Double Doghouse Signals?

[KEK Inc.]

Why aren't these a thing? Doghouses are common for left turn protected and unprotected phases; however, they're rare for a protected right turn.

I made a mock-up of what I'm talking about (note this intersection/street does not exist):






There's actually one that I know of in Monroe, WA on US 2.

https://goo.gl/maps/zqqbwCvUBuFBLBH46

[jeffandnicole]

NJDOT generally uses bi-modal green/yellow arrows rather than doghouses, but what you're describing can be found here:  https://goo.gl/maps/L74rapiiQBCeQsJk7 .  The bottom of the left signal is a left arrow, bottom of the right signal is a right arrow.  Zoom out to see that both signals are duplicated closer to the stop line, which is standard in NJ providing 2 indications per movement.

That said your point is taken: Having both left and right arrows seems to be fairly rare.  Part of the issue may be a right arrow indicates priority, whereas a permitted u-turn at a traffic light on the cross street actually would give them priority.

[STLmapboy]

They're pretty common in the Chicagoland area, except with towers. Here are some examples.

[Dustin DeWinn]

what program did you use to mock that up?

[1995hoo]

Here's one near my neighborhood. I find it odd that there's that center signal head when there are two thru lanes, a left-only lane, and a right-only lane–it seems like the two doghouses alone should be enough.

https://goo.gl/maps/VR2uimCp6CzmkYScA

[UCFKnights]

They used to be really common in South Florida, but horizontally mounted signals on mast arms combined with FYAs have killed new installations for some time now

https://www.google.com/maps/@26.4084234,-80.1865859,3a,15y,1.77h,93.3t/data=!3m6!1e1!3m4!1synALoMCj-X5oujrFYXJNRA!2e0!7i16384!8i8192

[lepidopteran]

Toledo, OH has a lot of these, but mostly with inline-5's.  Many date as far back as the '70s.

https://goo.gl/maps/YwjM1wtpzbWhnJzX8

Typically, one is on a mast-arm while the other is on a stanchion off to the side, or, as shown, mounted to another pole.

[UnumProvident101]

this intersection in Chattanooga, TN at Northpoint Blvd at Hixson Pike has them https://goo.gl/maps/NirUUWSUnDbkvgCf7

[Amtrakprod]

Why aren't these a thing? Doghouses are common for left turn protected and unprotected phases; however, they're rare for a protected right turn.

I made a mock-up of what I'm talking about (note this intersection/street does not exist):






There's actually one that I know of in Monroe, WA on US 2.

https://goo.gl/maps/zqqbwCvUBuFBLBH46

We have TONS (literally TONS) of these in MA


iPhone

[jakeroot]

Why aren't these a thing? Doghouses are common for left turn protected and unprotected phases; however, they're rare for a protected right turn.

Generally speaking, I would say these definitely are a thing. I think Illinois has the most examples of this, although using in-line 5-section towers instead of doghouses.

Puyallup had at least a few examples of "double doghouses" until about 5 years ago, when they started to replace them with 4-section bi-modal right turn signals, and FYAs for the left turns.

I'm still trying to locate an example of a quadruple doghouse: far left corner, two overhead, and another on the right corner. I think Spokane has an example somewhere.

[fwydriver405]

There's a few in Maine I could think of in my head:

Sanford, my hometown No longer the case as of May 2024
Augusta (this one's for a right turn)
Brewer
South Portland, 1
South Portland, 2 with an all arrow RYG signal
South Portland, 3 off the Casco Bay Bridge
Portland
Former assembly in Scarborough before Payne Rd got reconfigured
Not sure if this counts, but former assembly in Biddeford for the right turn


There are also a few double bimodal-4's around here as well, this is the only one I could think of currently:
Scarborough 

EDIT, left out one in Bangor... drive by this one on a daily basis.

[Revive 755]

NB Skinker Boulevard at Forest Park Parkway in St. Louis, MO has a double doghouse for a protected-permissive dual left.

I think the real reason two side by side doghouses are uncommon is many places use one signal head per lane, centered over the extension of the lane, which requires a three-section head between the two doghouses.  Plus many places use separate signs (usually yield signs unless in Wisconsin) to control right turns.

[fwydriver405]

8 doghouses (2 per approcach) on span wire at NY 31 at NY 96 in Pittsford NY. Bet there are more installations like this around NYS...

