Cycle tracks are not a traffic control devices, but are transportation
facilities for cyclists.
The NACTO designs are the result of allowing bicycle advocates in
certain cities to jump into the highway design standards process. The
AASHTO standards were an attempt to design according to accepted traffic
principles and traffic laws. With the exceptions listed in the FTR and
BL laws, the combination pretty much allowed operation according to the
standard rules of the road. The biggest violation was, of course, having
bike lanes that encouraged incompetent cyclists to overtake on the
right-hand side of right-turning motor traffic. However, NACTO designs
apparently are based on the principle that incompetent cyclists need
painted guidance (or physical guidance in the case of cycle tracks) at
all times, so that the designs often violate standard traffic
engineering principles and rules, without the designers having expressed
any concern over these violations. So the politicians, not having any
traffic expertise themselves, are left with conflicting "standards"
whose conflicts they cannot evaluate.
--
John Forester, MS, PE
Bicycle Transportation Engineer
7585 Church St. Lemon Grove CA 91945-2306
619-644-5481 fore...@johnforester.com
www.johnforester.com