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Old August 3rd, 2011, 03:02 AM   #7181
HAWC1506
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Quote:
Originally Posted by nerdly_dood View Post
Having a white line on the left side of a divided highway would increase visibility, but only slightly, and more importantly, the yellow line makes it far easier to distinguish at a glance which side of the road is which without needing additional signage or arrow markings.
I beg to differ. Yellow markings wear out much sooner than white ones and have lower retroflectivity.

Washington State highways in urban areas have carpool lanes, on which an 8-inch line is used to separate it from other lanes. So 8-inch white on the right, and 4-inch yellow on the left. The yellow is practically non-existent after a few months of use, especially in adverse weather conditions and during night-time. In my experience, it almost seems like the 8-inch white line of the HOV lane becomes the new edge line.

The second point about yellow being used to distinguish direction of traffic is a non-issue when it comes to highways. On-ramps have do-not-enter signs, and will continue to be marked with yellow on the left. Not to mention, all raised reflective markings (cat's eyes) shine red when you go the opposite way.

By the time you enter a highway the wrong-way, you've already missed a lot of signage, and you're unlikely to notice that the yellow paint is on your right side.
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Old August 3rd, 2011, 06:55 PM   #7182
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Zaphod,
The behaviour you describe could result in two small fines - one small for small speeding and another small for not sticking to the right lane.

In Poland it was often that drivers stuck to the left lane - but if the lane discipline is respected, the traffic flow is much moore smoother - ie you are able to drive within the maximum permitted speed for a larger part of drive than you used to be able, seen it on the Polish A4 motorway (not congested) myself.
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Old August 4th, 2011, 05:34 AM   #7183
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The Dan Ryan Expressway in Chicago (I-90/I-94):

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Dan Ryan Expressway & Skyline from 35th Street by zol87
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Old August 4th, 2011, 06:44 AM   #7184
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Cool!

95 coming into Center City Philly

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Philly Skyline (but NOT my RAV4) by PHLAIRLINE.COM, on Flickr
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Old August 4th, 2011, 06:54 AM   #7185
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The view of the skyline from the Dan Ryan is an amazing way to make a grand entrance into the city.
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Old August 4th, 2011, 06:54 AM   #7186
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I-90/I-94 West was pretty backed up today around 1:00 PM.





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Old August 4th, 2011, 04:05 PM   #7187
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Quote:
Originally Posted by desertpunk View Post

Cool!

95 coming into Center City Philly

image hosted on flickr

Philly Skyline (but NOT my RAV4) by PHLAIRLINE.COM, on Flickr
Ah, home.

Quote:
Originally Posted by Trilesy View Post
I-90/I-94 West was pretty backed up today around 1:00 PM.


That "accident investigation site left 1 mile" intrigues me. Does that mean if you have an accident (but are still able to move) you're supposed to keep going until that point and there's a little parking area there?
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Old August 4th, 2011, 04:46 PM   #7188
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Yep.

See:
http://maps.google.com/?ll=41.872597...21973&t=k&z=16

The area referred to by that sign is the paved area in the median.

There are other such areas scattered around Chicagoland.

Here in Wisconsin, WisDOT is installing investigation areas on various interchange off-ramps, especially in more urbanized areas.

Oh yea, the view of the Chicago skyline from that section of the Dan Ryan - at night - is one of my very favorite views from the entire interstate system.



In the opposite direction, the inbound Kennedy Expressway (I-90/94) near the Ohio/Ontario feeder interchange is pretty good, too, as the highway looks like it is heading directly into the side of a mountain of tall buildings.

Mike
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Old August 4th, 2011, 04:52 PM   #7189
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In some places in the Northeast you now get "Fender bender? Move cars to side of road" or words to that effect.
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Old August 4th, 2011, 07:29 PM   #7190
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The accident investigation sites are used also for vehicles that can't be moved but are towed to those sites if/when a wrecker needs to show up.
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Old August 4th, 2011, 10:17 PM   #7191
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Here if theres a reason to call the police, you're not meant to move the cars
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Old August 4th, 2011, 10:24 PM   #7192
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Quote:
Originally Posted by DanielFigFoz View Post
Here if theres a reason to call the police, you're not meant to move the cars
Here, especially in congested places, if there are no injuries the priority is to get the highway cleared and reopened as quickly as possible. If you can, move the cars to a place where they will be out of the way and the cops will investigate everything there.

Mike
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Old August 4th, 2011, 10:54 PM   #7193
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In Holland on matrix signs they urge drivers to find a lay-by when a small accident resulted in collateral damage only.
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Old August 5th, 2011, 12:02 AM   #7194
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And a reminder of what could have been:

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Last edited by desertpunk; August 5th, 2011 at 12:18 AM.
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Old August 5th, 2011, 04:54 AM   #7195
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Construction of a new Inner Belt bridge on I-90 in Cleveland.

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Pier 9 Stems by innerbelt
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Old August 6th, 2011, 08:34 AM   #7196
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Can someone provide an in-depth explanation on how we can improve highway capacity by implementing lane discipline?
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Old August 6th, 2011, 05:13 PM   #7197
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Quote:
Originally Posted by HAWC1506 View Post
Can someone provide an in-depth explanation on how we can improve highway capacity by implementing lane discipline?
By making the left lane a strictly "passing only" land and making the right lane for slower vehicles it improves highway capacity by establishing a sense of order and making the highways safer as a result.

Can Lane Discipline Decrease the Sensitivity of Freeway Fatality Rates to Increases in Speed Limits?
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Old August 6th, 2011, 05:23 PM   #7198
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Well, it's a fact the U.S. freeway fatality rate is far higher than in most of Europe, despite the speed limits being significantly lower. In 2003, 5.2 people were killed per 1 billion motorway (freeway) vehicle kilometers. For instance, this was 3.8 in Germany, 4.0 in France, 2.1 in the Netherlands and 2.0 in the United Kingdom.

See:
http://en.wikipedia.org/wiki/Road_safety#KSI_by_country
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Old August 6th, 2011, 05:32 PM   #7199
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Lane discipline just came up on Car Talk; a grad student who doesn't like driving, isn't comfortable above 65 mph, but has to commute 70 miles on I-65 in Indiana this summer. So she sets the cruise control to 65 and stays in the right lane "with all the trucks." The hosts, after establishing that there are two lanes each direction, said, well everyone's supposed to be in that lane unless they're passing.... So the concept is not unknown here. :-)

(Her specific question was that someone had told her she could improve fuel efficiency by "drafting" - as they use the term in bike racing - behind a truck. The hosts thought you'd need to be so close to the truck it wouldn't be safe.)

Talking of lots of trucks, there are times I wish we had a Sunday truck ban like Germany.
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Old August 6th, 2011, 05:33 PM   #7200
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Quote:
Originally Posted by ChrisZwolle View Post
Well, it's a fact the U.S. freeway fatality rate is far higher than in most of Europe, despite the speed limits being significantly lower. In 2003, 5.2 people were killed per 1 billion motorway (freeway) vehicle kilometers. For instance, this was 3.8 in Germany, 4.0 in France, 2.1 in the Netherlands and 2.0 in the United Kingdom.

See:
http://en.wikipedia.org/wiki/Road_safety#KSI_by_country
Yes, but you only hear about spectacular 50- and 60- vehicle pileups in Europe. 'Cause they're all tailgating while they drive too fast. (I'm being facetious.)
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