chrisdgallego

@Joachim_L
here is the white version - already have adjusted it and corrected it too.

Hey!
A stop is represented by a dot - and this is just a form with an outline, additionally these are symbols. This means you have one original dot and many linked objects to it. Facilitates if you have change bechause you only have to make in on the original and all the linked ones are updated.
I use always grids to place my objects on the art boards. That's very easy in Affinity Designer and helps a lot to keep the design clear and structured.
All the best
Chris

@transitdiagrams Hi.
I have a doubt that maybe someone already asked you and because of my English skills I could find or understand. So I'm sorry in advanced

Every stroke in your subway or train map has some stops represented by dots.

Are those dots shapes placed one by one or are they made in a different way like I did in illustrator but I don't really know how to recreate with AD?
I mean, can you do something like a custom shape and then "say" to a stroke "in every node of this stroke, replace them by this shape"?
If so, don't you mind explain how? and how did you keep the apparently same distance between those stops? 

Thanks.