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Author Topic: Traffic signal  (Read 311496 times)

Brandon

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Re: Traffic signal
« Reply #1950 on: October 01, 2018, 07:21:32 PM »

Wow an at grade taxiway.  Impressive.

There's not very many of them. The only other one I knew of in CA was down at the San Diego Airport (now closed off): https://goo.gl/qSui7J

AK has quite a few, and there's at least one in WA.

At-grade runway, Gibraltar: https://goo.gl/maps/dfAfvrH5YZw
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Re: Traffic signal
« Reply #1951 on: October 01, 2018, 08:02:34 PM »

Wow an at grade taxiway.  Impressive.

There's not very many of them*. The only other one I knew of in CA was down at the San Diego Airport (now closed off): https://goo.gl/qSui7J

AK has quite a few, and there's at least one in WA.

At-grade runway, Gibraltar: https://goo.gl/maps/dfAfvrH5YZw

*In the US. I should have been more specific. That Gibraltar example is pretty cool, though. I've seen it before, yet it never ceases to amaze me.
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ErmineNotyours

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Re: Traffic signal
« Reply #1952 on: October 02, 2018, 08:53:17 AM »

A couple of crossings in Seattle (non-signalized)

https://goo.gl/maps/gNpPpDHRD7r

https://goo.gl/maps/R2Y46uGpJ952
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jakeroot

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Re: Traffic signal
« Reply #1953 on: October 02, 2018, 12:07:52 PM »

A couple of crossings in Seattle (non-signalized)

https://goo.gl/maps/gNpPpDHRD7r

https://goo.gl/maps/R2Y46uGpJ952

I guess that makes sense, with the museum being right there. Odd they never bothered to install a warning sign. Though I seem to recall crossings being a rather big deal when they do finally happen, so I guess there's no point.
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mrsman

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Re: Traffic signal
« Reply #1954 on: October 07, 2018, 05:45:19 PM »

In a long gone era, there was also one in Orange County.  What is now the Great Park was once MCAS El Toro.  In the WWII era, when they first hastily built the air station, they had a traffic signal to stop traffic along US 101 - Trabuco Road - for planes to use the runway.  As the area became suburbanized post-war, and when the freeway was built south of the Air Station, they closed the routing of Trabuco Road through the base.
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Revive 755

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Re: Traffic signal
« Reply #1955 on: October 08, 2018, 06:45:32 PM »

Charles City, Iowa, has a couple signals of note:

* This one on US 18 appears to be mainly for pedestrians- I'm guessing the side street indications alternate between flashing red and steady red?

* At the US 18/IA 14 intersection, southbound has one head for each movement with all arrows, including the straight movement.


There's also a couple five-sections on IA 122 on the west side of Mason City that are odd - time of day phasing prior to flashing yellow arrows?

(Edited to fix link)
« Last Edit: October 08, 2018, 09:34:32 PM by Revive 755 »
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jakeroot

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Re: Traffic signal
« Reply #1956 on: October 08, 2018, 08:24:20 PM »

There's also a couple five-sections on IA 122 on the west side of Mason City that are odd - time of day phasing prior to flashing yellow arrows?

Your link was a duplicate of your second link, but I think I found what you're talking about: https://goo.gl/kECCmA

I have seen such displays a couple of times, in both Colorado and Washington. In Colorado, they were time-of-day "yield on green" signals, and the very few in Washington were former "yield on green" signals that had their faces changed out to permanently run in protected-only mode.

Example from WA: https://goo.gl/FbGs2S (cannot find an example in CO at the moment, but I assure you, there's some).

As for your first link, that's just bizarre. No idea what prompted that sort of creativity. And your second link isn't compliant with the 2009 MUTCD, despite being installed after its release.
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paulthemapguy

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Re: Traffic signal
« Reply #1957 on: October 08, 2018, 10:54:09 PM »

There's also a couple five-sections on IA 122 on the west side of Mason City that are odd - time of day phasing prior to flashing yellow arrows?

Your link was a duplicate of your second link, but I think I found what you're talking about: https://goo.gl/kECCmA

LOL I actually a took a picture of this EXACT signal so I could ask the people in this thread what the hell is going on with it.  That's a crazy coincidence.


IMG_5924 by Paul Drives, on Flickr

So anyway, yeah, wtf is this thing?
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jakeroot

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Re: Traffic signal
« Reply #1958 on: October 09, 2018, 01:02:06 AM »

There's also a couple five-sections on IA 122 on the west side of Mason City that are odd - time of day phasing prior to flashing yellow arrows?

Your link was a duplicate of your second link, but I think I found what you're talking about: https://goo.gl/kECCmA

LOL I actually a took a picture of this EXACT signal so I could ask the people in this thread what the hell is going on with it.  That's a crazy coincidence.

https://farm2.staticflickr.com/1820/43218704495_4249de8ce8_c.jpg

So anyway, yeah, wtf is this thing?

