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re: Blinking yellow left turn arrows will become widespread in Baton Rouge area streets
Posted on 4/28/21 at 10:02 am to The Boat
Posted on 4/28/21 at 10:02 am to The Boat
We have them in swla also. They work pretty well...assuming the person at the front of the line isn’t a complete moron.
This post was edited on 4/28/21 at 10:03 am
0
Posted on 4/28/21 at 10:03 am to Open Your Eyes
Flashing yellow lights still turn solid yellow before they turn red. They also still give you a solid green arrow at the beginning or end of the cycle so you still have a protected turn through the intersection.
Posted on 4/28/21 at 10:06 am to goofball
A blinking yellow arrow? 
Never witnessed such sorcery.
Never witnessed such sorcery.
Posted on 4/28/21 at 10:36 am to pvilleguru
quote:
If you replace a circular green with a FYA, then you can phase it so that the left turn turns red when the opposing through does. The left turn trap would happen when the adjacent through had to turn red because the opposing LT was turning a protected green. The opposing through would stay green in that scenario while your permissive LT had to turn red because it was tied to the adjacent through.
All of this is true whether the signal is a solid green light or a flashing yellow arrow. As the poster above said, the only thing that changes in the entire sequence is a flashing yellow arrow replaced a solid green light and this sign:
Posted on 4/28/21 at 10:45 am to goofball
Lake Charles has the blinking yellow left turn lights everywhere and it is great. No more waiting for the green when the coast is clear.
Posted on 4/28/21 at 10:46 am to Open Your Eyes
quote:
All of this is true whether the signal is a solid green light or a flashing yellow arrow.
No, it isn't. You can't have a circular green and a circular yellow displayed at the same time for the same approach.
This post was edited on 4/28/21 at 10:49 am
Posted on 4/28/21 at 10:55 am to Enadious
quote:
It's a separate blinking yellow arrow. I don't think it will be that challenging. Turn left allowed after yielding to traffic.
Yeah, well, a circle isn't all that challenging either.
Posted on 4/28/21 at 11:00 am to pvilleguru
quote:
You can't have a circular green and a circular yellow displayed at the same time for the same approach.
What actions are the cars taking in this scenario you’re describing?
For 2 cars going in the opposite direction? Yes, you certainly can.
For 2 cars going in the same direction but doing different actions? Yes, you certainly can.
For 2 cars going in the same direction and doing the same action? No, you can’t.
All 3 of the above scenarios are true whether the light is a solid green or flashing yellow.
Posted on 4/28/21 at 11:03 am to goofball
Been having that here in Houston. It’s awesome.
Posted on 4/28/21 at 11:05 am to Open Your Eyes
I think he's saying that Left turn yield on green sign is always synchronized to start/stop with the thru lane, whereas a flashing yellow arrow can be independent
this video helped me picture it
left turn trap
this video helped me picture it
left turn trap
Posted on 4/28/21 at 11:05 am to Open Your Eyes
quote:
What actions are the cars taking in this scenario you’re describing?
North through is turning red.
North left turn remains permissive.
South through remains green.
South left turn is about to turn protected green.
Posted on 4/28/21 at 11:10 am to pvilleguru
While I cannot prove it, the number of cases we get with similar facts lead me to believe some motorists in line in the turn lane don't really pay attention to the ball vs arrow. They just see that the car(s) in front turned, and they turn too. We get too many of these irreconcilable stories for this not to be happening. Maybe the flashing yellow will cut into this.
Posted on 4/28/21 at 11:11 am to BlackCoffeeKid
quote:
Remember that time they removed the light at East Boyd and Burbank for about 3 weeks?
That went well.
While the engineering was solid, they failed to account for the human factor.
Posted on 4/28/21 at 11:14 am to TigerstuckinMS
Does this generally work on large intersections or is it more effective on smaller intersections?
If the left turn lane from Northbound Airline onto Westbound Old Hammond can actually find breaks in traffic to use the permissive left between its green protected left and red light instead of just having to wait an entire light cycle so three cars in the right turn lane can go and one car in the left turn lane can make a slow-arse u-turn, that would be fantastic.
Of course, it'll work until one of the dummies in this thread who can't grasp the concept gets their arse t-boned by an oncoming 18 wheeler heading to I-12 from the Amazon facility.
If the left turn lane from Northbound Airline onto Westbound Old Hammond can actually find breaks in traffic to use the permissive left between its green protected left and red light instead of just having to wait an entire light cycle so three cars in the right turn lane can go and one car in the left turn lane can make a slow-arse u-turn, that would be fantastic.
Of course, it'll work until one of the dummies in this thread who can't grasp the concept gets their arse t-boned by an oncoming 18 wheeler heading to I-12 from the Amazon facility.
This post was edited on 4/28/21 at 11:16 am
Posted on 4/28/21 at 11:15 am to AlxTgr
quote:
Maybe the flashing yellow will cut into this.
It's not foolproof, but it's been proved to reduce left turn crashed by 15-35%. One of the cheapest, safest things you can do outside of going protected only.
Posted on 4/28/21 at 11:24 am to TigerstuckinMS
quote:
Does this generally work on large intersections or is it more effective on smaller intersections?
It can work anywhere that can have a permissive LT. If there are places that don't have the sight distance, then it will not work and should remain protected only.
Posted on 4/28/21 at 11:28 am to Open Your Eyes
A 5-section head can not prevent the LT trap, and the MUTCD specifically says "if a separate LT signal face is being operated in a protected/permissive LT mode, a circular green signal indication shall not be used in that face." (Section 4D.20.02)
This post was edited on 4/28/21 at 11:29 am
Posted on 4/28/21 at 11:34 am to pvilleguru
Works fine here in Lake Charles,
Posted on 4/28/21 at 11:35 am to baytiger11
quote:
think he's saying that Left turn yield on green sign is always synchronized to start/stop with the thru lane, whereas a flashing yellow arrow can be independent
It’s been a while since I’ve lived in an area with the yield on green lights, but I don’t recall this being true at all.
quote:
this video helped me picture it
I know it wasn’t your point in posting this, but in the video the crash happens regardless of whether lane 5 has a flashing yellow or solid green.
Posted on 4/28/21 at 11:37 am to goofball
Welcome to the rest of the country.
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