On 6/9/2011 3:54 PM, David ``Smith'' wrote:
On Sun, May 29, 2011 at 4:08 AM, James Mast <[email protected]
<mailto:[email protected]>> wrote:

    I just happened to notice this guy tonight was going around and
    editing the "ref" tags on highways in the US just to replace
    the space and put in the hyphen.


There's actually a sensible reason for this, at least for Interstate
highways:
<http://mutcd.fhwa.dot.gov/htm/2009/part2/part2a.htm>
Manual on Uniform Traffic Control Devices, Section 2A.13, guidance
paragraph 9:
"When an Interstate route is displayed in text form instead of using the
route shield, a hyphen should be used for clarity, such as "I-50.""

Of course, this applies to road signs and not maps, but I still count
this as precedence.  Renderers should ideally tolerate ref tags of the
form "I-50".

Yes, I think we all recognize that I-x is the common form outside OSM. But for whatever reason we've been using I x in OSM for a long time.

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