[Amtrakprod]

https://www.google.com/maps/@42.3779952,-71.1202343,3a,60y,202.41h,90t/data=!3m6!1e1!3m4!1sICgm0Stc9_DQAQyi3GD4Rg!2e0!7i16384!8i8192

[Big John]

https://www.google.com/maps/@42.3779952,-71.1202343,3a,60y,202.41h,90t/data=!3m6!1e1!3m4!1sICgm0Stc9_DQAQyi3GD4Rg!2e0!7i16384!8i8192

What am I looking for?  There are no doghouses in that view.

[jakeroot]

https://www.google.com/maps/@42.3779952,-71.1202343,3a,60y,202.41h,90t/data=!3m6!1e1!3m4!1sICgm0Stc9_DQAQyi3GD4Rg!2e0!7i16384!8i8192

What am I looking for?  There are no doghouses in that view.

Based on his last post in the 'Traffic Signal' thread, I think he's got his links mixed up again .

[Amtrakprod]

https://www.google.com/maps/@42.3779952,-71.1202343,3a,60y,202.41h,90t/data=!3m6!1e1!3m4!1sICgm0Stc9_DQAQyi3GD4Rg!2e0!7i16384!8i8192

What am I looking for?  There are no doghouses in that view.

Based on his last post in the 'Traffic Signal' thread, I think he's got his links mixed up again .

Yeah here's the issue: I switched to safari this week, and now all my google maps links keep switching up. Lemme modify it rq.


iPhone

[jakeroot]

https://www.google.com/maps/@42.3779952,-71.1202343,3a,60y,202.41h,90t/data=!3m6!1e1!3m4!1sICgm0Stc9_DQAQyi3GD4Rg!2e0!7i16384!8i8192

What am I looking for?  There are no doghouses in that view.

Based on his last post in the 'Traffic Signal' thread, I think he's got his links mixed up again .

Yeah here's the issue: I switched to safari this week, and now all my google maps links keep switching up. Lemme modify it rq.

Foolish move! Why change to Safari? I'm not aware of any platform where Safari is the only option.

[steviep24]

NY 33 at NY 386 in Rochester, NY
https://www.google.com/maps/@43.1441223,-77.7323106,3a,15y,185.42h,92.45t/data=!3m6!1e1!3m4!1sfbKeIdHo-9JX3aJwRwIwSg!2e0!7i16384!8i8192?hl=en&authuser=0

There are others in my area.

I've also seen this done with four section signals using bi modal arrows.

[Amtrakprod]

https://www.google.com/maps/@42.3779952,-71.1202343,3a,60y,202.41h,90t/data=!3m6!1e1!3m4!1sICgm0Stc9_DQAQyi3GD4Rg!2e0!7i16384!8i8192

What am I looking for?  There are no doghouses in that view.

Based on his last post in the 'Traffic Signal' thread, I think he's got his links mixed up again .

Yeah here's the issue: I switched to safari this week, and now all my google maps links keep switching up. Lemme modify it rq.

Foolish move! Why change to Safari? I'm not aware of any platform where Safari is the only option.

Haha, I'm a MacOS user, and decided I'd get rid of Chrome when Big Sur came out. Besides that I've had no issues, and it's actually faster.

Anyways, try this link! https://www.google.com/maps/@42.3643068,-71.1160976,3a,75y,14.62h,87.11t/data=!3m6!1e1!3m4!1sp9BCjOUx7UiDSvWbjlrK4A!2e0!7i16384!8i8192

[index]

These are pretty common in North Carolina, NCDOT makes use a lot of right turn doghouses.

what program did you use to mock that up?

Wondering this as well.

[jakeroot]

what program did you use to mock that up?

Wondering this as well.

I'm 98% sure he uses PowerPoint.

[Brandon]

You mean like these?  With towers, and not doghouses.

https://goo.gl/maps/quU5JBBfHtBkRGTh7
https://goo.gl/maps/uhvsx5PHQwxXCYvL7
https://goo.gl/maps/kFNEmq6Q9dw6P4HHA

[fwydriver405]

While looking around at bus signals near Buena Vista Dr in Orlando FL (in Disney World), spotted these sets of newly installed double doghouses:

1.
2.

[jakeroot]

You mean like these?  With towers, and not doghouses.

https://goo.gl/maps/quU5JBBfHtBkRGTh7
https://goo.gl/maps/uhvsx5PHQwxXCYvL7
https://goo.gl/maps/kFNEmq6Q9dw6P4HHA

I mentioned earlier that, in my opinion, Illinois likely has the most examples of this in the country. It's just that they use 5-section towers. The sheer number of right turn overlap signals in Illinois is simply outstanding.