I noticed on http://wiki.openstreetmap.org/wiki/OSM_tags_for_routing/Access-Restrictions#United_States_of_America that there are special default restrictions for the US.
This isn't entirely accurate, there is surprisingly little parity between states in terms of restrictions, especially in terms of bicycle and foot access to certain routes. Most western states allow bicycles and pedestrians unless otherwise posted on motorways, whereas eastern states tend to disallow this kind of access. If I look it up state by state, can we get the motorway defaults in the US to reflect this? In some cases, a route that goes via a motorway in the US often gains a cyclist wider shoulders, gentler grades, fewer hills and dozens to hundreds of miles off the alternate routes (compare RCN "WV" to I-5 to get from Eugene to Donald, Oregon). Or in the Portland area, there's a few connections along US-26 in Washington County where the shortest, safest route is the freeway (such as Cedar Hills to North Plains, Glencoe or Roy, all in Oregon).
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