I don't believe it's implied, since this situation is the same for pretty much all but the farthest outreach branches of municipal natgas and water pipes and electrical powerlines (though potential being the key there). Heck, even light rail systems are this way to some extent in many cities; I must have knocked the "oneway" tags of the MAX lines in Portland half a dozen times after I added those tracks before I gave up on that (TriMet's rulebooks and, heck, even on the ground singage and signals!) clearly indicate (almost) all tracks go in both directions (the ones that don't are fairly obvious crossovers near yards, or wash rack tracks in yards themselves, and I'm honestly unsure on the locations of these save for the wash racks, and even then, I only have a sneaking suspicion which way trains move through them; and the 5th and 6th Avenue tracks, are probably one-way (given the trains run in traffic lanes there), but even then, I'm not actually sure trains aren't allowed to go against traffic there; I know the Yamhill and Morrison tracks definitely do allow travel in both directions, as I've been on trains on both streets that have gone against the normal operating direction).
On Fri, Jun 20, 2014 at 5:52 PM, Rob Nickerson <rob.j.nicker...@gmail.com> wrote: > There's no "onewayness" for natural gas pipelines. They may have a > prevailing direction, but the direction of flow is not determined by the > pipe. It's determined by the pressure differential (gas will flow from high > to low pressure) and this can be changed via use of compressor stations. > > A natural gas pipeline should not be tagged as oneway. > > Rob > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > >
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