Moreover, funding for BLs from the small pots requires a local match. This is not the case with WOLs. Design Standards . Narrow bicycle facilities have a design standard of 20 mph. In Chapel Hill, the descents from town center and on other main roads lead bicyclists to routinely achieve speeds of 25 to 40 mph, so BLs are not indicated.
High speed bicycling greatly exacerbates the inherent dangers of curbside riding and BLs in general.
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 .