In the interest of expediting the journey towards bicycle-friendly cities and eliminating misconceptions, Copenhagenize Design Co. has produced The Copenhagenize Bicycle Planning Guide. Based on Danish Best Practice developed over the past century, since the first separated bike lane was implemented in Copenhagen in 1915. The beauty of the bicycle infrastructure network in Copenhagen is the uniform design of the infrastructure. There are, by and large, four types of infrastructure - all represented in this graphic. Based on the speed limit for cars, you select the appropriate style of infrastructure and off you go. One of these designs fits every street in the country and, indeed, every street in every city in the world.
If you fancy sending your local planner/engineer a gift that keeps on giving, this graphic is also available as a poster.