where to place the peloton, but you have to make sure the peloton can follow the next turn according to the dots in case there are any ....
Thank you so much. You've answered my question perfectly. I was getting confused with the white dotted lines which seperate lanes. The rules refer to black dashes clearly marked within certain track spaces (usually corners).
This one has puzzled me for weeks. A thousand thank-yous.