From Principles of Cycle Planning by John Franklin:
At the international Velo City conference in Munich this year, a Swiss delegate described how there has been a major shift in his country from accommodating cyclists separately to mixing cyclists with traffic, with changes to the road environment as necessary. This has led to big increases in cycling. The mayors of Munich, Brussels, Copenhagen and Paris each explicitly stated how they wanted cycling back on their streets. And even a speaker from the Netherlands defined ‘cycle-friendly cities’ as those with as few special facilities for cyclists as possible.
The factors that are driving these trends include recognition that the quality of separate infrastructure is rarely good enough to satisfy a wide range of cyclists; that the capacity of such infrastructure is too limited for potential cycling growth; and intractable problems of safety.