News:

See the Forum Status page for any planned Forum maintenance or alerts on Forum outages.

Main Menu

Traffic signal

Started by Tom89t, January 14, 2012, 01:01:45 AM

Previous topic - Next topic

CoreySamson

Quote from: CoreySamson on March 30, 2026, 05:30:22 PMThere's a new flashing red right arrow traffic signal for right-turning traffic in Atoka, OK on US 69/75 at Court St here:
https://maps.app.goo.gl/MnNphzvzFivjHECc6 (GSV came in a bit too early for it to be installed; notice the spot for wiring on the right side of the horizontal pole)

The signal looks like a normal Oklahoma signal, but has two red faces, arranged horizontally. There was also a regulatory sign on the pole beside the sign, but I couldn't read it.
UPDATE: I just checked this spot on GSV again and it has now updated to show the new signal:
https://maps.app.goo.gl/Y8aSbsWSz6zSqjbq5

Really bizarre situation, but the signals on the far sides of the intersection are pretty cool.
Buc-ee's and QuikTrip fanboy. Clincher of 49 FM roads. Proponent of the TX U-turn. Unabashed HAWK hater. ORU '26.

Route Log
Clinches
Counties
TM


Revive 755

Quote from: CoreySamson on September 14, 2026, 08:57:55 PMUPDATE: I just checked this spot on GSV again and it has now updated to show the new signal:
https://maps.app.goo.gl/Y8aSbsWSz6zSqjbq5

Really bizarre situation, but the signals on the far sides of the intersection are pretty cool.

So who yields - the southbound left with the flashing yellow arrow or the northbound right turn with the flashing red arrow?

That setup also seems likely to encourage rolling stops for northbound - going off Streetview it looks like the flashing red arrow is on when the adjacent pedestrian signal is showing a stead handy.

kphoger

Quote from: Revive 755 on September 14, 2026, 10:12:40 PMSo who yields - the southbound left with the flashing yellow arrow or the northbound right turn with the flashing red arrow[?

The latter.  "Right turn yield on flashing red arrow".

Yes, I know there's a similar sign coming from the other direction, but an FYA should be treated basically like a solid green ball—and in that case, the right turn on red should yield.

He Is Already Here! Let's Go, Flamingo!
Dost thou understand the graveness of the circumstances?
Deut 23:13
Male pronouns, please.

Quote from: PKDIf you can control the meaning of words, you can control the people who must use them.

jakeroot

Quote from: kphoger on September 14, 2026, 10:45:25 PM
Quote from: Revive 755 on September 14, 2026, 10:12:40 PMSo who yields - the southbound left with the flashing yellow arrow or the northbound right turn with the flashing red arrow[?

The latter.  "Right turn yield on flashing red arrow".

Yes, I know there's a similar sign coming from the other direction, but an FYA should be treated basically like a solid green ball—and in that case, the right turn on red should yield.

I'm sure you know why stop signs are octagonal-shaped, right? So they can be recognized regardless of whether you can see the face of the sign or not?

This is the exact same situation, without those contextual clues. There is no reasonable way traffic turning left could possibly know traffic turning right has to yield to them. And I highly doubt traffic turning right would assume they would have to yield to oncoming left turns. I personally wouldn't.

The sign is clearly designed for the pedestrian crossing, and should be worded as such: "right turn on red yield to pedestrians after stop". Ideally a green arrow or green ball would be displayed when the red arrow wasn't shown/ped signal not activated.

There is a variant of the standard three-ball display that includes either a solid or flashing red arrow for use at pedestrian crossings. It is extremely rare, but it's what they should have used at this location. The only example I know if is in Spokane, WA. This would have provided a red arrow during (and only during) the WALK phase, before reverting back to normal operations.

roadfro

Quote from: jakeroot on September 15, 2026, 09:58:39 AM
Quote from: kphoger on September 14, 2026, 10:45:25 PM
Quote from: Revive 755 on September 14, 2026, 10:12:40 PMSo who yields - the southbound left with the flashing yellow arrow or the northbound right turn with the flashing red arrow[?

The latter.  "Right turn yield on flashing red arrow".

Yes, I know there's a similar sign coming from the other direction, but an FYA should be treated basically like a solid green ball—and in that case, the right turn on red should yield.

I'm sure you know why stop signs are octagonal-shaped, right? So they can be recognized regardless of whether you can see the face of the sign or not?

This is the exact same situation, without those contextual clues. There is no reasonable way traffic turning left could possibly know traffic turning right has to yield to them. And I highly doubt traffic turning right would assume they would have to yield to oncoming left turns. I personally wouldn't.

