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.
Flexibility is also evident for lower-class roads and streets, with recommended narrower lane widths consistent with lower design speeds on such roads. The discussion of lane width in the AASHTO Green Book (2) for urban areas also reflects a high degree of flexibility. It is noted that lane widths may vary from 10 to 12 ft (3.0 to 3.6 m) for arterials..