In fact I don't think the Dutch or Belgium planners would allow that painted cycle path thing. Imho that is more UKish than a lot of routes in the cycle friendly parts of Europe I've seen our heard about.
Not sure about the Dutch. Their law probably allows it, but the planners are very cautious about substandard designs for various reasons.
The Belgians definitely allow it. Paint-only lane on a 60mph main road:
How about even a door zone contraflow cycle lane that isn't even paint and indicated only by a dotted line of different colour cobbles? Check:
I think the difference may be that it's now only used for new builds in low-traffic low-speed areas (where the Dutch wouldn't now mark a lane), they acknowledge that they are old shoot waiting for money to replace or a compromise for "heritage" or whatever, and politicians won't queue up for photos and videos next to a fudge: in the UK, they'd be proudly grinning and pointing at that shoot, blethering on about how they've "gone all the way for cycling this time".
