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National Boards => General Highway Talk => Traffic Control => Topic started by: tolbs17 on March 23, 2021, 07:06:50 PM

Title: Odd signalized intersections
Post by: tolbs17 on March 23, 2021, 07:06:50 PM
I find it super funny that this  (https://www.google.com/maps/@35.6155576,-77.3862802,3a,59.8y,285.62h,91.87t/data=!3m6!1e1!3m4!1sFEBQX-9wfJvWjFMiHmdrvg!2e0!7i13312!8i6656)intersection is signalized. Prolly cause it connects to Memorial Dr and there is many speeders here.

This (https://www.google.com/maps/@35.8065125,-77.3732901,3a,49.1y,7.15h,81.73t/data=!3m6!1e1!3m4!1sJaSNE1RMg4RMqZ7tij5sPg!2e0!7i13312!8i6656) intersection was signalized, but when the US 64 and NC 11 bypasses opened, AADT significantly declined, so they turned it into a 2-way stop.

https://ncdot.maps.arcgis.com/home/webmap/viewer.html?webmap=b7a26d6d8abd419f8c27f58a607b25a1

AADT on highway 11 business went from 8,800 to like 1,000.

and 64 from 5,000 to 1,000.
Title: Re: Odd signalized intersections
Post by: SkyPesos on March 23, 2021, 07:32:40 PM
A signalized intersection (https://www.google.com/maps/@39.1522467,-84.4553224,3a,75y,268.55h,83.09t/data=!3m6!1e1!3m4!1sEeTM9tuGQw1uQGlm5vG9wQ!2e0!7i16384!8i8192) between two lightly traveled roads in a purely residential area in my metro area, like the op example
Title: Re: Odd signalized intersections
Post by: tolbs17 on March 23, 2021, 07:50:27 PM
Quote from: SkyPesos on March 23, 2021, 07:32:40 PM
A signalized intersection (https://www.google.com/maps/@39.1522467,-84.4553224,3a,75y,268.55h,83.09t/data=!3m6!1e1!3m4!1sEeTM9tuGQw1uQGlm5vG9wQ!2e0!7i16384!8i8192) between two lightly traveled roads in a purely residential area in my metro area, like the op example
Looking back in the older years, there were more signals. and We have span signals in Pinetops.

https://www.google.com/maps/@35.7917401,-77.6389627,3a,75y,124.66h,94.08t/data=!3m6!1e1!3m4!1sbdv4Isfj5LXqaSUT4ONnCw!2e0!7i13312!8i6656

NC-11 by the Greenville Airport used to have one as well.
Title: Re: Odd signalized intersections
Post by: roadman65 on March 23, 2021, 08:03:50 PM
In Orlando, John Young Parkway has three of them and most were demanded in order for NIMBY's in the area to get the road built.  There is one just north of the busy JYP and LB McCleod Road intersection that is in the wake of the queue for that intersection and under normal circumstances would be too close to be allowed.  The road with the signal should really be a RIRO, but the City of Orlando made a deal with those living behind the resort hotel on the corner they would receive a light to replace another removed on LB McCleod Road east of there.

Then you have both CR Smith Road and Monte Carlo Trail that are side streets with a very low traffic counts on each, but part of the deal to get the City to build the missing link of JYP (as previously it was in two segments and the I-4 to SR 408 was the last to be completed) as the area in that corridor is a social class neighborhood and put up a big squawk to the city for even thinking of building it.
Title: Re: Odd signalized intersections
Post by: mrsman on March 24, 2021, 06:18:39 PM
Rosewood ave and Arden blvd in L.A. is a quiet residential corner that is signalized.  I simply can't imagine why it is signalized as both streets are relatively quiet.


https://www.google.com/maps/@34.0789642,-118.3260391,3a,75y,43.56h,80.86t/data=!3m6!1e1!3m4!1sJfWXBKCnH5HliIRjd-U9Ew!2e0!7i16384!8i8192
Title: Re: Odd signalized intersections
Post by: andrepoiy on March 24, 2021, 06:53:39 PM
This quiet residential intersection is not only signalled, it also has a left-turn arrow. I guess it is useful for the 2 hours that this intersection does get busy (like during rush hours) but for the other 22 hours, this intersection would be better off as a 4-way-stop. So much time wasted sitting at this light when there were no other cars, smh.

(https://i.imgur.com/UQfaJ5G.png)
Title: Re: Odd signalized intersections
Post by: tolbs17 on March 24, 2021, 07:11:16 PM
Quote from: andrepoiy on March 24, 2021, 06:53:39 PM
This quiet residential intersection is not only signalled, it also has a left-turn arrow. I guess it is useful for the 2 hours that this intersection does get busy (like during rush hours) but for the other 22 hours, this intersection would be better off as a 4-way-stop. So much time wasted sitting at this light when there were no other cars, smh.

(https://i.imgur.com/UQfaJ5G.png)
Ye, a 4 way stop or a roundabout would work.
Title: Re: Odd signalized intersections
Post by: tolbs17 on March 24, 2021, 09:54:19 PM
Should all off ramps be signalized from freeways?

Currently there's two in Greenville that are - NC 11/US-13 near Patheon, and the other one at US-13/264ALT.
Title: Re: Odd signalized intersections
Post by: Big John on March 24, 2021, 10:08:03 PM
^^ No, there are roundabout interchanges, and more so there are lightly travelled ramps, mainly in rural areas where a stop sign suffices.
Title: Re: Odd signalized intersections
Post by: tolbs17 on March 24, 2021, 10:11:22 PM
Quote from: Big John on March 24, 2021, 10:08:03 PM
^^ No, there are roundabout interchanges, and more so there are lightly travelled ramps, mainly in rural areas where a stop sign suffices.
Both wouldn't be appropriate for those junctions. Maybe at NC-102 but that was built as a parclo B4.

NC 43 wouldn't be a bad idea if it gets a roundabout interchange.
Title: Re: Odd signalized intersections
Post by: jeffandnicole on March 24, 2021, 10:32:29 PM
Quote from: tolbs17 on March 24, 2021, 09:54:19 PM
Should all off ramps be signalized from freeways?

Currently there's two in Greenville that are - NC 11/US-13 near Patheon, and the other one at US-13/264ALT.

