- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
Navigating a Diverging Diamond Interchange
Posted on 3/11/16 at 1:11 pm
Posted on 3/11/16 at 1:11 pm
Went out to lunch today and encountered a diverging diamond interchange where I26 intersects Airport Road here in Asheville. What is the purpose of this configuration?
It makes you drive on the left across the overpass!
It makes you drive on the left across the overpass!
25
Posted on 3/11/16 at 1:12 pm to blueridgeTiger
Never heard of this. Weird
Posted on 3/11/16 at 1:14 pm to blueridgeTiger
Makes you slow down.
Posted on 3/11/16 at 1:14 pm to blueridgeTiger
looks like it accomplishes a whole lot of nothing 
Posted on 3/11/16 at 1:15 pm to blueridgeTiger
Wikipedia
Basically better safety with potential for improved efficiency. Also seems to require less ramps/etc. to be built.
quote:
Like the continuous flow intersection, the diverging diamond interchange allows for two-phase operation at all signalized intersections within the interchange. This is a significant improvement in safety, since no long turns (e.g. left turns where traffic drives on the right side of the road) must clear opposing traffic and all movements are discrete, with most controlled by traffic signals.[3]
Additionally, the design can improve the efficiency of an interchange, as the lost time for various phases in the cycle can be redistributed as green time—there are only two clearance intervals (the time for traffic signals to change from green to yellow to red) instead of the six or more found in other interchange designs.
Basically better safety with potential for improved efficiency. Also seems to require less ramps/etc. to be built.
This post was edited on 3/11/16 at 1:17 pm
Posted on 3/11/16 at 1:15 pm to blueridgeTiger
I don't know but I had a hell of a time with the interchanges when I was in Asheville about a month ago. This is probably why.
Posted on 3/11/16 at 1:15 pm to blueridgeTiger
It cuts out the need for a left handed turn arrow. You are always on the side of the exit. Thus it improves the flow of traffic because you cut out the wait time on the green arrow.
Posted on 3/11/16 at 1:15 pm to Carson123987
Seems really pointless and bloated. A perfect example of a government project
Posted on 3/11/16 at 1:16 pm to blueridgeTiger
The advantage is people getting on or off the interstate don't have to cross lanes of traffic or stop at a stoplight
Posted on 3/11/16 at 1:16 pm to blueridgeTiger
It's to avoid creating the costly clover leaf you see on typical exits.
Posted on 3/11/16 at 1:17 pm to blueridgeTiger
Two vs. Four light cycles and keeps more cars moving.
Posted on 3/11/16 at 1:17 pm to blueridgeTiger
There's been talk of doing that to College Drive here in BR. It's basically a way to move more traffic without having to add lanes. If you look at how it's configured, it basically allows for protected left hand turns onto and off of the highways without a need for red lights.
Posted on 3/11/16 at 1:17 pm to blueridgeTiger
The British are slowly retaking our country
driving on the left side of the road is just the latest ploy
Kate Middleton was the last one before this
driving on the left side of the road is just the latest ploy
Kate Middleton was the last one before this
Posted on 3/11/16 at 1:18 pm to Gradual_Stroke
quote:
Seems really pointless and bloated. A perfect example of a government project
They're great for high traffic intersections/exists.
Posted on 3/11/16 at 1:19 pm to Golfer
Oh. Well the point stands
Posted on 3/11/16 at 1:20 pm to blueridgeTiger
Poor girl walking her dog has to cross 4 traffic 4 times, plus walk down the middle of the bridge.
Posted on 3/11/16 at 1:23 pm to Gradual_Stroke
quote:no it doesn't. it's the opposite of "bloated". it's less lights, less wait, and less clutter.
Well the point stands
Posted on 3/11/16 at 1:24 pm to link
I'll just go frick myself then
Posted on 3/11/16 at 1:30 pm to blueridgeTiger
210 and Nelson in LC was supposed to be changed to this. I don't know what the hold up is or if it was cancelled. The new Cove Ln and 210 interchange is a tight diamond interchange with a roundabout. It works pretty well apart from drivers coming off the interstate and blowing through the stop sign at the end of the ramp.
Youtube vid of accident at said intersection.
Youtube vid of accident at said intersection.
Posted on 3/11/16 at 1:35 pm to Trout Bandit
quote:
There's been talk of doing that to College Drive here in BR. It's basically a way to move more traffic without having to add lanes. If you look at how it's configured, it basically allows for protected left hand turns onto and off of the highways without a need for red lights.
It's been in operation for several years at the Airline/Siegen/Sherwood Forest intersection and has really made a difference. I understand that these are commonplace in Mexico and other countries.
Page 1 of 2
Back to top
Follow TigerDroppings for LSU Football News