> The graphic from Miami LOOKS like a traffic sign, but it's
> really an advertisement on a bus shelter, so it's out of
> Traffic Engineering's jurisdiction, and it's not covered by
> the MUTCD. (It might not be a bad idea to have a sign like
> that in the MUTCD, but I'm not holding my breath).

=v= The MUTCD's "Bikes May Use Full Lane" sign evolved from
signs that San Francisco experimented with.  The S.F. sign
was a yellow diamond and said "[Bicycles] Allowed Use of Full
Lane" (a.k.a. BAUFL).  I have a few photos of those signs in
the wild:

http://www.flickr.com/photos/jym/tags/baufl

The MUTCD argued that, as a regulatory sign, it should be white
and rectangular, whereas yellow diamonds are warning signs.
They replaced the word "Allowed" with "May" to make it fit.

=v= Oddly enough, there's a wide variety of "Share the Road"
(StR) signs all over the country.  They are all yellow diamond
"hazard" signs, and aside from the wording there's absolutely
no consistency.  I vaguely recall seeing the Miami advert's
graphic on somebody's StR sign.

=v= Personally I think "Share the Road" is too vague to be of
any value.  The phrase has even been used against bicyclists
who take the lane, sometimes by violent motorists.  Even worse,
though, some of the graphics on these signs indicate dangerous
situations, such as bikes riding in the door zone and not taking
the lane.  So I don't quite get why the MUTCD was so keen on
reining in the BAUFL signs but has done nothing about the years
older and far more problematic StR signs!
    <_Jym_>

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