The Atlantic Cities often covers how cities and urban areas around the world accommodate bicycle traffic. Here are three recent posts:
10 Brilliant Pieces of Bike Infrastructure – examples, many with clips, from ten cities in Europe, China, and the U.S.
A Real-Time Bike-Share Map for the Entire World – a researcher at the University College of London has consolidated info from 85 bike-share systems around the world
Bike Paths Need More of These – Wooo! – Jump Ramps – about the Whoopdeedoo course in Vancouver