"Study after study in recent years has shown exactly what might be common sense to the average person: Bike lanes protected from heavy traffic are safer. Not only that, but more people choose to get around by bike once a protected bike lane is installed.
The reason really is not complicated. There is something inherently human that tells us riding a bike in the same lane as fast-moving cars and trucks is dangerous. Biking with traffic can be learned, and it can be done with reasonable safety. But only a small percentage of people will ever want to try it, let alone make it a daily habit. Most people see someone biking down Rainier Avenue and think, “That person is crazy.”"
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