.  (a) This chapter does not prohibit local authorities from
establishing, by ordinance or resolution, bicycle lanes separated
from any vehicular lanes upon highways, other than state highways as
defined in Section 24 of the Streets and Highways Code and county
highways established pursuant to Article 5 (commencing with Section
1720) of Chapter 9 of Division 2 of the Streets and Highways Code.
   (b) Bicycle lanes established pursuant to this section shall be
constructed in compliance with Section 891 of the Streets and
Highways Code.


21207.5.  Notwithstanding Sections 21207 and 23127 of this code, or
any other provision of law, no motorized bicycle may be operated on a
bicycle path or trail, bikeway, bicycle lane established pursuant to
Section 21207, equestrian trail, or hiking or recreational trail,
unless it is within or adjacent to a roadway or unless the local
authority or the governing body of a public agency having
jurisdiction over such path or trail permits, by ordinance, such
operation.