The sign is clearly designed for the pedestrian crossing, and should be worded as such: "right turn on red yield to pedestrians after stop". Ideally a green arrow or green ball would be displayed when the red arrow wasn't shown/ped signal not activated.

There is a variant of the standard three-ball display that includes either a solid or flashing red arrow for use at pedestrian crossings. It is extremely rare, but it's what they should have used at this location. The only example I know if is in Spokane, WA. This would have provided a red arrow during (and only during) the WALK phase, before reverting back to normal operations.
I'm wondering why a special signal to protect the crossing from right turns at this location to begin with. Doesn't seem out of the ordinary in any way. 
Roadfro - AARoads Pacific Southwest moderator since 2010, Nevada roadgeek since 1983.

jakeroot

Quote from: roadfro on September 16, 2026, 12:32:25 PM
Quote from: jakeroot on September 15, 2026, 09:58:39 AM
Quote from: kphoger on September 14, 2026, 10:45:25 PM
Quote from: Revive 755 on September 14, 2026, 10:12:40 PMSo who yields - the southbound left with the flashing yellow arrow or the northbound right turn with the flashing red arrow[?

The latter.  "Right turn yield on flashing red arrow".

Yes, I know there's a similar sign coming from the other direction, but an FYA should be treated basically like a solid green ball—and in that case, the right turn on red should yield.

I'm sure you know why stop signs are octagonal-shaped, right? So they can be recognized regardless of whether you can see the face of the sign or not?

This is the exact same situation, without those contextual clues. There is no reasonable way traffic turning left could possibly know traffic turning right has to yield to them. And I highly doubt traffic turning right would assume they would have to yield to oncoming left turns. I personally wouldn't.

The sign is clearly designed for the pedestrian crossing, and should be worded as such: "right turn on red yield to pedestrians after stop". Ideally a green arrow or green ball would be displayed when the red arrow wasn't shown/ped signal not activated.

There is a variant of the standard three-ball display that includes either a solid or flashing red arrow for use at pedestrian crossings. It is extremely rare, but it's what they should have used at this location. The only example I know if is in Spokane, WA. This would have provided a red arrow during (and only during) the WALK phase, before reverting back to normal operations.
I'm wondering why a special signal to protect the crossing from right turns at this location to begin with. Doesn't seem out of the ordinary in any way.

I assume you mean left turns? You've got a point, I don't know what is special about this particular turn that would warrant this type of signal. They definitely used the correct signal for the job, as it's a shared-lane signal as opposed to left turn signal, which would be wrong without a dedicated left turn lane. But why it was warranted, that's anyone's guess. There's a lot of medical facilities nearby, but I don't see why that would be a specific concern. Maybe they just wanted to try out the signal as a test.

Dirt Roads

Quote from: Revive 755 on September 14, 2026, 10:12:40 PMSo who yields - the southbound left with the flashing yellow arrow or the northbound right turn with the flashing red arrow[?

Quote from: kphoger on September 14, 2026, 10:45:25 PMThe latter.  "Right turn yield on flashing red arrow".

Yes, I know there's a similar sign coming from the other direction, but an FYA should be treated basically like a solid green ball—and in that case, the right turn on red should yield.

Quote from: jakeroot on September 15, 2026, 09:58:39 AMI'm sure you know why stop signs are octagonal-shaped, right? So they can be recognized regardless of whether you can see the face of the sign or not?

This is the exact same situation, without those contextual clues. There is no reasonable way traffic turning left could possibly know traffic turning right has to yield to them. And I highly doubt traffic turning right would assume they would have to yield to oncoming left turns. I personally wouldn't.

The sign is clearly designed for the pedestrian crossing, and should be worded as such: "right turn on red yield to pedestrians after stop". Ideally a green arrow or green ball would be displayed when the red arrow wasn't shown/ped signal not activated.

There is a variant of the standard three-ball display that includes either a solid or flashing red arrow for use at pedestrian crossings. It is extremely rare, but it's what they should have used at this location. The only example I know if is in Spokane, WA. This would have provided a red arrow during (and only during) the WALK phase, before reverting back to normal operations.

Quote from: roadfro on September 16, 2026, 12:32:25 PMI'm wondering why a special signal to protect the crossing from right turns at this location to begin with. Doesn't seem out of the ordinary in any way.

