[Tagging] Is a sidewalk always adjacent to a traversable road?

[Nathan Edgars II]

On 8/24/2011 3:44 AM, Simone Saviolo wrote:
>Secondly, I'm not sure that the
> way of the crossing would be a highway=footway. Isn't that supposed to
> be a separate "carriageway"?

How is this not a separate linear object? 
http://maps.google.com/maps?q=orlando&hl=en&ll=28.535671,-81.374757&spn=0.001046,0.002575&gl=us&t=k&z=20&vpsrc=6&layer=c&cbll=28.535671,-81.374757&panoid=DE6JLCTtWf6zny20lLARPw&cbp=12,188.61,,0,8.06
(Yes, that's an 'old people crossing' sign :))