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Author Topic: Right Idea, Wrong Sign  (Read 40430 times)

lepidopteran

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Re: Right Idea, Wrong Sign
« Reply #125 on: November 12, 2020, 09:59:41 PM »

How about this one, in Laurel, MD?

The "Right Turn Only" sign is typically used at the likes of a parking lot exit, where an impassable median and/or the angle make turning right the only practical option.  The usual signage for this setup is the curved "Only" arrow.
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jakeroot

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Re: Right Idea, Wrong Sign
« Reply #126 on: November 13, 2020, 01:49:24 PM »

How about this one, in Laurel, MD?

The "Right Turn Only" sign is typically used at the likes of a parking lot exit, where an impassable median and/or the angle make turning right the only practical option.  The usual signage for this setup is the curved "Only" arrow.

I would agree. This could also be used leading up to an intersection where the right lane is right-only, mounted on a post. "Right lane must turn right" is more common but I've seen "right turn only" used for that purpose before.
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STLmapboy

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Re: Right Idea, Wrong Sign
« Reply #127 on: November 14, 2020, 02:48:52 PM »

This isn't even the right idea. What the hell is this (W4-1) doing in front of the exit?
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jakeroot

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Re: Right Idea, Wrong Sign
« Reply #128 on: November 14, 2020, 05:40:48 PM »

This isn't even the right idea. What the hell is this (W4-1) doing in front of the exit?

I think it's to warn of the merge just past the exit.

That reminds me of this sign in Tacoma, WA that warns of the right lane ending. Oh, that right lane? Yeah, it's the one joining on the right. As in, none of the lanes visible when you see the sign. Just stupid, and yet further evidence that we continually shoot ourselves in the foot when it comes to encouraging zipper merging by signing merges and lane endings three hundred miles in advance.
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cjk374

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Re: Right Idea, Wrong Sign
« Reply #129 on: November 16, 2020, 06:51:11 AM »

This isn't even the right idea. What the hell is this (W4-1) doing in front of the exit?

Dixie Inn, LA. This merge sign is located at the required distance from the merging on-ramp. It looks weird, but it is proper & correct.
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STLmapboy

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Re: Right Idea, Wrong Sign
« Reply #130 on: November 16, 2020, 09:34:21 AM »

This isn't even the right idea. What the hell is this (W4-1) doing in front of the exit?

Dixie Inn, LA. This merge sign is located at the required distance from the merging on-ramp. It looks weird, but it is proper & correct.
Would it really be that hard to put it after the offramp though?
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jakeroot

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Re: Right Idea, Wrong Sign
« Reply #131 on: November 16, 2020, 04:02:59 PM »

This isn't even the right idea. What the hell is this (W4-1) doing in front of the exit?

Dixie Inn, LA. This merge sign is located at the required distance from the merging on-ramp. It looks weird, but it is proper & correct.
Would it really be that hard to put it after the offramp though?

It would be easy enough, of course, but the stupid rules say to place it a certain distance prior to a merge.

Then again, there could be an exception for situations like this, since I normally only see those merge signs (for RIRO-style ramps) after the off-ramp, like this
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wanderer2575

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Re: Right Idea, Wrong Sign
« Reply #132 on: November 16, 2020, 10:45:04 PM »

Something about this looks a little fishy.  Is it just me?

It's not just you. Those Keep Right signs are meant to go on a median nose. The correct way of doing this would have been to just make one sign: "Wide Loads Keep Right".

A contractor did something similar with a detour "assembly" on I-696 in Pleasant Ridge some years ago:


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wanderer2575

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Re: Right Idea, Wrong Sign
« Reply #133 on: November 16, 2020, 10:48:42 PM »

Northbound US-127 in Addison MI before a sign replacement project several years ago:


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roadfro

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Re: Right Idea, Wrong Sign
« Reply #134 on: November 19, 2020, 11:23:16 AM »

This isn't even the right idea. What the hell is this (W4-1) doing in front of the exit?

Dixie Inn, LA. This merge sign is located at the required distance from the merging on-ramp. It looks weird, but it is proper & correct.
Would it really be that hard to put it after the offramp though?

It would be easy enough, of course, but the stupid rules say to place it a certain distance prior to a merge.

Then again, there could be an exception for situations like this, since I normally only see those merge signs (for RIRO-style ramps) after the off-ramp, like this

Yeah, I'm sure it's a distance requirement issue, or perhaps incorrectly-interpreted distance

It doesn't seem entirely clear based on MUTCD Table 2C-4 what distance should be used... For that Dixie Inn one, if we were to use 65mph, footnote 2 indicates it would be the table's Condition A resulting in a 1200 foot placement for a merge—which is still before the exit, and seems quite unusual...