Funny you would suggest that in a thread you created about traffic lights on low volume roads.

Many interchanges don't have much traffic, so no traffic lights would be warranted.
Title: Re: Odd signalized intersections
Post by: kphoger on March 25, 2021, 09:35:26 AM
Quote from: tolbs17 on March 24, 2021, 09:54:19 PM
Should all off ramps be signalized from freeways?

Of course not.  Geez.  Why would you signalize this (https://goo.gl/maps/1CaQEWQc2s8H9oXy6)?  Or, better yet, this (https://goo.gl/maps/Qx1Z7CdnzXw9rycs8)?




As for my own submission, I really don't think this signal in Del Rio, TX (https://goo.gl/maps/pMKWsA82mdEJrzaG9), is needed.
Title: Re: Odd signalized intersections
Post by: tolbs17 on March 25, 2021, 12:18:40 PM
Quote from: kphoger on March 25, 2021, 09:35:26 AM
Quote from: tolbs17 on March 24, 2021, 09:54:19 PM
Should all off ramps be signalized from freeways?

Of course not.  Geez.  Why would you signalize this (https://goo.gl/maps/1CaQEWQc2s8H9oXy6)?  Or, better yet, this (https://goo.gl/maps/Qx1Z7CdnzXw9rycs8)?




As for my own submission, I really don't think this signal in Del Rio, TX (https://goo.gl/maps/pMKWsA82mdEJrzaG9), is needed.
Make it a 2-way stop like they did in Bethel.
Title: Re: Odd signalized intersections
Post by: RobbieL2415 on March 26, 2021, 08:28:16 PM
This monstrosity.
https://maps.app.goo.gl/ye71HVQqNn1XeGRFA (https://maps.app.goo.gl/ye71HVQqNn1XeGRFA)

Also this one. Left turn is allowed, btw.
https://maps.app.goo.gl/c2Miw11SgA49ApDP7 (https://maps.app.goo.gl/c2Miw11SgA49ApDP7)
Title: Re: Odd signalized intersections
Post by: tolbs17 on March 26, 2021, 08:41:58 PM
Quote from: RobbieL2415 on March 26, 2021, 08:28:16 PM
Also this one. Left turn is allowed, btw.
https://maps.app.goo.gl/c2Miw11SgA49ApDP7 (https://maps.app.goo.gl/c2Miw11SgA49ApDP7)
should have put a free flowing right turn. That looks risky to me.
Title: Re: Odd signalized intersections
Post by: tolbs17 on March 26, 2021, 09:07:36 PM
https://www.google.com/maps/@35.8178579,-77.4524257,3a,75y,328.34h,78.8t/data=!3m6!1e1!3m4!1srdRObN8XWjEkB-vKOIRYMQ!2e0!7i13312!8i6656

I'm pretty sure this intersection was signalized (maybe not) before, but it only goes back to 2002. The freeway section opened in 1998.

AADT is too low to make it a 4-way stop or a roundabout.
Title: Re: Odd signalized intersections
Post by: paulthemapguy on March 26, 2021, 11:45:14 PM
Signal in the OP is probably because you can't see around the corner due to the position of the brick building.
Title: Re: Odd signalized intersections
Post by: tolbs17 on April 25, 2021, 05:01:17 PM
Quote from: kphoger on March 25, 2021, 09:35:26 AM
Quote from: tolbs17 on March 24, 2021, 09:54:19 PM
Should all off ramps be signalized from freeways?

Of course not.  Geez.  Why would you signalize this (https://goo.gl/maps/1CaQEWQc2s8H9oXy6)?  Or, better yet, this (https://goo.gl/maps/Qx1Z7CdnzXw9rycs8)?




As for my own submission, I really don't think this signal in Del Rio, TX (https://goo.gl/maps/pMKWsA82mdEJrzaG9), is needed.
Or here (https://www.google.com/maps/@35.8527384,-77.4616836,3a,75y,40.06h,78.7t/data=!3m6!1e1!3m4!1smiIVejRo26jHZbau66wb5g!2e0!7i13312!8i6656) even. Or even here (https://www.google.com/maps/@35.8949061,-76.5379639,3a,75y,116.47h,79.61t/data=!3m6!1e1!3m4!1sXmBgHAFyDIK3QJDbK64zqA!2e0!7i13312!8i6656)!

These are slightly more urban compared to the ones you showed off.
Title: Re: Odd signalized intersections
Post by: tolbs17 on April 25, 2021, 06:07:58 PM
Why was this off ramp signalized first then downgraded to stop signs and then signalized once again?  :hmmm:

I don't understand.

https://www.google.com/maps/@35.7833368,-78.4427316,3a,75y,31.08h,92.58t/data=!3m6!1e1!3m4!1s8Vw2xkDl8W7LCk3q2Rg2iQ!2e0!7i13312!8i6656
Title: Re: Odd signalized intersections
Post by: andarcondadont on April 25, 2021, 09:54:58 PM
This has probably already been mentioned in a different thread, but Selma Alabama has some unusual (https://www.google.com/maps/@32.4112856,-87.005479,3a,90y,304.78h,100.76t/data=!3m6!1e1!3m4!1sfYK-gLYG4SkY0okJDhwoVw!2e0!7i13312!8i6656) signalized (https://www.google.com/maps/@32.4134169,-87.0056074,3a,75y,4.94h,85.57t/data=!3m6!1e1!3m4!1seBcHv0Yr3Btyb7pkERsBiA!2e0!7i13312!8i6656) intersections (https://www.google.com/maps/@32.4185441,-87.0264911,3a,89.4y,306.66h,75.42t/data=!3m6!1e1!3m4!1sXTXlVv6bCs-hMVY-XkYGLA!2e0!7i13312!8i6656) as they don't seem to be very busy.
Title: Re: Odd signalized intersections
Post by: EpicRoadways on April 25, 2021, 10:30:32 PM
Quote from: tolbs17 on April 25, 2021, 06:07:58 PM
Why was this off ramp signalized first then downgraded to stop signs and then signalized once again?  :hmmm:

I don't understand.

