Talking about the success of recent bike-oriented policies in Paris:
The City of Paris has done their homework, too. If you want bike culture, you need segregated bike infrastructure for the bikes. […] Apart from the bus lanes – now bus/bike lanes – there are many places that have segregated and dedicated bike lanes. This is, of course, the key to developing bike culture. If there was a book called Bike Culture for Dummies, this would be on the first page.
There are so many excuses as to why implementing bike culture is so difficult in cities/countries without it. Excessive car traffic, car-based culture, lack of awareness about bikes in the traffic, implementing bike infrastructure, etc.
In the course of 10 months, Paris has basically proved them all wrong. If you build it, they will come.