Anonymous
05/23/2020 20:19
Subject: When did they add traffic signals to 270 entrance lanes?
I saw them on exit 6 this week. I predict huge back ups on route 28...shady grove road etc
Anonymous
05/23/2020 07:30
Subject: When did they add traffic signals to 270 entrance lanes?
I noticed them on every on-ramp yesterday from the Clarksburg exit down to Montgomery Village. Not sure how far they extend down past that.
Anonymous
05/21/2020 17:20
Subject: When did they add traffic signals to 270 entrance lanes?
Anonymous wrote:Then you aren’t looking.Anonymous wrote:Anonymous wrote:Upper 270 Gaith/Germ
I live in Gaithersburg and am on 270 almost every day. Haven't seen them at all.
You’re telling me I’m not seeing traffic signals on the entrance lanes I’m driving on? I seriously doubt that.
Anonymous
05/21/2020 17:19
Subject: When did they add traffic signals to 270 entrance lanes?
Definitely to control traffic on 270 but how are these things getting passed without scrutiny?
Anonymous
04/16/2020 23:36
Subject: When did they add traffic signals to 270 entrance lanes?
Then you aren’t looking.Anonymous wrote:Anonymous wrote:Upper 270 Gaith/Germ
I live in Gaithersburg and am on 270 almost every day. Haven't seen them at all.
Anonymous
04/10/2020 22:00
Subject: Re:When did they add traffic signals to 270 entrance lanes?
I saw the burlap covered one at the on ramp for 270 south at Montgomery village/quince orchard. I wondering what that was!
Anonymous
04/01/2020 10:19
Subject: Re:When did they add traffic signals to 270 entrance lanes?
They have them in Minneapolis too- they seem to work well. Of course I suspect there may be more effective underlying design and monitoring there too.
Anonymous
04/01/2020 10:17
Subject: When did they add traffic signals to 270 entrance lanes?
Anonymous wrote:Upper 270 Gaith/Germ
I live in Gaithersburg and am on 270 almost every day. Haven't seen them at all.
Anonymous
04/01/2020 10:16
Subject: When did they add traffic signals to 270 entrance lanes?
Yes, I saw them north of Germantown this past weekend. The lights are not operational and are covered right now with burlap.
They've had these in California for 25+ years. During rush hour, they will control how many cars enter the freeway. In California, it's one car per light. The light completes a green-red cycle every 15-20 seconds. With two lanes on the on-ramp, that means during rush hour you have 6 to 8 vehicles entering the freeway from the on-ramp every minute. Cars wait in line to enter the freeway on the on-ramp.
It's all about managing traffic flow in the goal of preventing or lessening back-ups. Too many cars entering the freeway at once = slow down and congestion around on-ramps.
They've had these in California for 25+ years. During rush hour, they will control how many cars enter the freeway. In California, it's one car per light. The light completes a green-red cycle every 15-20 seconds. With two lanes on the on-ramp, that means during rush hour you have 6 to 8 vehicles entering the freeway from the on-ramp every minute. Cars wait in line to enter the freeway on the on-ramp.
It's all about managing traffic flow in the goal of preventing or lessening back-ups. Too many cars entering the freeway at once = slow down and congestion around on-ramps.
Anonymous
03/30/2020 19:11
Subject: When did they add traffic signals to 270 entrance lanes?
Upper 270 Gaith/Germ
Anonymous
03/30/2020 19:01
Subject: When did they add traffic signals to 270 entrance lanes?
glad to see it started. was in the plans a few years. ramp metering makes the highway flow smoother
Anonymous
03/30/2020 18:55
Subject: When did they add traffic signals to 270 entrance lanes?
Where?
Anonymous
03/30/2020 18:49
Subject: When did they add traffic signals to 270 entrance lanes?
You’re gonna be in for a shock when things go back to normal and you’ll see all these new things popping up.
Anonymous
03/30/2020 17:58
Subject: When did they add traffic signals to 270 entrance lanes?
? Where is this? They did this in CA years ago. It helps reduce congestion on the freeway, but it ends up causing congestion on the on ramps leading to the local roads.
Anonymous
03/30/2020 17:56
Subject: When did they add traffic signals to 270 entrance lanes?
What’s the rationale?