I'm putting my money on "converted yield-on-green signal". I've seen 5-section FYAs, but the top two faces were always double red arrows. Street View suggests the bottom two faces are arrows, and the two above that are orbs, which would fit this right in line with my train of thought.

It could still operate based on time-of-day, but it's odd they wouldn't swap out the green orb for a flashing yellow arrow, since every other display is an arrow.
« Last Edit: October 09, 2018, 01:04:57 AM by jakeroot »
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ErmineNotyours

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Re: Traffic signal
« Reply #1959 on: October 09, 2018, 11:45:05 AM »

This has been up for a few years, but I'm questioning it now.  One head for each lane, including the BAT lane on the right, but the BAT lane additionally has a transit-only signal. https://goo.gl/maps/Xx8YmcXUoK92 The queue jump is for the Metro 102 and 169 for making a quick left lane change for turning into the South Renton Park & Ride, though most drivers try to make the lane changes before the light.

Non-transit traffic shoudln't be going straight through on the BAT lane, so they don't need a non-transit light, except for drivers who never turn right on red.  I guess more is better for visibility, but this seems redundant.
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jakeroot

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Re: Traffic signal
« Reply #1960 on: October 09, 2018, 01:08:31 PM »

This has been up for a few years, but I'm questioning it now.  One head for each lane, including the BAT lane on the right, but the BAT lane additionally has a transit-only signal. https://goo.gl/maps/Xx8YmcXUoK92 The queue jump is for the Metro 102 and 169 for making a quick left lane change for turning into the South Renton Park & Ride, though most drivers try to make the lane changes before the light.

Non-transit traffic shoudln't be going straight through on the BAT lane, so they don't need a non-transit light, except for drivers who never turn right on red.  I guess more is better for visibility, but this seems redundant.

I wouldn't say it's unusual to have a green orb over every lane, including those that exclusively turn right. Maybe their original plan was for that right lane to be HOV instead of bus-only.

I do know the transit signal couldn't over the lane, as they wouldn't want to confuse drivers who might be able to see it from the middle lane. Would have been a gap, then, between the middle lane's signal and the transit signal. I think placing the through signals on the lane lines would have been superior, rather than signal-per-lane.
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riiga

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Re: Traffic signal
« Reply #1961 on: October 09, 2018, 04:47:31 PM »

Does the US not use distinct transit signals? This is something that has not been standardized in Europe, but most countries have their own variant of transit signals so that regular drivers won't be confused in a situation such as this.
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Big John

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Re: Traffic signal
« Reply #1962 on: October 09, 2018, 05:10:55 PM »

^^ Yes they do:
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ErmineNotyours

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Re: Traffic signal
« Reply #1963 on: October 09, 2018, 10:10:46 PM »

Does the US not use distinct transit signals? This is something that has not been standardized in Europe, but most countries have their own variant of transit signals so that regular drivers won't be confused in a situation such as this.

The only symbolic traffic signal I've seen in Seattle for rubber-tired buses instead of street cars or light rail is here.
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Rothman

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Re: Traffic signal
« Reply #1964 on: October 10, 2018, 09:47:43 AM »

Have them in the Albany, NY area.
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traffic light guy

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Re: Traffic signal
« Reply #1965 on: October 10, 2018, 04:20:36 PM »

Does the US not use distinct transit signals? This is something that has not been standardized in Europe, but most countries have their own variant of transit signals so that regular drivers won't be confused in a situation such as this.

The only symbolic traffic signal I've seen in Seattle for rubber-tired buses instead of street cars or light rail is here.


What about these weird boxes that light up when the train is crossing
https://www.google.com/maps/@40.1410753,-75.116411,3a,75y,337.11h,97.31t/data=!3m7!1e1!3m5!1sNDtKRatydBkq9-BBwCXiqg!2e0!5s20171101T000000!7i13312!8i6656?hl=en&authuser=0
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kphoger

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Re: Traffic signal
« Reply #1966 on: October 10, 2018, 04:41:54 PM »

Does the US not use distinct transit signals? This is something that has not been standardized in Europe, but most countries have their own variant of transit signals so that regular drivers won't be confused in a situation such as this.

The only symbolic traffic signal I've seen in Seattle for rubber-tired buses instead of street cars or light rail is here.


What about these weird boxes that light up when the train is crossing
https://www.google.com/maps/@40.1410753,-75.116411,3a,75y,337.11h,97.31t/data=!3m7!1e1!3m5!1sNDtKRatydBkq9-BBwCXiqg!2e0!5s20171101T000000!7i13312!8i6656?hl=en&authuser=0


??  What I see is not a traffic signal, nor is it specifically for buses or streetcars.
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paulthemapguy

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Re: Traffic signal
« Reply #1967 on: October 11, 2018, 03:39:04 PM »

Does the US not use distinct transit signals? This is something that has not been standardized in Europe, but most countries have their own variant of transit signals so that regular drivers won't be confused in a situation such as this.

The only symbolic traffic signal I've seen in Seattle for rubber-tired buses instead of street cars or light rail is here.