https://www.google.com/maps/@35.7833368,-78.4427316,3a,75y,31.08h,92.58t/data=!3m6!1e1!3m4!1s8Vw2xkDl8W7LCk3q2Rg2iQ!2e0!7i13312!8i6656
Was this intersection ever actually signalized before the stop signs were put in or were the poles just put in place for future signals?  If the latter is the case, this is something that happens pretty commonly when there's expected to be development that will increase traffic volumes at an intersection in the near future. Unless I'm missing something I can only see GSV images from 2012 (stop signs), 2015, and 2019 (both with signals).
Title: Re: Odd signalized intersections
Post by: tolbs17 on April 25, 2021, 11:34:16 PM
Quote from: EpicRoadways on April 25, 2021, 10:30:32 PM
Quote from: tolbs17 on April 25, 2021, 06:07:58 PM
Why was this off ramp signalized first then downgraded to stop signs and then signalized once again?  :hmmm:

I don't understand.

https://www.google.com/maps/@35.7833368,-78.4427316,3a,75y,31.08h,92.58t/data=!3m6!1e1!3m4!1s8Vw2xkDl8W7LCk3q2Rg2iQ!2e0!7i13312!8i6656
Was this intersection ever actually signalized before the stop signs were put in or were the poles just put in place for future signals?  If the latter is the case, this is something that happens pretty commonly when there's expected to be development that will increase traffic volumes at an intersection in the near future. Unless I'm missing something I can only see GSV images from 2012 (stop signs), 2015, and 2019 (both with signals).
In 2010 and 2011 it was signalized.
Title: Re: Odd signalized intersections
Post by: andrepoiy on April 26, 2021, 01:03:43 PM
Here is an intersection which I found was interesting:

This road has 3 lanes and a left-turn-lane and right-turn-lane. Usually a road of this size would have a left-turn signal when it intersects another major road, in this case it does.

But no, this only gets a permissive right turn.


(https://i.imgur.com/0C34632.png)
Title: Re: Odd signalized intersections
Post by: Caps81943 on April 27, 2021, 12:44:35 AM
This one in NoVA (Herndon) that I randomly found one day is just between a very minor artery (25 mph) and a quiet neighborhood street:

https://www.google.com/maps/@38.9857389,-77.397046,3a,82.5y,186.74h,89.59t/data=!3m6!1e1!3m4!1s-2s9MD4izqDLTkZrT8coeA!2e0!7i16384!8i8192

Wisconsin, a generally very signal-conservative state already, has this intersection between two country roads outside Hayward (yes I know there's a small casino there but still):

https://www.google.com/maps/@45.997215,-91.384158,3a,75y,87.43h,87.71t/data=!3m6!1e1!3m4!1s8Xv_h6cdZ1x3_MNvFb_3YA!2e0!7i13312!8i6656


I can't imagine there's ever enough traffic in downtown Goodland, KS to warrant not one but two traffic lights:

https://www.google.com/maps/@39.3479911,-101.7114803,3a,75y,288.51h,80.52t/data=!3m6!1e1!3m4!1s5knBdnzkTpzlzHLu6413-w!2e0!7i3328!8i1664

I may think of others, but those are the ones I've found that I recall.
Title: Re: Odd signalized intersections
Post by: HTM Duke on April 27, 2021, 03:21:45 AM
Quote from: Caps81943 on April 27, 2021, 12:44:35 AM
This one in NoVA (Herndon) that I randomly found one day is just between a very minor artery (25 mph) and a quiet neighborhood street:

https://www.google.com/maps/@38.9857389,-77.397046,3a,82.5y,186.74h,89.59t/data=!3m6!1e1!3m4!1s-2s9MD4izqDLTkZrT8coeA!2e0!7i16384!8i8192 (https://www.google.com/maps/@38.9857389,-77.397046,3a,82.5y,186.74h,89.59t/data=!3m6!1e1!3m4!1s-2s9MD4izqDLTkZrT8coeA!2e0!7i16384!8i8192)

Looking at Google, I see that there's an elementary school near the east end of Builder's Rd.  I'd wager a guess and say that signal was installed to make it easier for buses and other school traffic to reach and depart from said school.
Title: Re: Odd signalized intersections
Post by: mrsman on April 27, 2021, 07:14:21 AM
Quote from: HTM Duke on April 27, 2021, 03:21:45 AM
Quote from: Caps81943 on April 27, 2021, 12:44:35 AM
This one in NoVA (Herndon) that I randomly found one day is just between a very minor artery (25 mph) and a quiet neighborhood street:

https://www.google.com/maps/@38.9857389,-77.397046,3a,82.5y,186.74h,89.59t/data=!3m6!1e1!3m4!1s-2s9MD4izqDLTkZrT8coeA!2e0!7i16384!8i8192 (https://www.google.com/maps/@38.9857389,-77.397046,3a,82.5y,186.74h,89.59t/data=!3m6!1e1!3m4!1s-2s9MD4izqDLTkZrT8coeA!2e0!7i16384!8i8192)

Looking at Google, I see that there's an elementary school near the east end of Builder's Rd.  I'd wager a guess and say that signal was installed to make it easier for buses and other school traffic to reach and depart from said school.

Many intersections that do not have enough traffic to normally justify a signal are placed near schools so that it is perceived as being safer for children to cross the street. And even if Crestview isn't all that busy, it could still be a street with a decent amount of speeding
Title: Re: Odd signalized intersections
Post by: Big John on April 27, 2021, 02:13:58 PM
Quote from: HTM Duke on April 27, 2021, 03:21:45 AM
Quote from: Caps81943 on April 27, 2021, 12:44:35 AM
This one in NoVA (Herndon) that I randomly found one day is just between a very minor artery (25 mph) and a quiet neighborhood street:

https://www.google.com/maps/@38.9857389,-77.397046,3a,82.5y,186.74h,89.59t/data=!3m6!1e1!3m4!1s-2s9MD4izqDLTkZrT8coeA!2e0!7i16384!8i8192 (https://www.google.com/maps/@38.9857389,-77.397046,3a,82.5y,186.74h,89.59t/data=!3m6!1e1!3m4!1s-2s9MD4izqDLTkZrT8coeA!2e0!7i16384!8i8192)

Looking at Google, I see that there's an elementary school near the east end of Builder's Rd.  I'd wager a guess and say that signal was installed to make it easier for buses and other school traffic to reach and depart from said school.

