So I though these (https://www.google.com/maps/@34.7881109,-92.2813342,3a,15y,315.74h,91.65t/data=!3m6!1e1!3m4!1smFzGd3aiuyqmwOIY-WBvXA!2e0!7i13312!8i6656) (the boxes) were prohibiting left/right turn LED setups, but judging from other photos, maybe not. They seem way small for the size of such arrows that are used. They could be receivers, Van Buren has one on a mast facing Main St. It looks like something that would light up, but I guess not.
Maybe sensors for emergency vehicles, so the light changes to green for them? As I recall, it works on some kind of coded signals, microwave or infrared, proprietary to the police and fire.
Quote from: GaryV on November 14, 2017, 09:36:43 PM
Maybe sensors for emergency vehicles, so the light changes to green for them? As I recall, it works on some kind of coded signals, microwave or infrared, proprietary to the police and fire.
Couldn't they just use an antenna?
Also, I thought they were blackout boxes, But I saw several in a recent thread that were much larger. interesting... :hmmm:
IR receivers for emergency vehicle pre-emption look nothing like that, they're a small black cylinder with a tube sticking out in the direction it's supposed to receive from.
These are 16" pedestrian housing. In days past they used to be used as blankout signs (notably by California for "Meter On" signs.) I'm guessing these light up "No Left Turn" and "No Right Turn" when a train is going buy.
They look like light up no left/right signs given the railroad tracks next to them. At this angle, with the train there, they appear to be lit: https://goo.gl/maps/v6ByRFqPNGs Here's some from Illinois: https://goo.gl/maps/qhK813vctDm
Quote from: Brandon on November 15, 2017, 10:54:32 AM
They look like light up no left/right signs given the railroad tracks next to them. At this angle, with the train there, they appear to be lit: https://goo.gl/maps/v6ByRFqPNGs
Especially when you enhance the GSV:
(https://i.imgur.com/lqqMT7t.png)
Here's a better shot of one from RVA
https://www.google.com/maps/@37.5734867,-77.483601,3a,15y,324.19h,100.54t/data=!3m7!1e1!3m5!1sw1UrmTh7GRc-_s_xlM4SKQ!2e0!5s20110801T000000!7i13312!8i6656
Quote from: abc2VE on November 18, 2017, 04:37:00 PM
Here's a better shot of one from RVA
https://www.google.com/maps/@37.5734867,-77.483601,3a,15y,324.19h,100.54t/data=!3m7!1e1!3m5!1sw1UrmTh7GRc-_s_xlM4SKQ!2e0!5s20110801T000000!7i13312!8i6656
Now, I wonder if the one I posted is texted based or symbol based. It could be either...