At high speeds, bicyclists should be using the entire lane. Having a BL on one side of the road only, the ascent, is not advised due the even greater possibility of attracting wrong way riders. WOLs or regular width lanes have no design speed limitations that bicycles typically exceed, and may be on the ascent only, as is the case on parts of Piney Mountain Rd. Thus, where ROW is at a premium on a hilly road, WOLs can be paired with regular width lanes for even more space and cost savings. Maintenance and Debris .
BLs collect debris, as do shoulders on any road.
Examination of existing BLs proves this. The sweeping action of motor vehicles results in the debris being swept into the BL where it stays. This debris is inconsequential and hardly noticeable to motorists, but is a constant hazard for bicyclists. Sand, tree debris, and gravel are ubiquitous. At the least, debris is an ever present nuisance in BLs.