Apparently met the school signal warrant.
Title: Re: Odd signalized intersections
Post by: tolbs17 on May 01, 2021, 05:49:51 PM
I think this  (https://www.google.com/maps/@35.6576155,-77.3642814,3a,75y,97.63h,86.21t/data=!3m6!1e1!3m4!1sSJX9-v5IY2Gpoff7_-_Vag!2e0!7i13312!8i6656) junction can do without a signal. When the northwest bypass gets built, they should definitely remove it. AADT is low enough to just have stop signs.

The other one should stay signalized because of the factory that's there.

Also, what I find funny here in Wilson, that this (https://www.google.com/maps/@35.7106307,-78.0020892,3a,75y,162.14h,70t/data=!3m6!1e1!3m4!1sP2z1EaSTB7VGrNyHzD8gFg!2e0!7i13312!8i6656) junction is signalized and only has one lane.
Title: Re: Odd signalized intersections
Post by: mrsman on May 04, 2021, 07:54:59 AM
Quote from: tolbs17 on May 01, 2021, 05:49:51 PM
I think this  (https://www.google.com/maps/@35.6576155,-77.3642814,3a,75y,97.63h,86.21t/data=!3m6!1e1!3m4!1sSJX9-v5IY2Gpoff7_-_Vag!2e0!7i13312!8i6656) junction can do without a signal. When the northwest bypass gets built, they should definitely remove it. AADT is low enough to just have stop signs.

The other one should stay signalized because of the factory that's there.

Also, what I find funny here in Wilson, that this (https://www.google.com/maps/@35.7106307,-78.0020892,3a,75y,162.14h,70t/data=!3m6!1e1!3m4!1sP2z1EaSTB7VGrNyHzD8gFg!2e0!7i13312!8i6656) junction is signalized and only has one lane.

For the second one, even if traffic is low, traffic coming off the off-ramp will have a hard time making a left because of the hill.  It will be hard for them to see cross-traffic.

So either a signal or an all-way stop seems necessary.
Title: Re: Odd signalized intersections
Post by: tolbs17 on May 04, 2021, 07:56:54 AM
Quote from: mrsman on May 04, 2021, 07:54:59 AM
Quote from: tolbs17 on May 01, 2021, 05:49:51 PM
I think this  (https://www.google.com/maps/@35.6576155,-77.3642814,3a,75y,97.63h,86.21t/data=!3m6!1e1!3m4!1sSJX9-v5IY2Gpoff7_-_Vag!2e0!7i13312!8i6656) junction can do without a signal. When the northwest bypass gets built, they should definitely remove it. AADT is low enough to just have stop signs.

The other one should stay signalized because of the factory that's there.

Also, what I find funny here in Wilson, that this (https://www.google.com/maps/@35.7106307,-78.0020892,3a,75y,162.14h,70t/data=!3m6!1e1!3m4!1sP2z1EaSTB7VGrNyHzD8gFg!2e0!7i13312!8i6656) junction is signalized and only has one lane.

For the second one, even if traffic is low, traffic coming off the off-ramp will have a hard time making a left because of the hill.  It will be hard for them to see cross-traffic.

So either a signal or an all-way stop seems necessary.
One in Wilson, right?
Title: Re: Odd signalized intersections
Post by: mrsman on May 04, 2021, 10:36:22 AM
Quote from: tolbs17 on May 04, 2021, 07:56:54 AM
Quote from: mrsman on May 04, 2021, 07:54:59 AM
Quote from: tolbs17 on May 01, 2021, 05:49:51 PM
I think this  (https://www.google.com/maps/@35.6576155,-77.3642814,3a,75y,97.63h,86.21t/data=!3m6!1e1!3m4!1sSJX9-v5IY2Gpoff7_-_Vag!2e0!7i13312!8i6656) junction can do without a signal. When the northwest bypass gets built, they should definitely remove it. AADT is low enough to just have stop signs.

The other one should stay signalized because of the factory that's there.

Also, what I find funny here in Wilson, that this (https://www.google.com/maps/@35.7106307,-78.0020892,3a,75y,162.14h,70t/data=!3m6!1e1!3m4!1sP2z1EaSTB7VGrNyHzD8gFg!2e0!7i13312!8i6656) junction is signalized and only has one lane.

For the second one, even if traffic is low, traffic coming off the off-ramp will have a hard time making a left because of the hill.  It will be hard for them to see cross-traffic.

So either a signal or an all-way stop seems necessary.
One in Wilson, right?

Yes.
Title: Re: Odd signalized intersections
Post by: tolbs17 on May 04, 2021, 11:39:03 AM
Quote from: mrsman on May 04, 2021, 10:36:22 AM
Quote from: tolbs17 on May 04, 2021, 07:56:54 AM
Quote from: mrsman on May 04, 2021, 07:54:59 AM
Quote from: tolbs17 on May 01, 2021, 05:49:51 PM
I think this  (https://www.google.com/maps/@35.6576155,-77.3642814,3a,75y,97.63h,86.21t/data=!3m6!1e1!3m4!1sSJX9-v5IY2Gpoff7_-_Vag!2e0!7i13312!8i6656) junction can do without a signal. When the northwest bypass gets built, they should definitely remove it. AADT is low enough to just have stop signs.

The other one should stay signalized because of the factory that's there.

Also, what I find funny here in Wilson, that this (https://www.google.com/maps/@35.7106307,-78.0020892,3a,75y,162.14h,70t/data=!3m6!1e1!3m4!1sP2z1EaSTB7VGrNyHzD8gFg!2e0!7i13312!8i6656) junction is signalized and only has one lane.

For the second one, even if traffic is low, traffic coming off the off-ramp will have a hard time making a left because of the hill.  It will be hard for them to see cross-traffic.

So either a signal or an all-way stop seems necessary.
One in Wilson, right?

Yes.
But the other side is not signalized.
Title: Re: Odd signalized intersections
Post by: US 89 on May 04, 2021, 06:05:18 PM
Quote from: tolbs17 on May 04, 2021, 11:39:03 AM
Quote from: mrsman on May 04, 2021, 10:36:22 AM
Quote from: tolbs17 on May 04, 2021, 07:56:54 AM
Quote from: mrsman on May 04, 2021, 07:54:59 AM
Quote from: tolbs17 on May 01, 2021, 05:49:51 PM
I think this  (https://www.google.com/maps/@35.6576155,-77.3642814,3a,75y,97.63h,86.21t/data=!3m6!1e1!3m4!1sSJX9-v5IY2Gpoff7_-_Vag!2e0!7i13312!8i6656) junction can do without a signal. When the northwest bypass gets built, they should definitely remove it. AADT is low enough to just have stop signs.

