Could it be? Easily. The hard part is converting from one to the other. Example, the town of Houten, as seen on this map [1]. Red is cycle-only or cyclist-firs

Could it be? Easily. The hard part is converting from one to the other. Example, the town of Houten, as seen on this map [1]. Red is cycle-only or cyclist-first, white is regular road. Note the ring road around the town, which carries most long-distance car traffic. The inner roads, where cars mix with cyclists, are only used to reach specific addresses and do not carry any through traffic. This principle has been proven to scale to larger cities as well. [1]: https://www.bikeauckland.org.nz/wp-content/uploads/2013/11/houten21.jpg https://www.bikeauckland.org.nz/wp-content/uploads/2013/11/h...