For UK cycle lanes "mandatory" has nothing to do with bikes. It means that motor vehicles cannot enter them. Non-mandatory cycle lanes (they may have a specific name, I can't remember) are delineated with a dashed line and motor vehicles can enter them for turning etc.
For UK cycle lanes "mandatory" has nothing to do with bikes. It means that motor vehicles cannot enter them. Non-mandatory cycle lanes (they may have a specific name, I can't remember) are delineated with a dashed line and motor vehicles can enter them for turning etc.