The other one should stay signalized because of the factory that's there.

Also, what I find funny here in Wilson, that this (https://www.google.com/maps/@35.7106307,-78.0020892,3a,75y,162.14h,70t/data=!3m6!1e1!3m4!1sP2z1EaSTB7VGrNyHzD8gFg!2e0!7i13312!8i6656) junction is signalized and only has one lane.

For the second one, even if traffic is low, traffic coming off the off-ramp will have a hard time making a left because of the hill.  It will be hard for them to see cross-traffic.

So either a signal or an all-way stop seems necessary.
One in Wilson, right?

Yes.
But the other side is not signalized.

So? That side doesn't have the visibility issues nearly to the same extent.
Title: Re: Odd signalized intersections
Post by: tolbs17 on May 08, 2021, 11:04:06 PM
Should all exit ramps (that have one signal on whatever side) have signals on both sides?
Title: Re: Odd signalized intersections
Post by: hotdogPi on May 09, 2021, 08:20:37 AM
Quote from: tolbs17 on May 08, 2021, 11:04:06 PM
Should all exit ramps (that have one signal on whatever side) have signals on both sides?

No. Having two signals makes it impossible to have coordinated signals in both directions simultaneously.
Title: Re: Odd signalized intersections
Post by: Mapmikey on May 09, 2021, 09:06:32 AM
Quote from: tolbs17 on March 26, 2021, 09:07:36 PM
https://www.google.com/maps/@35.8178579,-77.4524257,3a,75y,328.34h,78.8t/data=!3m6!1e1!3m4!1srdRObN8XWjEkB-vKOIRYMQ!2e0!7i13312!8i6656

I'm pretty sure this intersection was signalized (maybe not) before, but it only goes back to 2002. The freeway section opened in 1998.

AADT is too low to make it a 4-way stop or a roundabout.

Pretty sure the US 64-NC 42 jct was not signalized.  It wasn't in the late 1970s.
Title: Re: Odd signalized intersections
Post by: roadfro on May 09, 2021, 07:12:44 PM
Quote from: 1 on May 09, 2021, 08:20:37 AM
Quote from: tolbs17 on May 08, 2021, 11:04:06 PM
Should all exit ramps (that have one signal on whatever side) have signals on both sides?

No. Having two signals makes it impossible to have coordinated signals in both directions simultaneously.

Say for like a standard diamond interchange? It's odd to have a signal on one side but not the other, but that doesn't mean you have to have a signal on both sides.

Having signals at both ramp intersections doesn't make it impossible to have coordinated signals. But you might not be able to both directions of the arterial road flowing at the same time through the interchange–but a few diamond interchange phasing schemes exist to minimize the stops and delays associated with interchange signals. However, in many implementations of coordinated signal corridors, you don't always have both directions going simultaneously anyways (lead-lag phasing generally results in better signal progression in a corridor where left turn phasing is frequently used)
Title: Re: Odd signalized intersections
Post by: tolbs17 on May 10, 2021, 01:11:58 AM
Quote from: roadfro on May 09, 2021, 07:12:44 PM
Quote from: 1 on May 09, 2021, 08:20:37 AM
Quote from: tolbs17 on May 08, 2021, 11:04:06 PM
Should all exit ramps (that have one signal on whatever side) have signals on both sides?

No. Having two signals makes it impossible to have coordinated signals in both directions simultaneously.

Say for like a standard diamond interchange? It's odd to have a signal on one side but not the other, but that doesn't mean you have to have a signal on both sides.

Having signals at both ramp intersections doesn't make it impossible to have coordinated signals. But you might not be able to both directions of the arterial road flowing at the same time through the interchange–but a few diamond interchange phasing schemes exist to minimize the stops and delays associated with interchange signals. However, in many implementations of coordinated signal corridors, you don't always have both directions going simultaneously anyways (lead-lag phasing generally results in better signal progression in a corridor where left turn phasing is frequently used)
See I-795/US-301 in Wilson, NC.
Title: Re: Odd signalized intersections
Post by: webny99 on May 10, 2021, 05:13:16 PM
This five-way intersection (https://www.google.com/maps/@43.1646875,-77.6913924,3a,75y,44.67h,87.25t/data=!3m6!1e1!3m4!1sliCe7ZUC9Nb-a7XdxB-Lqg!2e0!7i16384!8i8192!5m1!1e1) is an interesting one.
Title: Re: Odd signalized intersections
Post by: tolbs17 on May 10, 2021, 06:42:44 PM
I think this signal can be removed.

https://www.google.com/maps/@35.6737323,-77.6396808,3a,76.4y,338.15h,86.87t/data=!3m7!1e1!3m5!1sjOuXYHceVMAVohu4OG2O3A!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DjOuXYHceVMAVohu4OG2O3A%26cb_client%3Dsearch.revgeo_and_fetch.gps%26w%3D96%26h%3D64%26yaw%3D162.21832%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656!5m1!1e1
Title: Re: Odd signalized intersections
Post by: tolbs17 on May 20, 2021, 09:31:20 PM
Quote from: mrsman on May 04, 2021, 07:54:59 AM
Quote from: tolbs17 on May 01, 2021, 05:49:51 PM
I think this  (https://www.google.com/maps/@35.6576155,-77.3642814,3a,75y,97.63h,86.21t/data=!3m6!1e1!3m4!1sSJX9-v5IY2Gpoff7_-_Vag!2e0!7i13312!8i6656) junction can do without a signal. When the northwest bypass gets built, they should definitely remove it. AADT is low enough to just have stop signs.

The other one should stay signalized because of the factory that's there.

Also, what I find funny here in Wilson, that this (https://www.google.com/maps/@35.7106307,-78.0020892,3a,75y,162.14h,70t/data=!3m6!1e1!3m4!1sP2z1EaSTB7VGrNyHzD8gFg!2e0!7i13312!8i6656) junction is signalized and only has one lane.

