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Jan 25, 2019 at 4:08 vote accept David White
Jan 24, 2019 at 21:29 answer added user6726 timeline score: 1
Jan 24, 2019 at 21:02 history edited David White
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Jan 24, 2019 at 20:31 comment added phoog If the limit does actually change to 55 at some point, the lack of a sign does not comply with the MUTCD ("At the downstream end of the section to which a speed limit applies, a Speed Limit sign showing the next speed limit shall be installed"), but I don't know whether that would have legal force in NC. You might be able to get a sign posted by complaining, however.
Jan 24, 2019 at 20:11 comment added phoog Is there any sign indicating that you're crossing a municipal boundary? NC General Statutes §20-141 could imply that this cancels any non-default speed limit. That's the way it commonly works in Europe, but it seems unusual to rely on that in the US.
Jan 24, 2019 at 19:19 comment added Brandin @DavidWhite If you travel downwards in this picture, then the only sign that applies to you is "Speed Limit 45". Signs that you see only in your rear-view mirror do not apply to you at all; those are for the other direction traffic.
Jan 24, 2019 at 19:14 comment added mkennedy Maybe check out this map. It's hosted by the company I work for, but the data was provided by NCDOT.
Jan 24, 2019 at 19:03 comment added mkennedy @DavidWhite Okay, thanks. You might want to add a tag for the state. DOTs can have different rules.
Jan 24, 2019 at 18:57 comment added David White @mkennedy, there is a specific stretch of road here in North Carolina, but I really was just thinking of the question more generally. Boiled down to its essence, it is "When does an unmarked rural road become a 55 MPH road, following the last posted sign for some speed less than 55?"
Jan 24, 2019 at 18:54 comment added mkennedy @DavidWhite I understood your question. I was pointing out there could be another explanation. Does the speed limit decrease again after that 45 mph sign heading into town? Any chance you can add a location? (so people can start following the road in Google StreetView? B-)
Jan 24, 2019 at 18:54 history edited David White CC BY-SA 4.0
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Jan 24, 2019 at 18:51 comment added David White @mkennedy, given that the road in/out of town is rural for a long distance, it's safe to assume that people coming into town were indeed traveling 55 and now must slow to 45. What I can't figure out is at what point I can legally speed up to 55 after I leave town (passing the last 45 sign before hitting miles of unsigned rural road)
Jan 24, 2019 at 18:48 comment added mkennedy Is the speed limit decrease in/near the town? I think that's what the 'warning reduced speed ahead' sign is for, not that it was 55 prior to the 45 mph sign.
Jan 24, 2019 at 18:46 comment added David White @Brandin, in my example, there is never a "Speed Limit 55" sign in my direction heading out of town. (My car would be at the top of this picture, traveling downwards.)
Jan 24, 2019 at 10:55 comment added Martin Bonner supports Monica @Brandin Different speed limits is not possible in the UK (except on dual carriageways).
Jan 24, 2019 at 5:33 comment added Brandin If you see "Speed Limit 55" facing you, then the speed limit is 55 MPH until you see the "Speed Limit 45" sign facing you. The "Reduced Speed Ahead" sign does not change the speed limit at all; it is just there to let you know that the limit could change soon. The signs facing the oncoming traffic are not relevant to you; in fact it's possible that the oncoming traffic could have a different speed limit, though that is rare.
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Jan 24, 2019 at 5:03 history asked David White CC BY-SA 4.0