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Old September 2nd, 2012, 01:23 AM   #8281
HAWC1506
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Another one from Washington, USA.

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Old September 2nd, 2012, 05:09 PM   #8282
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Nobody had lane discipline in that video. Look at all the wasted road space in front of me on the right-hand half of the carriageway!
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Old September 2nd, 2012, 05:48 PM   #8283
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Interesting traffic management, it looks Dutch, I'd love to see it in action once. They're also not too far apart. The most common mistake with this kind of traffic management is that they place the gantries too far apart, leaving gaps that are too long, which sort of makes the system useless because traffic changes faster than you reach the next gantry.
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Old September 2nd, 2012, 06:11 PM   #8284
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Quote:
Originally Posted by ChrisZwolle View Post
Interesting traffic management, it looks Dutch, I'd love to see it in action once. They're also not too far apart. The most common mistake with this kind of traffic management is that they place the gantries too far apart, leaving gaps that are too long, which sort of makes the system useless because traffic changes faster than you reach the next gantry.
It does look a bit Dutch, but with terrible pavement, faded markings, dirty misaligned barriers and abysmal drivers

The signs are made by Telegra in Croatia. The spacing is every 800 m. Ideal would be 500 m. The gantry spacing isn't too bad on I-5, but for I-90 and SR 520 there are gaps greater than a mile.

Operations wise, speed limits are hard to enforce (they aren't enforced actually, but are still restrictive). Compliance for lane control signs are not too bad, but occasionally you'll have an impatient driver speed down a closed lane.
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Old September 2nd, 2012, 06:12 PM   #8285
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Another one, I-405 (Southbound) from Bellevue to Tukwila.

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Old September 3rd, 2012, 05:14 AM   #8286
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Interstate 95 North: Boxford MA to Salisbury MA


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Old September 3rd, 2012, 08:23 AM   #8287
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Interstate 95 South to Interstate 93 South: Lynnfield, MA to Medford, MA


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Old September 3rd, 2012, 01:29 PM   #8288
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Quote:
Originally Posted by ChrisZwolle View Post
Interesting traffic management, it looks Dutch, I'd love to see it in action once. They're also not too far apart. The most common mistake with this kind of traffic management is that they place the gantries too far apart, leaving gaps that are too long, which sort of makes the system useless because traffic changes faster than you reach the next gantry.
What do these gantries do?
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Old September 3rd, 2012, 02:01 PM   #8289
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He means matrix digital traffic information and/or lane guidance.
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Old September 3rd, 2012, 04:53 PM   #8290
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I-70 / I-435 interchange, Kansas City

The I-70 / I-435 interchange in eastern Kansas City was modified recently. A new C/D lane was constructed in the eastbound direction.

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Old September 3rd, 2012, 07:08 PM   #8291
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Quote:
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Why isnt there a unified asphalt colour?
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Old September 3rd, 2012, 07:15 PM   #8292
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Quote:
Originally Posted by siamu maharaj View Post
What do these gantries do?
Quote:
Originally Posted by Road_UK View Post
He means matrix digital traffic information and/or lane guidance.
Yep, see this: http://en.wikipedia.org/wiki/Active_traffic_management
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Old September 3rd, 2012, 08:13 PM   #8293
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Quote:
Originally Posted by NFZANMNIM View Post
Why isnt there a unified asphalt colour?
I think this is a mixture of old/new asphalt as well as concrete. The C/D lanes Eastbound 435 to 70 are still as useless as the old ones. Traffic is still at a standstill in the interchange at rush hours(s) MoDot FAIL
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Old September 5th, 2012, 02:13 PM   #8294
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Here's another one of I-90 Eastbound, this time on the main carriageway (not the reversible express lanes). This one also travels a longer distance. I recorded this at 14:30 just before the afternoon peak begins. Enjoy.

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Old September 6th, 2012, 04:54 AM   #8295
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Old September 6th, 2012, 12:23 PM   #8296
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Plans to possibly convert the downtown portions of I-10/I-45/US 59 in Houston into a giant roundabout.

Quote:
Houston Chronicle: Here's a roundabout way to ease traffic congestion
It's one of many alternatives officials are considering
Monday, September 3, 2012 | Updated: Tuesday, September 4, 2012 1:04am

Imagine driving into downtown Houston on interstates 10 or 45, or U.S. 59, and having to merge with all other incoming traffic onto an elevated, one-way traffic circle around the cluster of skyscrapers.

If downtown isn't your final destination, you would stay on the circle until you got to the point where your freeway picks back up. Otherwise, you would pick an off-ramp to exit.

For now, the concept - a first-of-its-kind roundabout fed by multiple major highways rather than surface streets - is one of many untested and undeveloped ideas that local transportation entities will entertain as they begin taking a more creative look at how to relieve congestion in the highly developed area inside Loop 610 in an era of declining state funding.

The Texas Department of Transportation stresses the preliminary nature of the idea, saying that studies may prove it's not even feasible. But it is one of the "innovative" solutions the agency is floating as transportation leaders realize using the state's limited funds to build more and more roads isn't the best or only way to solve congestion in Texas' major cities.

"That is currently on the table with a universe of options," Raquelle Lewis, transportation department spokeswoman in Houston, said of the Texas-sized roundabout.

Ted Houghton, chairman of the Texas Transportation Commission, which governs TxDOT, turned heads when he described the concept as both "fascinating" and "feasible" during a breakfast address in Houston in early August.

...
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Old September 6th, 2012, 12:27 PM   #8297
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Sounds interesting. There are a few real-life examples, for example the Osaka & Nagoya Ring Roads, as well as the Charleroi Ring Road in Belgium.
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Old September 6th, 2012, 12:38 PM   #8298
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I think I-10 through traffic should be excluded from the circular movement though.
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Old September 6th, 2012, 12:45 PM   #8299
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I-29 Kansas City

Some aerials from the new Bond Bridge in Kansas City. It's a 7-lane cable-stayed bridge. It carries I-29 and US 71.

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Old September 6th, 2012, 06:58 PM   #8300
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I-495 Express Lanes

The I-495 Express Lanes are nearly completed along the southwest side of the Greater Washington area. The construction in the median is Metro Rail.

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