One last addendum to my letter to the editor about dangers of cyclists on Palo Alto's downtown sidewalks -- here is the relevant ordinance from the City of Palo ALto web site:
10.64.130 Riding bicycles on sidewalks.
(a) No person shall ride or operate a bicycle upon any sidewalk in a business district, any sidewalk in or on any pedestrian underpass or overpass, or any sidewalk on the Embarcadero Road Overpass across Bayshore Freeway unless such sidewalk is officially designated as a bicycle route.
(b) Any person riding or operating a bicycle upon any sidewalk shall exercise due care and shall yield the right-of-way to all pedestrians.
(c) No person riding or operating a bicycle upon any sidewalk where a bicycle lane or path has been established shall travel in a direction other than as posted.
(Ord. 3055 § 1, 1978: Ord. 2877 910 (part), 1975: Ord. 2652 § 7, 1972: Ord. 2496 (part), 1969: Ord. 2470 (part), 1968: Ord. 2051 (part), 1961: prior code § 16.22)