Perhaps there were issues (either here or somewhere else in the area) with right turns RTOR competing with left turns on FYLTA at the same time as pedestrians were in the crosswalk (in this case thinking that they are "protected" with a ped signal).  As I have ranted several times in other threads, there is a significant issue (in some places) with folks making left turns believing that they have the right-of-way over opposing traffic making right turns (and the problem is not necessarily associated with traffic signals). 

Around here, this seems to be an issue more with eastbound traffic (towards Raleigh-Durham) than with westbound traffic (towards Burlington-Greensboro).  The only thing that I can figure is that eastbound traffic tends to be in a bigger hurry to get to work.

roadman65

#5732
https://maps.app.goo.gl/y8wLeVHZft1xF1Xr6
Check out the doghouse signal.  Red left arrow where a yellow left arrow is normally.
Every day is a winding road, you just got to get used to it.

Sheryl Crowe

Tendies

Phoenix, AZ: Two standard 3 section traffic signals mounted vertically on top of each other. I believe this one has been replaced. The tower mounted directly to the right used to be a 5 section 3M unit before being replaced by August 2022.

https://maps.app.goo.gl/M7V7nKnog71MRkrn8
It's hard being EPIC in a world of FAIL.
Some men just want to watch the world burn. But I've got the lighter.
The world would be better without me. So I must continue living out of spite.

jakeroot

Quote from: Tendies on October 07, 2026, 06:34:08 AMPhoenix, AZ: Two standard 3 section traffic signals mounted vertically on top of each other. I believe this one has been replaced. The tower mounted directly to the right used to be a 5 section 3M unit before being replaced by August 2022.

https://maps.app.goo.gl/M7V7nKnog71MRkrn8

It's weird that they let the signal in the back right get burned out and then never replace it. Technically there are three signals here, they don't actually need the two stacked three-section signals.

I've seen sorta similar things in California: https://maps.app.goo.gl/SLJBnF8UP6ahxmVa8

wanderer2575

Quote from: roadman65 on October 05, 2026, 09:33:26 AMhttps://maps.app.goo.gl/y8wLeVHZft1xF1Xr6
Check out the doghouse signal.  Red left arrow where a yellow left arrow is normally.

What's below the red left arrow -- a yellow arrow or a green arrow?  And does that side of the doghouse go dark when the other color is lit?

kphoger


He Is Already Here! Let's Go, Flamingo!
Dost thou understand the graveness of the circumstances?
Deut 23:13
Male pronouns, please.

Quote from: PKDIf you can control the meaning of words, you can control the people who must use them.

kphoger


He Is Already Here! Let's Go, Flamingo!
Dost thou understand the graveness of the circumstances?
Deut 23:13
Male pronouns, please.

Quote from: PKDIf you can control the meaning of words, you can control the people who must use them.

wanderer2575

Ontario style, with the green and yellow arrows sharing the same aspect.  That's unusual.

jakeroot

Quote from: wanderer2575 on October 07, 2026, 07:05:10 PMOntario style, with the green and yellow arrows sharing the same aspect.  That's unusual.

Bimodal arrows are extremely common in the United States as well. Only difference is that they don't flash twice per second like in Canada.

Tendies

#5740
Quote from: jakeroot on October 07, 2026, 02:06:58 PM
Quote from: Tendies on October 07, 2026, 06:34:08 AMPhoenix, AZ: Two standard 3 section traffic signals mounted vertically on top of each other. I believe this one has been replaced. The tower mounted directly to the right used to be a 5 section 3M unit before being replaced by August 2022.

https://maps.app.goo.gl/M7V7nKnog71MRkrn8

It's weird that they let the signal in the back right get burned out and then never replace it. Technically there are three signals here, they don't actually need the two stacked three-section signals.

I've seen sorta similar things in California: https://maps.app.goo.gl/SLJBnF8UP6ahxmVa8
Didn't notice it until I scooted closer (https://maps.app.goo.gl/MRmfh2aUKtW1uMCM8) and saw the red burnt out. Scoot back (same angle as my original link) and that corner signal is still on. Corner signal is still dead in the Jan 2026 capture (https://maps.app.goo.gl/qgUSoAPZcJzscGsB6). Did the red light burn out mid capture?