There's a lot of this phenomenon along Nevada's US 50 & US 50 Alt between Fernley & Fallon. This stretch is mostly four-lane divided, with many High-T intersections. So you'll see the merge/added lane warning sign notifying of the traffic entering on the left side from the side roads. In most (if not all) of these cases, the merge sign comes before the point of the mainline turn—and due to lack of space in the median, is often posted on the right side of the carriageway instead of the left (example).

By comparison, my US 50 Alt example is also 65mph. The measure tool in Google Maps indicated roughly 400 feet from the sign to the physical gore, which seems to correspond to the Table 2C-4 result for a Condition B 20mph deceleration.
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andrepoiy

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Re: Right Idea, Wrong Sign
« Reply #135 on: December 10, 2020, 05:00:03 PM »

Here is a sign somewhere near me. This sign in Ontario is used to indicate which lanes are exit lanes and are really only found on freeways. However, it appears this sign here is being used to indicate that the right lane becomes a turn lane. The correct sign would be a "RIGHT LANE MUST EXIT", so yeah, wrong sign right idea.

The smaller image on the bottom is an example of the correct usage of the sign.



« Last Edit: December 10, 2020, 05:03:49 PM by andrepoiy »
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PurdueBill

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Re: Right Idea, Wrong Sign
« Reply #136 on: December 12, 2020, 01:38:53 PM »

How about this one, in Laurel, MD?

The "Right Turn Only" sign is typically used at the likes of a parking lot exit, where an impassable median and/or the angle make turning right the only practical option.  The usual signage for this setup is the curved "Only" arrow.

I would agree. This could also be used leading up to an intersection where the right lane is right-only, mounted on a post. "Right lane must turn right" is more common but I've seen "right turn only" used for that purpose before.

One could do what Peabody, Mass does a lot and make a custom job for two lanes....it existed from when they redid the intersection and added the signal (late 80s I think I remember? If not, very early 90s) and there were signs on Lowell Street that also had "TURN ONLY".  The westbound LEFT TURN ONLY was changed to a LEFT LANE MUST TURN LEFT in very short order.  The RIGHT TURN ONLY sign eastbound is still there all these years later.  Other boobery when they added the signal included the cabinet being attached to the mast such that it completely blocked the sidewalk.  It was moved to its present location afterward.  The original ground-mounted eastbound signal, an 8-8-8 like the overheads, only lasted a year or two before being knocked down and replaced with a 12-12-12.   
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JoePCool14

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Re: Right Idea, Wrong Sign
« Reply #137 on: January 10, 2022, 11:47:04 AM »

Bringing this thread back from the dead!

IDOT has apparently never heard of chevrons, at least for Sheridan Rd here. I really don't like the practice of spamming these big arrow signs.

https://goo.gl/maps/fwQD1D4PnNBihLXf6
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Scott5114

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Re: Right Idea, Wrong Sign
« Reply #138 on: January 12, 2022, 12:47:27 AM »

Bringing this thread back from the dead!

IDOT has apparently never heard of chevrons, at least for Sheridan Rd here. I really don't like the practice of spamming these big arrow signs.

https://goo.gl/maps/fwQD1D4PnNBihLXf6

This vantage point is pretty confusing. https://www.google.com/maps/@42.1202712,-87.737,3a,75y,55.9h,87.63t/data=!3m6!1e1!3m4!1sG3GY1cMfTn6t_Qq0IsTNiw!2e0!7i16384!8i8192
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jeffandnicole

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Re: Right Idea, Wrong Sign
« Reply #139 on: January 12, 2022, 01:09:01 AM »

Bringing this thread back from the dead!

IDOT has apparently never heard of chevrons, at least for Sheridan Rd here. I really don't like the practice of spamming these big arrow signs.

https://goo.gl/maps/fwQD1D4PnNBihLXf6

This vantage point is pretty confusing. https://www.google.com/maps/@42.1202712,-87.737,3a,75y,55.9h,87.63t/data=!3m6!1e1!3m4!1sG3GY1cMfTn6t_Qq0IsTNiw!2e0!7i16384!8i8192

Hopefully the driver is looking to their left at the upcoming road, rather than to the right to see the trees.
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LilianaUwU

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Re: Right Idea, Wrong Sign
« Reply #140 on: January 14, 2022, 09:35:00 PM »

A "30 km" distance banner used as a 30 km/h advisory speed sign:

https://goo.gl/maps/o4XZPcJ3oChC4tQ4A

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