For the second one, even if traffic is low, traffic coming off the off-ramp will have a hard time making a left because of the hill.  It will be hard for them to see cross-traffic.

So either a signal or an all-way stop seems necessary.
So, this  (https://www.google.com/maps/@35.6973792,-77.9735318,3a,75y,324.37h,92.51t/data=!3m6!1e1!3m4!1s_T-2Jw0UFy5Aok2qD_o90w!2e0!7i13312!8i6656)one should also be signalized
Title: Re: Odd signalized intersections
Post by: fillup420 on May 21, 2021, 01:36:57 PM
This 5-way in Charlotte NC has always been a confusing one

https://www.google.com/maps/@35.2041422,-80.8182641,3a,59.9y,324.26h,91.32t/data=!3m7!1e1!3m5!1s8HzNaBS-DBujaqtC8vA-NA!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3D8HzNaBS-DBujaqtC8vA-NA%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D247.84094%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192\

Also looks like the city trasit dept was having a meeting about it lol
Title: Re: Odd signalized intersections
Post by: tolbs17 on May 21, 2021, 03:43:28 PM
What would a four-way (or even a two-way) stop do over here? Will there be less accidents?

https://www.google.com/maps/@35.5850485,-77.5618077,3a,75y,139.05h,77.9t/data=!3m6!1e1!3m4!1s22vDhIADJyIgnKd71-Byrg!2e0!7i13312!8i6656
Title: Re: Odd signalized intersections
Post by: tolbs17 on May 27, 2021, 09:44:59 PM
https://www.google.com/maps/@35.6706602,-77.957182,3a,75y,310.35h,86.35t/data=!3m6!1e1!3m4!1sOF_yJdNFhShioyY8R3DBow!2e0!7i13312!8i6656

This one is signalized because it has so many lanes I assume and would be hard to see traffic coming from the right?
Title: Re: Odd signalized intersections
Post by: jakeroot on May 29, 2021, 03:14:39 AM
I've never understood why S 12th & Pine in Tacoma (https://goo.gl/maps/sHTABpfknMPFKi9U6) was signalized. Pine is a neighborhood street with mostly unsigned intersections, yet it gets a full signal at S 12th.
Title: Re: Odd signalized intersections
Post by: tolbs17 on June 09, 2021, 07:31:09 PM
https://www.google.com/maps/@35.653575,-77.7754688,3a,89.3y,319.63h,79.51t/data=!3m6!1e1!3m4!1s9piwmwYC5NktJBdTHc9ucQ!2e0!7i13312!8i6656

This can be downgraded to a two-way stop.
Title: Re: Odd signalized intersections
Post by: kphoger on June 10, 2021, 09:03:13 AM
Quote from: tolbs17 on June 09, 2021, 07:31:09 PM
https://www.google.com/maps/@35.653575,-77.7754688,3a,89.3y,319.63h,79.51t/data=!3m6!1e1!3m4!1s9piwmwYC5NktJBdTHc9ucQ!2e0!7i13312!8i6656

This can be downgraded to a two-way stop.

Go for it.
Title: Re: Odd signalized intersections
Post by: tolbs17 on June 10, 2021, 12:29:18 PM
Quote from: kphoger on June 10, 2021, 09:03:13 AM
Quote from: tolbs17 on June 09, 2021, 07:31:09 PM
https://www.google.com/maps/@35.653575,-77.7754688,3a,89.3y,319.63h,79.51t/data=!3m6!1e1!3m4!1s9piwmwYC5NktJBdTHc9ucQ!2e0!7i13312!8i6656

This can be downgraded to a two-way stop.

Go for it.
so, what do I do?
Title: Re: Odd signalized intersections
Post by: kphoger on June 10, 2021, 12:33:45 PM
Quote from: tolbs17 on June 10, 2021, 12:29:18 PM

Quote from: kphoger on June 10, 2021, 09:03:13 AM

Quote from: tolbs17 on June 09, 2021, 07:31:09 PM
https://www.google.com/maps/@35.653575,-77.7754688,3a,89.3y,319.63h,79.51t/data=!3m6!1e1!3m4!1s9piwmwYC5NktJBdTHc9ucQ!2e0!7i13312!8i6656

This can be downgraded to a two-way stop.

Go for it.

so, what do I do?

Downgrade it.  Rent the necessary heavy equipment as you see fit.
Title: Re: Odd signalized intersections
Post by: tolbs17 on June 10, 2021, 12:34:48 PM
Quote from: kphoger on June 10, 2021, 12:33:45 PM
Quote from: tolbs17 on June 10, 2021, 12:29:18 PM

Quote from: kphoger on June 10, 2021, 09:03:13 AM

Quote from: tolbs17 on June 09, 2021, 07:31:09 PM
https://www.google.com/maps/@35.653575,-77.7754688,3a,89.3y,319.63h,79.51t/data=!3m6!1e1!3m4!1s9piwmwYC5NktJBdTHc9ucQ!2e0!7i13312!8i6656

This can be downgraded to a two-way stop.

Go for it.

so, what do I do?

Downgrade it.  Rent the necessary heavy equipment as you see fit.
Yes, I mean how do I contact NCDOT about this intersection
Title: Re: Odd signalized intersections
Post by: kphoger on June 10, 2021, 01:08:46 PM
Quote from: tolbs17 on June 10, 2021, 12:34:48 PM

Quote from: kphoger on June 10, 2021, 12:33:45 PM

Quote from: tolbs17 on June 10, 2021, 12:29:18 PM

Quote from: kphoger on June 10, 2021, 09:03:13 AM

Quote from: tolbs17 on June 09, 2021, 07:31:09 PM
https://www.google.com/maps/@35.653575,-77.7754688,3a,89.3y,319.63h,79.51t/data=!3m6!1e1!3m4!1s9piwmwYC5NktJBdTHc9ucQ!2e0!7i13312!8i6656

This can be downgraded to a two-way stop.

Go for it.

so, what do I do?

Downgrade it.  Rent the necessary heavy equipment as you see fit.

