"This is because streetcars contribute strongly to the development of more dense, urban, less car-dependent cities-the same characteristics that produce the most friendly urban bicycling environment."
"It's also no coincidence that Portland is both America's top cycling city and home to our country's streetcar renaissance. The same city that most agree is the best urban cycling experience in the country is also home to the largest modern streetcar network.
To be sure, integrating bikes and streetcars takes a bit of extra planning. Amsterdam and Portland both have extensive bikeway networks so that mixing is less necessary."