We date contemporary ‘bike lane’ design back to the 1970s, when a cycling wave hit Europe and North America. Here’s an historical example from Toronto:
Toronto’s cycling committee was established at city hall in 1975 to promote safe cycling. Four years later, the first bike lane in old Toronto was constructed on Poplar Plains Road.
There have been many iterations since, each once advancing more space for active transportation.
Vancouver was one of the first to evolve the completely separated route in a downtown – Dunsmuir and Hornby in 2010 after the Olympics.
Now other cities that have generated large volumes of bike traffic have realized they have to reallocate some highly contested space. Like on the Brooklyn Bridge.
The New York Times:
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… the city will finally address longstanding concerns about the Brooklyn Bridge, which has long been known as a particularly dangerous route for cyclists, and the Queensboro Bridge. Under the plan, the city will ban cars from the inner lane of the Manhattan-bound side of the Brooklyn Bridge to build a two-way bike lane.
The existing promenade area at the center of the bridge, which is elevated above the car lanes, will be used only by pedestrians. Cyclists will no longer be able to ride on the promenade, where there is currently a bike lane.