Yes, I mean how do I contact NCDOT about this intersection

https://www.ncdot.gov/contact/Pages/form.aspx?UnitName=PIO&sourceUrl=/contact/

Knock yourself out, and be sure to let us know the results.
Title: Re: Odd signalized intersections
Post by: tolbs17 on June 10, 2021, 03:31:27 PM
Quote from: kphoger on June 10, 2021, 01:08:46 PM
Quote from: tolbs17 on June 10, 2021, 12:34:48 PM

Quote from: kphoger on June 10, 2021, 12:33:45 PM

Quote from: tolbs17 on June 10, 2021, 12:29:18 PM

Quote from: kphoger on June 10, 2021, 09:03:13 AM

Quote from: tolbs17 on June 09, 2021, 07:31:09 PM
https://www.google.com/maps/@35.653575,-77.7754688,3a,89.3y,319.63h,79.51t/data=!3m6!1e1!3m4!1s9piwmwYC5NktJBdTHc9ucQ!2e0!7i13312!8i6656

This can be downgraded to a two-way stop.

Go for it.

so, what do I do?

Downgrade it.  Rent the necessary heavy equipment as you see fit.

Yes, I mean how do I contact NCDOT about this intersection

https://www.ncdot.gov/contact/Pages/form.aspx?UnitName=PIO&sourceUrl=/contact/

Knock yourself out, and be sure to let us know the results.
Just emailed them about the intersection. Hopefully I get a good response
Title: Re: Odd signalized intersections
Post by: wanderer2575 on June 10, 2021, 03:47:03 PM
Here's a six-leg intersection in Lyon Township MI with multi-faced fixtures on one span wire, and amazingly they are all well-positioned over all the lanes.

https://goo.gl/maps/k9KXnbTAiLJs2DU96
Title: Re: Odd signalized intersections
Post by: tolbs17 on June 17, 2021, 02:56:02 PM
Someone on Reddit said both of these junctions should be signalized. The question is, why?

https://www.google.com/maps/@35.5994622,-77.5567656,3a,86y,290.92h,92.94t/data=!3m6!1e1!3m4!1s8Hs1cO_LpfvOyRb05_Q-Vg!2e0!7i13312!8i6656!5m1!1e1
Title: Re: Odd signalized intersections
Post by: jakeroot on June 17, 2021, 04:50:22 PM
Quote from: tolbs17 on June 17, 2021, 02:56:02 PM
Someone on Reddit said both of these junctions should be signalized. The question is, why?

https://www.google.com/maps/@35.5994622,-77.5567656,3a,86y,290.92h,92.94t/data=!3m6!1e1!3m4!1s8Hs1cO_LpfvOyRb05_Q-Vg!2e0!7i13312!8i6656!5m1!1e1

I think the better question is why you have such high standards for signalized intersections. You seem to want to dispose of quite a lot of signals in North Carolina.

Wesley Church Rd could be high speed, making lefts off the freeway harder to make. Plus visibility may not be great either, for either turn (both need to clear traffic from the left).
Title: Re: Odd signalized intersections
Post by: tolbs17 on June 27, 2021, 11:21:16 PM
https://www.google.com/maps/@35.6079834,-77.3482933,3a,75y,269.51h,89.87t/data=!3m7!1e1!3m5!1ssj0yrwH2-6oHIPMojI4FKw!2e0!5s20160701T000000!7i13312!8i6656

Another one here. Not sure why that is......
Title: Re: Odd signalized intersections
Post by: STLmapboy on June 30, 2021, 09:39:47 PM
Quote from: tolbs17 on June 27, 2021, 11:21:16 PM
https://www.google.com/maps/@35.6079834,-77.3482933,3a,75y,269.51h,89.87t/data=!3m7!1e1!3m5!1ssj0yrwH2-6oHIPMojI4FKw!2e0!5s20160701T000000!7i13312!8i6656

Another one here. Not sure why that is......
I mean, the neighboring retirement community and elementary school both pose a good reason...
Title: Re: Odd signalized intersections
Post by: STLmapboy on June 30, 2021, 09:41:13 PM
Quote from: tolbs17 on May 01, 2021, 05:49:51 PM
I think this  (https://www.google.com/maps/@35.6576155,-77.3642814,3a,75y,97.63h,86.21t/data=!3m6!1e1!3m4!1sSJX9-v5IY2Gpoff7_-_Vag!2e0!7i13312!8i6656) junction can do without a signal. When the northwest bypass gets built, they should definitely remove it.

You sure about that? (https://www.google.com/maps/@35.6572886,-77.3641392,3a,53.5y,330.08h,82.71t/data=!3m6!1e1!3m4!1srkFz9k9S4aISu48vz1o2Sw!2e0!7i13312!8i6656/)
Title: Re: Odd signalized intersections
Post by: SkyPesos on June 30, 2021, 09:48:52 PM
I think the location of this signal (https://www.google.com/maps/@39.2882683,-84.4670131,3a,58.7y,164.99h,92.56t/data=!3m6!1e1!3m4!1snA1Oo4LZUjKMfUAJulHt-Q!2e0!7i13312!8i6656) is really odd and should be removed and replaced with 4 way stops immediately!

/s
Title: Re: Odd signalized intersections
Post by: tolbs17 on June 30, 2021, 11:02:00 PM
Quote from: STLmapboy on June 30, 2021, 09:41:13 PM
Quote from: tolbs17 on May 01, 2021, 05:49:51 PM
I think this  (https://www.google.com/maps/@35.6576155,-77.3642814,3a,75y,97.63h,86.21t/data=!3m6!1e1!3m4!1sSJX9-v5IY2Gpoff7_-_Vag!2e0!7i13312!8i6656) junction can do without a signal. When the northwest bypass gets built, they should definitely remove it.

You sure about that? (https://www.google.com/maps/@35.6572886,-77.3641392,3a,53.5y,330.08h,82.71t/data=!3m6!1e1!3m4!1srkFz9k9S4aISu48vz1o2Sw!2e0!7i13312!8i6656/)
Depending on the AADT, which I'm sure will be lower. But it prolly won't get removed because of the factory nearby.

But it probably won't get removed due to visibility issues and high AADT on the arterial.

It's the same reason why US-264/US-301 and the US-70 (Goldsboro Bypass)/US-13 is siganlized.
Title: Re: Odd signalized intersections
Post by: tolbs17 on July 24, 2021, 01:16:42 PM
A superstreet  (http://prntscr.com/1fayulf)was initially proposed at the Briarcliff Dr intersection.

