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Old December 22nd, 2017, 12:42 PM   #15121
The Polman
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indeed the support for relocation is very low. The open polders are a part of the Groene Hart region which should be kept free from any new construction (although the landscape is slowly being destroyed by hideous industrial areas). Widening on the existing alignment isn't easy but the best option.
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Old December 22nd, 2017, 03:45 PM   #15122
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Quote:
Originally Posted by ChrisZwolle View Post
The Netherlands uses thermoplast road markings on most roads. They are very durable and last for 7 - 10 years, so about the same time as a maintenance cycle for important roads. Thermoplast also acts like a rumble strip.

I took this close-up photo on N307 at Dronten earlier this month. It has two thick thermoplast lines, green paint in the middle and reflective cat's eyes. This is the standard for single carriageway 100 km/h roads. Most roads don't have the green paint.
Thanks for your answer.
Are there any downsides on the use of thermoplasts? Why aren't they standard all over Europe (at least)?
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Old December 22nd, 2017, 03:47 PM   #15123
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Thanks for your answer.
Are there any downsides on the use of thermoplasts? Why aren't they standard all over Europe (at least)?
Some:
(1) cost
(2) they are slippery for motorbikes with narrow tires immediately after rain starts
(3) it is costly to remove it in case of signaling change
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Old December 22nd, 2017, 04:59 PM   #15124
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N233 Rhenen

The Rhine River Crossing at Rhenen is a two-lane bridge built 1957. It was originally a rail bridge, the bridge piers date back to 1883. Present-day traffic volumes overwhelm the bridge's capacity, with 32,000 vehicles per day.

A capacity expansion has long been planned. Initially the idea was to utilize the existing bridge deck for a 3 lane configuration, with one reversible lane and a new cheap span for cyclists. The cost for this project was estimated at € 25 million.

However, they found that a three lane configuration was not feasible. On 18 December, all parties involved recommended a four lane alternative with a bridge deck replacement. That would cost € 66 million. Only € 31 million of funding has been identified so far.

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Old December 22nd, 2017, 05:52 PM   #15125
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Quote:
Originally Posted by Suburbanist View Post
Some:
(1) cost
(2) they are slippery for motorbikes with narrow tires immediately after rain starts
(3) it is costly to remove it in case of signaling change
(4) Maybe also an environmental impact. A lot of the plastic may end up in the oceans as small particles, although tire wear is probably more important.

Thermoplastics is standard in many other countries as well, eg in Norway. The lifetime in the Nordic countries are of course far shorter than in Netherlands due to increased wear from snow - plows, studded tires, snow - chains and probably frost itself. Cat-eyes are for the same reasons not used at all.
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Old December 22nd, 2017, 09:22 PM   #15126
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Quote:
Originally Posted by ChrisZwolle View Post
The Rhine River Crossing at Rhenen is a two-lane bridge built 1957. It was originally a rail bridge, the bridge piers date back to 1883. Present-day traffic volumes overwhelm the bridge's capacity, with 32,000 vehicles per day.

A capacity expansion has long been planned. Initially the idea was to utilize the existing bridge deck for a 3 lane configuration, with one reversible lane and a new cheap span for cyclists. The cost for this project was estimated at € 25 million.

However, they found that a three lane configuration was not feasible. On 18 December, all parties involved recommended a four lane alternative with a bridge deck replacement. That would cost € 66 million. Only € 31 million of funding has been identified so far.

If you de-facto build a new bridge. Why not do it well and extend the A30 To Rhenen, Tiel and Oss. Creating a much needed extra motorway connection across the Rijn/Maas/Waal.
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Old December 27th, 2017, 11:42 AM   #15127
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Traffic congestion

Preliminary figures show an increase of traffic congestion of 0.6% in 2017. This is a significant decline from +12% in 2016, despite continued traffic growth of circa 2 billion vehicle kilometers on the motorway network.

The worst congestion spot is A20 eastbound at the Terbregseplein interchange (A16).

