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Old April 18th, 2014, 01:35 PM   #10681
ChrisZwolle
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A27 Utrecht - Breda

The minister of transportation has approved the preferred alternative for the A27 widening project between Houten and Hooipolder interchange. This is a 47 kilometer stretch of motorway.

To be clear, there is by far not enough funding for a integral widening. A full widening would cost € 1.6 billion, the budget is only € 808 million. Some significant budget cuts have been made to select an option that would add as much capacity as possible within the budget.

The preferred alternative is a mix of new lanes and shoulder running. Much of the additional capacity will be in the form of shoulder running.

Northbound
* 2 lanes + shoulder running from Hooipolder (A59) to Werkendam
* 3 lanes from Werkendam to Scheiwijk
* 2 lanes + shoulder running from Scheiwijk to Houten

Southbound
* 4 lanes from Houten to Everdingen (A2)
* 2 lanes + shoulder running from Everdingen to Scheiwijk
* 4 lanes from Scheiwijk to Werkendam, including a new Merwede Bridge
* 2 lanes + shoulder running from Werkendam to Hooipolder

None of the possible alternatives will completely solve traffic congestion on this stretch of motorway, however this variant will allow the largest increase in vehicle kilometers while cutting the most delays. Other variants allow a smaller increase in kilometers driven, which causes more delays due to bottlenecks. In this case, more traffic = less congestion.
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Old April 18th, 2014, 02:05 PM   #10682
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no reconstruction of Hooipolder interchange?
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Old April 18th, 2014, 03:50 PM   #10683
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Merwede Bridge

The current Merwede Bridge opened to traffic in 1961, and is notorious for its narrow lanes and very dense traffic. It had originally just a curb to divide directions, a crash barrier was installed later in the 1960s.

It is so narrow that even 4 lanes without shoulders in one direction do not fit by contemporary design standards, so the bridge will be converted to 3 lanes and a small shoulder in one (northbound) direction. A new four-lane bridge will be constructed next to it for southbound traffic.

Traffic volumes are very high for such a substandard bridge. The 2012 AADT was 98,400 vehicles per day, however it carries up to 105,000 vehicles in some months.

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Old April 18th, 2014, 03:52 PM   #10684
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Quote:
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no reconstruction of Hooipolder interchange?
A59 eastbound to A27 northbound will get a direct non-traffic light route (I don't know exactly how). The rest will remain the same.

Well, it's something...
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Old April 18th, 2014, 03:54 PM   #10685
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A59 eastbound to A27 northbound will get a direct non-traffic light route (I don't know exactly how). The rest will remain the same.

Well, it's something...


Unacceptable. There are a lot of traffic jams caused by the presence of those traffic lights.
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Old April 18th, 2014, 05:08 PM   #10686
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Shoulder running, does that mean opening the shoulder for traffic in rush hours (like on the A1 between Amersfoort and Barneveld for example) or the terrible implementation like on the A12 between Ede and Utrecht? I know there is some room for an extra lane on the A27 southbound south of the existing short three lane stretch.

I think the extra lane will be open pretty much between 6am and 7pm anyway (maybe with a short break between 11am and 2pm), the A27 is really busy even during daytime due to the amount of freight traffic.
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Old April 18th, 2014, 05:34 PM   #10687
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Given the urge to cut costs from € 1.6 billion to € 800 million, I'm pretty certain it is shoulder running on the right. Otherwise they'd make permanent lanes. Left shoulder running is more expensive than a regular lane in the longer term, so they don't want to do that anymore except when there are exceptional space-constraints.

I agree that shoulder running will likely be in operation for much of the day, given the high traffic volumes of 80,000+ vehicles per day.
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Old April 18th, 2014, 08:01 PM   #10688
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Sheep on the road .

In Friesland today.
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Old April 18th, 2014, 10:47 PM   #10689
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N359 Lemmer - Leeuwarden

The N359 is a provincial road in Friesland province. It is a 63 kilometer long road that runs from Lemmer via Bolsward to Leeuwarden. It's a very nice road to drive on, with a mostly 100 km/h speed limit, low traffic volumes and only one built-up area (starting point Lemmer). It has one aquaduct, and another one is planned in Lemmer.

I recorded the entire N359 in two videos:


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Old April 18th, 2014, 10:58 PM   #10690
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That ought to be one of the few remaining 100km/h "green median" 1+1 roads where you are still allowed to overtake.
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Old April 19th, 2014, 12:25 AM   #10691
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Quote:
Originally Posted by Surel View Post
Sheep on the road .

In Friesland today.

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Old April 19th, 2014, 05:17 AM   #10692
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Quote:
Originally Posted by Suburbanist View Post
That ought to be one of the few remaining 100km/h "green median" 1+1 roads where you are still allowed to overtake.
judging by that video its essentially empty.. very little traffic on it.
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Old April 19th, 2014, 10:53 AM   #10693
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Glow in the dark road markings on N329 in the city of Oss.

So, all the media in the whole world reported about the glow in the dark road markings.

But they don't work at all. The only thing that works are green cat's eyes. The glow in the dark road markings are totally invisible. What a joke.

Video:
https://www.facebook.com/photo.php?v...type=2&theater
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Old April 19th, 2014, 01:16 PM   #10694
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That's a let down... Back to the drawing board!
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Old April 19th, 2014, 05:48 PM   #10695
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N35 Salland - Twente Tunnel, Nijverdal

I visited the N35 Salland-Twente Tunnel project in Nijverdal today.


N35 Combitunnel Nijverdal 19-04-2014-2 by Chriszwolle, on Flickr


N35 Combitunnel Nijverdal 19-04-2014-9 by Chriszwolle, on Flickr


N35 Combitunnel Nijverdal 19-04-2014-13 by Chriszwolle, on Flickr


N35 Combitunnel Nijverdal 19-04-2014-16 by Chriszwolle, on Flickr


N35 Combitunnel Nijverdal 19-04-2014-18 by Chriszwolle, on Flickr
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Old April 19th, 2014, 09:48 PM   #10696
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What the hell ? Idiots ? Surely they tested this on some private road/terrain before putting it on the public road ?

EDIT: Regarding the ''glow in the dark'' markings.
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Old April 20th, 2014, 06:37 PM   #10697
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Quote:
Originally Posted by snowdog View Post
What the hell ? Idiots ? Surely they tested this on some private road/terrain before putting it on the public road ?

EDIT: Regarding the ''glow in the dark'' markings.
They probably did. Then again, glow in the dark products don't last that long before needing to be exposed to light for a time. just another case of "It looked good on paper but..."
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Old April 20th, 2014, 06:43 PM   #10698
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That's what I meant, surely they could conclude the same on a testing area ? Eg. come by around 6 am when it's been dark for 8+ hrs.
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Old April 20th, 2014, 10:54 PM   #10699
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Quote:
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That's what I meant, surely they could conclude the same on a testing area ? Eg. come by around 6 am when it's been dark for 8+ hrs.
They could, but they would have not got any money for that, right? .
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Old April 20th, 2014, 11:26 PM   #10700
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Quote:
Originally Posted by ChrisZwolle View Post
So, all the media in the whole world reported about the glow in the dark road markings.

But they don't work at all. The only thing that works are green cat's eyes. The glow in the dark road markings are totally invisible. What a joke.

Video:
https://www.facebook.com/photo.php?v...type=2&theater
i have just read an article about it. they are even mentioning that public lights will not be neccessary at all after that revolution

btw, how about this thing? it seems that led lights are moving in front of vehicle on set speed (in this case 70 km/h). nice thing but could attract to much attention off the road.
https://www.youtube.com/watch?v=aE3rC8xRL3s
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