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Alaska's reflective poles

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Quillz:
For those of you familiar with Alaska, what exactly are these?

https://www.google.com/maps/@61.948456,-147.1464441,3a,75y,57.96h,94.62t/data=!3m9!1e1!3m7!1s6FZamD9GWZHOCQ-NljzEZg!2e0!7i13312!8i6656!9m2!1b1!2i22

I've only seen them in Alaska, and only south of Fairbanks. Most of the time, there is nothing on them, they are just bent poles. Sometimes, though, I'll see reflective tape on them, and then reflective signs on top. That makes me assume these are intended to be makeshift lampposts? They are also always in the arrangements as seen in the photo: huge groupings of them, usually about a mile or so in length. Then you'll never see them again. They are mainly in the Anchorage area, although the Glenn Highway (pictured) has them in maybe 2-3 large groupings. A place to put on chains?

Are these anywhere else in northern North America, such as Canada? These seem to be exclusively Alaskan and most don't seem to really serve much purpose anymore.

oscar:
Snowplow guides?

JayhawkCO:

--- Quote from: oscar on October 06, 2022, 09:00:30 AM ---Snowplow guides?

--- End quote ---

Sure seems like it. Just more or less a bent version of what exists on mountain passes out here in Colorado. It looks like they're bent over to mark the very edge of the shoulder.

Scott5114:
I want to say Japan (Hokkaido specifically) has a similar style of snowplow marker, so that's probably it.

Quillz:
Interesting. I'm not from an area where snowplows are a thing, so I didn't think that's what they were. The reflective tape on the sides of most of them, which is also occasionally on the paddles on top (when they are installed) is why I thought they were some kind of "lamppost."

But I'm still curious why they are grouped like that? And they don't seem to exist at all once you go north of the Glenn Highway. I've driven the big Anchorage-Fairbanks loop numerous times now, and on the entire Parks and Richardson Highways, except for the latter near Valdez, they don't seem to be a thing.

Anchorage also has a more stylized variant on some of their bridges: https://www.google.com/maps/@61.4809416,-149.2531806,3a,75y,22.06h,103.21t/data=!3m10!1e1!3m8!1s0W1XsMBN4cXIp7clW-GTjg!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3D0W1XsMBN4cXIp7clW-GTjg%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D303.01%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192!9m2!1b1!2i10

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