The second worst spot is A4 northbound near Leiden, which was expanded to six lanes, but is the worst-planned project ever in the Netherlands, because they built a stupid local/express system with 1+2+2+1 lanes. Congestion appeared immediately after the project was completed, there was significantly less congestion during construction when they had a temporary 3+3 setup. In addition, traffic congestion also grew substantially on nearby A44. There are plans to expand A4 again.

The third spot is A20 eastbound at Moordrecht, though congestion has decreased with the new road infrastructure opening to traffic. Still, it means that #1 and #3 are on the same motorway, in the same direction, only a few kilometers apart.

The fourth spot is A1 eastbound at Eembrugge. Traffic congestion also decreased at this location because they started construction (take note, Germany) and made 3 lanes available already from the start of construction. This spot will likely disappear from the top 50 next year once the project is completed.

The fifth spot is on A27 southbound at Noordeloos, where traffic congestion dramatically increased by 37% in a single year. An expansion is planned here.

The biggest decline in traffic congestion is A1 eastbound at Diemen, where the expansion project was completed and traffic congestion decreased by 95%.
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Old December 27th, 2017, 05:27 PM   #15128
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A4 Delft - Schiedam

The missing link of A4 between Delft and Schiedam opened to traffic two years ago. Having a capacity of 2x2 lanes and a projected traffic volume of 117,000 - 128,000 vehicles per day by 2020-2025, it was clear from the beginning that it was underdimensioned.

Some design optimalization was worked out during the later stages of procedures, especially for northbound traffic where the projected I/C value dropped >1.0 to 0.7 (i.e., from severe congestion to limited congestion) at the Kethel Tunnel entrance.

A problematic spot however is A4 southbound at the Kethel Tunnel. The tunnel has a metering system that avoids congestion in the tunnel, but moves it upstream. As a result, A4 southbound entered #10 congestion spot in the Netherlands this year.

There are two bottlenecks here. First, the capacity of A4 itself. It should've been built with six or even eight lanes, but that was politically not feasible, resulting in a substandard design. Second, the A4/A20 merge before the Benelux Tunnel is a bottleneck, which activates the tunnel metering system.

The Benelux Tunnel bottleneck will be addressed with the construction of the Blankenburg Tunnel (A24), however it will take another 5 years before that is completed. So things won't improve a lot until then. But at least there are now two motorways between The Hague and Rotterdam, so there is a choice. Congestion decreased dramatically on A13 since A4 opened.
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Old December 28th, 2017, 02:20 AM   #15129
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[NL] The Netherlands | road infrastructure • autosnelwegen

I have often driven on the A4 between Rotterdam and The Hague in both directions, despite the 2x2 layout (especially southbound) the traffic flow was always decent even with heavy traffic, never was slowed down by any jam whatsoever. Even if the day comes that it could need an upgrade, they've still left some space to make an extra lane in both directions.
Oh, and let's not forget that Delft has a little Ringroad of his own

Last edited by EdiPires; December 28th, 2017 at 02:30 AM.
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Old December 28th, 2017, 02:54 PM   #15130
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When did you drive over it? In rush hour there are quite some traffic jams at the Den Haag-Zuid exit where the road narrows from 3 to 2 lanes.
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Old December 29th, 2017, 01:08 AM   #15131
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[NL] The Netherlands | road infrastructure • autosnelwegen

Quote:
Originally Posted by verfmeer View Post
When did you drive over it? In rush hour there are quite some traffic jams at the Den Haag-Zuid exit where the road narrows from 3 to 2 lanes.


The last time I’ve driven there was last November, Northbound from R'dam to Delft, and Southbound from Den Haag to R'dam in my return drive to Luxembourg, but at that time it was in the evening (around 18-19h).
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Old December 29th, 2017, 08:46 AM   #15132
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Quote:
A problematic spot however is A4 southbound at the Kethel Tunnel. The tunnel has a metering system that avoids congestion in the tunnel, but moves it upstream. As a result, A4 southbound entered #10 congestion spot in the Netherlands this year.
Yes, I,ve seen this a couple of times the last months with the southbound tunnel entrance closed and the traffic banked up to Delft.
First time I saw it, I thought there was some kind of malfunction.
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Old December 31st, 2017, 04:40 PM   #15133
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N444 Voorhout

N444 is a short provincial road in South Holland. It links A44 to N206 north of Leiden, so it carries more traffic than just local traffic, traffic volumes range from 16,000 - 18,000.

