While it might be uncommon for two-digit Interstate highways to change their directions, it's quite common for three-digit ones to do so, and it shouldn't be treated any differently.
Some examples of changing direction, all of which are mapped as a single relation for the state they're in, with cardinal directions for the roles. I-275 (Cincinnati) I-270 (Columbus) I-465 (Indianapolis) I-495 (Washington, D.C.) None of these have separate relations for the opposite directions, just a single relation for the whole highway in that state. Some other examples: - I-64 in Virginia. South of I-264, it loses East/West signage (this fact is not currently mapped in OSM) - US 98 in Florida changes from EW to NS and back to EW (this fact is not currently mapped in OSM). - Ohio SR 104 changes from North/South to East/West near I-71, just south of Columbus (mapped as cardinal directions for roles). On Fri, Sep 22, 2017 at 1:32 AM, Bill Ricker <bill.n1...@gmail.com> wrote: > He seems to be correct, using the (not usable for mapping but usable > to inform discussion) G-Streetview, I do indeed see signage as > described, which defies commonly understood version of Fed standards. > Not just BUSINESS route, not just when cotracking i-94, but actual > green, solo "WEST 69 MILE 198" with red white and blue shield. > > Do we know if whether there is a Fed exemption, the Feds actually > acknowledge that I-69 actually E-W beyond a certain point, and so can > be E-W here? Or if the State of Michigan is defying Federal > standards in the interest of being understandable? After the Feds > threatened to pull our block grant $$ if we didn't renumber our exits > their way, I'm amazed they're letting this slide when they could just > rename the E-W section I-369 E-W and it'd be a compliant extension of > a N-S route. Perhaps the bureaucracy can be reasonable. [I spent a few > years with DOT, not in Highway. Nice folks really.] > > (Probably not the only exception. There are 1xx/2xx/3xx/4xx that don't > fit the spur/loop rule too.) > > > (Frankly, I'm surprised any of 69's escutcheon route markers remain > unstolen, like the 420 mile markers that keep wandering off.) > > So back to original question(s) -- > - who should fix the E-W section of I-69 to be E-W > - how - split relation? relation of relation? > - from where ? At what point does signage change to E-W ? > [and for mapping purposes no I'm NOT going to suggest we get that > from a copyright source like StreeView, that needs free & open ground > truth. ] > > _______________________________________________ > Talk-us mailing list > Talk-us@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-us _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us
