Bike Route Types
By infrastructure type
The idea that roads should have no special considerations for bikes: they should act and be treated like cars.
By comfort level
Comfort levels are generally done on a four-point scale, between "Safe for Children" and "Only for experts".
Bowling Green, KY lists them like this:
- Blue: Beginning riders, including children accompanied by an adult
- Yellow: Intermediate riders who have the skill to ride as a vehicle in traffic
- Red: Advanced riders who have the skill to navigate heavy vehicular traffic
- Green: Greenways/off-road shared-use paths that are separated from vehicular traffic; suitable for all skill levels
Arlington, VA: https://kchanba.com/arlington-bicycle-comfort-level-maps
Illinois uses a numeric scale: https://rideillinois.org/blos/blosform.htm