A set of traffic lights over a canal in Voorhout has been replaced by a turbo roundabout this year.




Last edited by ChrisZwolle; December 31st, 2017 at 09:34 PM.
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Old December 31st, 2017, 09:47 PM   #15134
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2017: year in review

2017 wraps up tonight. Let's see what has been achieved with Dutch motorways in 2017.

* 19 January: a large contract was awarded to reconstruct A10 along the south side of Amsterdam. It will be expanded to 12 lanes.
* 30 January: a large contract was awarded to construct an expressway south of Leiden, planned since the 1950s.
* 16 February: the second stage of the A6 expansion through Almere starts. The motorway will be widened to 8 lanes
* 8 March: the final approval for the A15 extension near Arnhem was signed. The motorway will be extended across the Rhine River to A12.
* 7 April: the old A9 through Badhoevedorp is decommissioned after 50 years of service.
* 10 April: the new A9 around Badhoevedorp opens in its entirety, with 2x3 lanes.
* 16 May: opening of 8 lanes of A50 across the Waal River near Nijmegen.
* 29 May: reconstruction of the A1/A6 interchange at Muiderberg is completed. Traffic congestion is reduced by 95%


* 1 July: the SOS telephone network along the motorway network is decommissioned.
* 1 July: the A1/A27 expansion Utrecht - Hilversum - Amersfoort officially begins.
* 20 July: a € 1 billion contract for the construction of A24 west of Rotterdam has been awarded
* 4 October: the reversible lane of A1/6 between Almere and Amsterdam opens to traffic, expanding capacity to 12 lanes.
* 12 October: the new Joure interchange (A6/A7) opens to traffic
* 25 October: Melanie Schultz ends her 7 year term as minister of transport. She was the longest-serving minister since World War II.
* 7 November: opening of the new N31 through Harlingen.
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Old January 1st, 2018, 06:14 PM   #15135
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traffic jams in 2017

The final data over 2017 shows that congestion did not increase overall, compared to a 12% growth in 2016.

Here's an overview of the worst bottlenecks, using the 'kilometer minutes' metric, by the VID.

You can see that the top 3 bottlenecks really stand out, #1 and #2 have twice as much congestion as #10. The two A20 bottlenecks are only some 10 kilometers downstream from each other.

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Old January 2nd, 2018, 09:19 PM   #15136
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An old plan to rebuild Amsterdam outside the "canal ring"

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Old January 2nd, 2018, 09:45 PM   #15137
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Back in the 1950s, people moved to outer neighborhoods and suburbs, with a rapidly increasing car ownership. However, for some time, most functions for business, shopping, leisure and employment remained in the city center. So plans were drawn up to build extensive city center infrastructure. Canals became roads and squares became parking lots.

Later on, society decentralized. Parking garages were constructed, car-free roads or districts were implemented and ring roads were built. This drastically reduced the need to have extensive road infrastructure in the city core, compared to North America and the odd European city.

You can still see this in Amsterdam. A10 encircles the urban core, it's a fairly small ring road (30 km). Traffic volumes fluctuate between 120,000 and 200,000 vehicles per day. But not much of that traffic actually goes into the city center, where there are mostly only two-lane roads and narrow streets. It disperses across other motorways or the urban road network within 1-2 km of A10.
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Old January 3rd, 2018, 11:20 AM   #15138
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A truck has caused significant damage to the Zeeburg Tunnel entrance of A10 on the east side of Amsterdam.






Last edited by ChrisZwolle; January 3rd, 2018 at 12:37 PM. Reason: added photo
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Old January 3rd, 2018, 01:02 PM   #15139
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One of those toy trucks blocks 5 lanes on A2:

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Old January 3rd, 2018, 03:40 PM   #15140
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A truck has caused significant damage to the Zeeburg Tunnel entrance of A10 on the east side of Amsterdam.
It fell on it?
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