The premium for Part B coverage is determined by Medicare. The monthly premium amount is available in the Medicare & You handbook produced by the U.S. Centers for Medicare and Medicaid (CMS) and is also available on the Medicare website at www.medicare.gov.
The fact is, there is a precise width of lane that must exist for cyclists to operate their vehicles safely, and it's not the 4ft standard width bike lane, nor is it the 6ft standard width bike path, nor is it the 14ft wide outside lane.
As such, widths varied considerably. The width of the paved road seems to have averaged 7 m for main routes, although some excavated sections of Watling Street have proved to be over 10 m wide, whilst The Fosse Way is less than 6 m in places.