Then a year later, the plans were changed to a traffic light (https://prnt.sc/1faz8e5).

The school provides a good reason why that intersection is worth being signalized.
Title: Re: Odd signalized intersections
Post by: US 89 on August 04, 2021, 04:02:14 PM
Quote from: tolbs17 on July 24, 2021, 01:16:42 PM
A superstreet  (http://prntscr.com/1fayulf)was initially proposed at the Briarcliff Dr intersection.

Then a year later, the plans were changed to a traffic light (https://prnt.sc/1faz8e5).

The school provides a good reason why that intersection is worth being signalized.

You're really going to have to give more context. The only street named Briarcliff I know off the top of my head is in Atlanta and it definitely does not look like that.

I figured you might have meant Greenville NC since that's your profile city, and was able to use Google to find a Briarcliff Dr with an intersection that looks sort of like the ones in your images. Then I spent several minutes trying to find the school you were talking about. That is way more effort than most people on here probably care to make.

If anyone else is as confused as I was, here is a handy link to the intersection I assume he's talking about: https://www.google.com/maps/@35.5938138,-77.4294195,230m/data=!3m1!1e3
Title: Re: Odd signalized intersections
Post by: jakeroot on August 04, 2021, 05:18:58 PM
Quote from: US 89 on August 04, 2021, 04:02:14 PM
Quote from: tolbs17 on July 24, 2021, 01:16:42 PM
A superstreet  (http://prntscr.com/1fayulf)was initially proposed at the Briarcliff Dr intersection.

Then a year later, the plans were changed to a traffic light (https://prnt.sc/1faz8e5).

The school provides a good reason why that intersection is worth being signalized.

You're really going to have to give more context. The only street named Briarcliff I know off the top of my head is in Atlanta and it definitely does not look like that.

I figured you might have meant Greenville NC since that's your profile city, and was able to use Google to find a Briarcliff Dr with an intersection that looks sort of like the ones in your images. Then I spent several minutes trying to find the school you were talking about. That is way more effort than most people on here probably care to make.

If anyone else is as confused as I was, here is a handy link to the intersection I assume he's talking about: https://www.google.com/maps/@35.5938138,-77.4294195,230m/data=!3m1!1e3

Bloody nora. Thanks for the detective work. Didn't realize we had to solve a riddle to respond to tolbs's posts. I know I pretty much immediately scanned past this post the first time.

But more to the point: what in the world makes the proposal an "odd signalized intersection"?

Un/fortunately, given his recent absence (why may or may not have been forced), we may never know...
Title: Re: Odd signalized intersections
Post by: kphoger on August 04, 2021, 05:31:59 PM
Quote from: US 89 on August 04, 2021, 04:02:14 PM
Then I spent several minutes trying to find the school you were talking about.

Lakeforest Elementary School (https://goo.gl/maps/s1xr3EcT5mPuAdyw9), for the 2.6 people interested.
Title: Re: Odd signalized intersections
Post by: tolbs17 on November 02, 2021, 08:30:59 AM
Quote from: kphoger on June 10, 2021, 01:08:46 PM
Quote from: tolbs17 on June 10, 2021, 12:34:48 PM

Quote from: kphoger on June 10, 2021, 12:33:45 PM

Quote from: tolbs17 on June 10, 2021, 12:29:18 PM

Quote from: kphoger on June 10, 2021, 09:03:13 AM

Quote from: tolbs17 on June 09, 2021, 07:31:09 PM
https://www.google.com/maps/@35.653575,-77.7754688,3a,89.3y,319.63h,79.51t/data=!3m6!1e1!3m4!1s9piwmwYC5NktJBdTHc9ucQ!2e0!7i13312!8i6656

This can be downgraded to a two-way stop.

Go for it.

so, what do I do?

Downgrade it.  Rent the necessary heavy equipment as you see fit.

Yes, I mean how do I contact NCDOT about this intersection

https://www.ncdot.gov/contact/Pages/form.aspx?UnitName=PIO&sourceUrl=/contact/

Knock yourself out, and be sure to let us know the results.
And as of September 2021, it's still signalized.

https://www.google.com/maps/@35.6534732,-77.775398,3a,37.1y,313.69h,91.3t/data=!3m6!1e1!3m4!1sW_OuB5bgW7sN0SLkqjyCew!2e0!7i16384!8i8192
Title: Re: Odd signalized intersections
Post by: STLmapboy on December 12, 2021, 11:33:45 PM
Quote from: tolbs17 on November 02, 2021, 08:30:59 AM
Quote from: kphoger on June 10, 2021, 01:08:46 PM
Quote from: tolbs17 on June 10, 2021, 12:34:48 PM

Quote from: kphoger on June 10, 2021, 12:33:45 PM

Quote from: tolbs17 on June 10, 2021, 12:29:18 PM

Quote from: kphoger on June 10, 2021, 09:03:13 AM

Quote from: tolbs17 on June 09, 2021, 07:31:09 PM
https://www.google.com/maps/@35.653575,-77.7754688,3a,89.3y,319.63h,79.51t/data=!3m6!1e1!3m4!1s9piwmwYC5NktJBdTHc9ucQ!2e0!7i13312!8i6656

This can be downgraded to a two-way stop.

Go for it.

so, what do I do?

Downgrade it.  Rent the necessary heavy equipment as you see fit.

Yes, I mean how do I contact NCDOT about this intersection

https://www.ncdot.gov/contact/Pages/form.aspx?UnitName=PIO&sourceUrl=/contact/

Knock yourself out, and be sure to let us know the results.
And as of September 2021, it's still signalized.

https://www.google.com/maps/@35.6534732,-77.775398,3a,37.1y,313.69h,91.3t/data=!3m6!1e1!3m4!1sW_OuB5bgW7sN0SLkqjyCew!2e0!7i16384!8i8192
Maybe there's a reason for that.
Title: Re: Odd signalized intersections
Post by: tolbs17 on January 04, 2022, 05:10:13 PM
Don't know if I posted this already but a signal is planned to come to the Frog Level intersection and US-13/264A!! I was thinking two right turn lanes would be the best for right turns from Frog Level road, but I'm fine with what they are planning.

https://connect.ncdot.gov/letting/Pages/Letting-Details.aspx?let_type=2&let_date=2021-12-08%2000:00:00