Doghouse Louver Confusion

[TheArkansasRoadgeek]

So, on GSV in Little Rock looking at the intersection of (N&S) Rodney Parham Rd. and W. Markham St. I've noticed that the doghouse signals have louvers that are position wrong (possibly). They both look like they have louvers for a right instead of a left (which, in theory those two signals would control).

https://www.google.com/maps/@34.7531901,-92.3671833,3a,15y,262.37h,94.28t/data=!3m6!1e1!3m4!1sTL4BhgzMgOL4m_1AVcYzCQ!2e0!7i13312!8i6656

[jakeroot]

Is the confusion that traffic going north along Rodney Parham Rd might confuse the doghouse as their own?

I've seen louvres used to ensure traffic in the through lanes cannot see the doghouse, but only when used in combination with Dallas Phasing.

[roadfro]

I can't seem to find a street view where I can see the circular elements of the dog house displayed at all, so I'm not sure why there are louvers there at all.

I could see louvers being used on westbound Markham so that northbound drivers on Rodney Parham don't confuse those signals for their own (due to the curve). But if that were the case, louvers should be used on all the through indications, not just those on the doghouse.

[jakeroot]

I can't seem to find a street view where I can see the circular elements of the dog house displayed at all, so I'm not sure why there are louvers there at all.

If you go east a bit on Markham, and go back a few years, you can see it: https://goo.gl/2efk6p

[TheArkansasRoadgeek]

Yeah the signals in the islands (the doghouses on the mast arms). The east doghouse should have the arrows on its left side and the yellow and green switched.

[jakeroot]

I'm confused. Are we not talking about the louvres for the left turn signal? The only other doghouses are right-turn filter signals for both directions of Markham, and they appear to be designed properly with the arrows on the right.

[freebrickproductions]

It appears that the left turn doghouses are designed for Dallas Phasing, so they should probably just go ahead and replace them with FYAs.

[TheArkansasRoadgeek]

I'm confused. Are we not talking about the louvres for the left turn signal? The only other doghouses are right-turn filter signals for both directions of Markham, and they appear to be designed properly with the arrows on the right.

I think I fucked up, due to GSV's angles of it's shots (not the best), so the doghouses seem to be fine (on the mast arms). They have the yellow and greens louvered, instead of the arrows. But, I would still think that they would louver the arrows to eliminate confusion from the adjacent lanes.

It appears that the left turn doghouses are designed for Dallas Phasing, so they should probably just go ahead and replace them with FYAs.

I believe the doghouses have an FYA function with the yellow arrow that they already have.

[jakeroot]

I'm confused. Are we not talking about the louvres for the left turn signal? The only other doghouses are right-turn filter signals for both directions of Markham, and they appear to be designed properly with the arrows on the right.

I think I fucked up, due to GSV's angles of it's shots (not the best), so the doghouses seem to be fine (on the mast arms). They have the yellow and greens louvered, instead of the arrows. But, I would still think that they would louver the arrows to eliminate confusion from the adjacent lanes.

Oh, I see what you're getting at. Yeah, in that sense, the whole display should really be louvred (although both east-west displays should just be replaced with flashing yellow arrows).

[TheArkansasRoadgeek]

I'm confused. Are we not talking about the louvres for the left turn signal? The only other doghouses are right-turn filter signals for both directions of Markham, and they appear to be designed properly with the arrows on the right.

I think I fucked up, due to GSV's angles of it's shots (not the best), so the doghouses seem to be fine (on the mast arms). They have the yellow and greens louvered, instead of the arrows. But, I would still think that they would louver the arrows to eliminate confusion from the adjacent lanes.

Oh, I see what you're getting at. Yeah, in that sense, the whole display should really be louvred (although both east-west displays should just be replaced with flashing yellow arrows).

I forgot to add, they have the whole RYG sections louvered, but not the arrows. what if it's a visual thing?

[Amtrakprod]

I found another using PV signals, but it was later correctly updated. https://www.google.com/maps/@38.6239459,-90.2756855,3a,75y,252.17h,89.67t/data=!3m6!1e1!3m4!1s825yyi2QgF_hGxxLIGqOEw!2e0!7i13312!8i6656

[jakeroot]

I found another using PV signals, but it was later correctly updated. https://www.google.com/maps/@38.6239459,-90.2756855,3a,75y,252.17h,89.67t/data=!3m6!1e1!3m4!1s825yyi2QgF_hGxxLIGqOEw!2e0!7i13312!8i6656

OT: Missouri uses a rounded backplate that I rarely see used anywhere else. All that I'm used to in WA, BC, and the DMV are square corners.