Recently I was talking about passive house, an extremely innovative energy standard that has taken root in Europe, Germany in particular. What I was surprised to learn was that the genesis of the idea was in the United States. There seems to be a pattern where innovative ideas come out of the United States but get implemented elsewhere. For example, here are a couple surprising articles about bike (cycling) lanes in the U.S. For example, protected bike lanes were all the rage right around the turn of the 20th century, before automobiles became the dominant technology. The historical images in this article are fascinating – it was not unusual for the bike lane to be paved and the horse and buggy lanes not. The layout of some of the bike lanes looks very familiar from today’s recreational trails.

Much more recently, the U.S. Federal Highway Authority had a serious standard for protected bike lanes in the 1970s, and it seemed like they were likely to move forward. Of course, we all know they did not. But again, in Europe, they did on a large scale. I don’t know whether the Dutch and Danish designs were copied or inspired by the American designs, but they did start to take off right around that time.