The light rail in Baltimore has transit signals for the top and bottom indications, but there is no central triangle indication. 
https://goo.gl/maps/mAPiENxRXJG2

SF Muni has similar two-section signal heads along King Street, but the top indication is red. https://goo.gl/maps/jUPT9mWQ5452
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jakeroot

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Re: Traffic signal
« Reply #1968 on: October 11, 2018, 04:05:22 PM »

Does the US not use distinct transit signals? This is something that has not been standardized in Europe, but most countries have their own variant of transit signals so that regular drivers won't be confused in a situation such as this.

The only symbolic traffic signal I've seen in Seattle for rubber-tired buses instead of street cars or light rail is here.

The light rail in Baltimore has transit signals for the top and bottom indications, but there is no central triangle indication. 
https://goo.gl/maps/mAPiENxRXJG2

SF Muni has similar two-section signal heads along King Street, but the top indication is red. https://goo.gl/maps/jUPT9mWQ5452

The one's I'm familiar with in Tacoma are closer in relation to the SF version, but use amber and white: https://goo.gl/MsQehp (I believe these are the standard indications, and might be the same used in Baltimore, just with a different signal face style)

It's possible those signals in SF are actually amber, but appear red on Street View. From several angles, the signals in Tacoma look red, but I know from seeing them in person, they're amber.
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traffic light guy

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Re: Traffic signal
« Reply #1969 on: October 11, 2018, 08:18:43 PM »

I can't help but to not stop thinking about Lower Merion's signal poles. All the signal arms in the township are silver, and don't have a single spec of rust. Can someone help me figure this out, there are many old signals in this area, but all the poles are bright and silver. Are these poles original or new. I've mentioned this a few times before and all I get are arguments based on what type of metal these poles are.

Here's an intersection on google maps:
https://www.google.com/maps/@40.0054821,-75.2217476,3a,27.8y,295.19h,101.2t/data=!3m6!1e1!3m4!1sCenRXfXfCMt5ZNbcV9uBrg!2e0!7i13312!8i6656
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US 89

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Re: Traffic signal
« Reply #1970 on: October 11, 2018, 08:29:14 PM »

Does the US not use distinct transit signals? This is something that has not been standardized in Europe, but most countries have their own variant of transit signals so that regular drivers won't be confused in a situation such as this.

The only symbolic traffic signal I've seen in Seattle for rubber-tired buses instead of street cars or light rail is here.

The light rail in Baltimore has transit signals for the top and bottom indications, but there is no central triangle indication. 
https://goo.gl/maps/mAPiENxRXJG2

SF Muni has similar two-section signal heads along King Street, but the top indication is red. https://goo.gl/maps/jUPT9mWQ5452

Salt Lake City's light rail (TRAX) uses indications just like those used in Baltimore. https://goo.gl/maps/1vY4JCyisyv
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Brandon

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Re: Traffic signal
« Reply #1971 on: October 11, 2018, 10:30:13 PM »

I can't help but to not stop thinking about Lower Merion's signal poles. All the signal arms in the township are silver, and don't have a single spec of rust. Can someone help me figure this out, there are many old signals in this area, but all the poles are bright and silver. Are these poles original or new. I've mentioned this a few times before and all I get are arguments based on what type of metal these poles are.

Here's an intersection on google maps:
https://www.google.com/maps/@40.0054821,-75.2217476,3a,27.8y,295.19h,101.2t/data=!3m6!1e1!3m4!1sCenRXfXfCMt5ZNbcV9uBrg!2e0!7i13312!8i6656

As Iíve said before about such signals, the poles are probably aluminum.
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traffic light guy

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Re: Traffic signal
« Reply #1972 on: October 11, 2018, 10:43:28 PM »

I can't help but to not stop thinking about Lower Merion's signal poles. All the signal arms in the township are silver, and don't have a single spec of rust. Can someone help me figure this out, there are many old signals in this area, but all the poles are bright and silver. Are these poles original or new. I've mentioned this a few times before and all I get are arguments based on what type of metal these poles are.

Here's an intersection on google maps:
https://www.google.com/maps/@40.0054821,-75.2217476,3a,27.8y,295.19h,101.2t/data=!3m6!1e1!3m4!1sCenRXfXfCMt5ZNbcV9uBrg!2e0!7i13312!8i6656

As Iíve said before about such signals, the poles are probably aluminum.
It still amazes me how they don't have a spec of rust after being up for several decades

LG-M327

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MNHighwayMan

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Re: Traffic signal
« Reply #1973 on: October 11, 2018, 10:53:29 PM »

As Iíve said before about such signals, the poles are probably aluminum.
It still amazes me how they don't have a spec of rust after being up for several decades

Aluminum doesn't rust.
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jakeroot

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Re: Traffic signal
« Reply #1974 on: October 11, 2018, 11:06:50 PM »

The bottom edges of the mast arm seem to be showing evidence of corrosion, which would indicate aluminum.
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