[AriedK]

Here in the Netherlands we’ve got ‘fietsknooppunten’. Numbered junctions with proper bike paths linking them up, and clear signage pointing you to your next number. https://www.fietsknoop.nl/planner Just remembering, or writing down a couple of numbers gets you a long way. As a backup I have OsmAndMaps for pre-loading gpx files to my phone.

[zygentoma]

Oh, nice!

I think we might have copied that from you here in North Rhine-Westphalia, and the nice thing is, that by law the have to replace the signs when they are broken/missing (they are legally similar to road signs for cars). However, it sometimes still isn't always possible to just follow numbers because might might have missed or misread a sign, and you might just find out a kilometer later...

Anyway, it's ten thousand times better than in our neighbour state Rhineland-Palatinate

Edit: the Knotenpunktnetz NRW, if anyone is interested: https://radservice.radroutenplaner.nrw.de/rrp/nrw/cgi?lang=D... (you have to zoom in a little too see routes ... if you zoom in more, every sign is shown!)

[hommelix]

These are available in the Netherlands and Belgium. And as the cyclists there like to travel a little bit further, the network is extended around north of France, the German border, some in Luxembourg. This is a very nice way to travel.