Here's another angle of the same intersection. Left tower has the red circle and yellow arrow burning while the green is displayed overhead. I swear I remember seeing the red circle and green at the same time, but had no evidence of that until I found this capture. The center tower has the red circle obscured, but both other circles are dark, also displaying yellow arrow
https://maps.app.goo.gl/QfqCYuJwiJxcU6BP6

Either way, the entire mast arm assembly was replaced this year with a standard FYA. Drove by there yesterday and I didn't remember whether or not the stacked signals are still present facing 21av. I only went back and checked after noticing the mast arms were replaced.
It's hard being EPIC in a world of FAIL.
Some men just want to watch the world burn. But I've got the lighter.
The world would be better without me. So I must continue living out of spite.

mrsman

Quote from: Dirt Roads on September 16, 2026, 10:27:46 PM
Quote from: Revive 755 on September 14, 2026, 10:12:40 PMSo who yields - the southbound left with the flashing yellow arrow or the northbound right turn with the flashing red arrow[?

Quote from: kphoger on September 14, 2026, 10:45:25 PMThe latter.  "Right turn yield on flashing red arrow".

Yes, I know there's a similar sign coming from the other direction, but an FYA should be treated basically like a solid green ball—and in that case, the right turn on red should yield.

Quote from: jakeroot on September 15, 2026, 09:58:39 AMI'm sure you know why stop signs are octagonal-shaped, right? So they can be recognized regardless of whether you can see the face of the sign or not?

This is the exact same situation, without those contextual clues. There is no reasonable way traffic turning left could possibly know traffic turning right has to yield to them. And I highly doubt traffic turning right would assume they would have to yield to oncoming left turns. I personally wouldn't.

The sign is clearly designed for the pedestrian crossing, and should be worded as such: "right turn on red yield to pedestrians after stop". Ideally a green arrow or green ball would be displayed when the red arrow wasn't shown/ped signal not activated.

There is a variant of the standard three-ball display that includes either a solid or flashing red arrow for use at pedestrian crossings. It is extremely rare, but it's what they should have used at this location. The only example I know if is in Spokane, WA. This would have provided a red arrow during (and only during) the WALK phase, before reverting back to normal operations.

Quote from: roadfro on September 16, 2026, 12:32:25 PMI'm wondering why a special signal to protect the crossing from right turns at this location to begin with. Doesn't seem out of the ordinary in any way.

Perhaps there were issues (either here or somewhere else in the area) with right turns RTOR competing with left turns on FYLTA at the same time as pedestrians were in the crosswalk (in this case thinking that they are "protected" with a ped signal).  As I have ranted several times in other threads, there is a significant issue (in some places) with folks making left turns believing that they have the right-of-way over opposing traffic making right turns (and the problem is not necessarily associated with traffic signals). 

Around here, this seems to be an issue more with eastbound traffic (towards Raleigh-Durham) than with westbound traffic (towards Burlington-Greensboro).  The only thing that I can figure is that eastbound traffic tends to be in a bigger hurry to get to work.

The intersection of 9th and Figueroa in Downtown LA had a traffic signal similar to the Spokane example around 2017-18.

https://www.google.com/maps/place/900+S+Figueroa+St,+Los+Angeles,+CA+90015/@34.0462622,-118.2627587,79a,39.4y,99.12h,86.26t/data=!3m8!1e1!3m6!1s3uRvWhzLQ9dVemGPR0vN8w!2e0!5s20171201T000000!6shttps:%2F%2Fstreetviewpixels-pa.clients6.google.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D3.7410115862212905%26panoid%3D3uRvWhzLQ9dVemGPR0vN8w%26yaw%3D99.12305291190408!7i16384!8i8192!4m6!3m5!1s0x80c2c7b70c4e79cf:0xf64b61cd067540b!8m2!3d34.0459964!4d-118.2627574!16s%2Fg%2F11snnl39sr?entry=ttu&g_ep=EgoyMDI2MTAwNy4wIKXMDSoASAFQAw%3D%3D

It has since been changed to a RA,YA,GA signal for the left turns, and now there are two lanes requiring left turn, as opposed to one left turn lane and one option lane.

The big qn I have with regard to Atoka is why the right turn restriction was put up in the first place.  There doesn't appear to be enough pedestrians in the area to justify any special treatments.

Quote from: kphoger on October 07, 2026, 02:51:52 PM
Quote from: wanderer2575 on October 07, 2026, 02:49:20 PMWhat's below the red left arrow -- a yellow arrow or a green arrow?

https://maps.app.goo.gl/uinEDFHhjTZtdoVi8

But maybe:
https://maps.app.goo.gl/bzX5YskYtGNr5ADLA

And for this NJ signal - this isn't necessary.  The sign clearly says left turn on green arrow.  A standard doghouse operation for the middle signal face is sufficient.  Green arrow concurrent with the green arrow on the RA/YA/GA signal face on the left and yellow arrow concurrent with the yellow arrow.  The current operation is just too weird.