This sign is also common in france; it means no entry except for bicicles.
http://foix.fubicy.org/images/Interdit_sauf_velo.png
(source: fubicy.org)
broken image fixed (click 'rendered output' or 'side-by-side' to see the difference); for more info, see https://gist.github.com/Glorfindel83/9d954d34385d2ac2597bbe864466259f
Glorfindel
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