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[NL] The Netherlands | road infrastructure • autosnelwegen

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#1 · (Edited by Moderator)
First post by; ChrisZwolle

The Netherlands:


NL road projects 2009 - 2018 final PNG 8-bit by Chriszwolle, on Flickr

Road projects 2010 - 2020

As of mid-2010 in procedures or under construction.


A1 Amsterdam - Amersfoort - Hengelo - German border

A1 IC Watergraafsmeer - IC Diemen - IC Muiderberg


Current status:
Watergraafsmeer - Diemen: 2x3
Diemen - Muiderberg: 2x3 + reversible lane

Short-term solution:
Watergraafsmeer - Diemen: shoulder running
Diemen - Muiderberg: extra reversible lane

Completion: early 2011

Structural solution:
Watergraafsmeer - Diemen: widening to 2x4 + shoulder running (5 lanes during rush hour)
Diemen - Muiderberg: widening to 2x5 + 2 reversible lanes + 2 bus lanes, construction of a new 14-lane aquaduct near Muiden.

Completion: 2011 - 2017

A1 Bussum - IC Eemnes


Current status:
Bussum - interchange Eemnes: 2x2 on a narrow alignment

Short-term solution:
Bussum - interchange Eemnes: shoulder running (3 lanes during rush hour)

completion: early 2011

Structural solution:
None so far. Structural widening means either a tunnel, double-deck or (very) expensive real estate acquiring. (multi-million houses)

IC Eemnes - IC Hoevelaken


Current status:
IC Eemnes - IC Hoevelaken: 2x2 lanes

Structural solution:
Widening to 2x3 or 2x4 lanes, depending on alternative chosen.

Completion: 2012 - 2015

IC Beekbergen - IC Azelo


Current status:
IC Beekbergen - Deventer-Oost: 2x2 + plus lanes (left shoulder running)
Deventer-Oost - IC Azelo: 2x2

Structural solution:
IC Beekbergen - Deventer-Oost: 2x4
Deventer-Oost - IC Azelo: 2x3

Completion: unknown, no funding and/or priority yet




A2 Amsterdam - Utrecht - Eindhoven - Maastricht

A2 IC Holendrecht - IC Oudenrijn


Current status:
IC Holendrecht - IC Oudenrijn: 2x3 (provisional widening from 1976)

Structural solution:
IC Holendrecht - Maarssen: 2x5
Maarssen - IC Oudenrijn: 2+3+3+2 (including a 10-lane tunnel)

completion: 2010 - 2012

IC Oudenrijn - IC Everdingen


Current status:
IC Oudenrijn - Nieuwegein: 4+3
Nieuwegein - IC Everdingen: 2x3

Structural solution:
IC Oudenrijn - IC Everdingen: 2x4

completion: late 2011

IC Everdingen - IC Deil


Current status:
IC Everdingen - Culemborg: 2x3
Culemborg - IC Deil: 2x2

Structural solution:
IC Everdingen - IC Deil: 2x4

Completion: late 2010

IC Deil - IC Empel


Current status:
IC Deil - IC Empel: 2x3

Completion: completed early 2010

IC Empel - IC Vught


Current status:
IC Empel - IC Vught: 4x2

Completion: completed early 2010

IC Vught - IC Ekkersweijer


Current status:
IC Vught - IC Ekkersweijer: 2x2

Structural solution:
IC Vught - IC Ekkersweijer: 2x3

Completion: 2011 - 2013

IC Ekkersweijer - IC Leenderheide


Current status:
IC Ekkersweijer - IC De Hogt: 4x2
IC De Hogt - IC Leenderheide: 2+3+3+2

Completion: completed mid-2010

IC Het Vonderen - IC Kerensheide


Current status:
IC Het Vonderen - IC Kerensheide: 2x2

Short-term solution:
IC Het Vonderen - IC Kerensheide: 2x2 plus shoulder running (3 lanes during rush hour)

Completion: 2011

Structural solution:
IC Het Vonderen - IC Kerensheide: none
Fly-over IC Kerensheide to A76

completion: 2013

A2 Maastricht


Current status:
IC Kruisdonk - IC Europaplein: 2x2 with traffic lights

Structural solution:
IC Kruisdonk - IC Europaplein: 4x2 double-deck tunnel

Completion: 2010 - 2016



A4 Amsterdam - Den Haag - Rotterdam - Belgian border

IC De Nieuwe Meer - IC Badhoevedorp


Current status:
IC De Nieuwe Meer - IC Badhoevedorp: 2x3

Short-term solution:
IC De Nieuwe Meer - IC Badhoevedorp: shoulder running (4 lanes during rush hour)

completion: april 2011

IC Burgerveen - Leiden


Current status:
Zoeterwoude-Rijndijk - Hoogmade: 2x2
Hoogmade - Roelofarendsveen: 2x3
Roelofarendsveen - IC Burgerveen: 2x2

Structural solution:
Zoeterwoude-Rijndijk - Hoogmade: 2x3 (including new aquaduct)

completion: 2014

Roelofarendsveen - IC Burgerveen: 2x3 (including new aquaduct)

completion: late 2010

Delft-Zuid - IC Kethelplein


Current status:
no motorway. Traffic uses saturated 2x3 parallel A13

Structural solution:
Construction 2+3 motorway

Completion: 2011 - 2015

Dinteloord - Halsteren


Current status:
No motorway. Traffic uses N259 or nearby A59/A17

Structural solution:
Constrution 2x2 motorway

completion: 2012 - 2013



A5 Amsterdam - Hoofddorp

A10 - IC Raasdorp


Current status:
No motorway. Traffic uses nearby A10 Ring Road

Structural solution:
Construction elevated 2x2 motorway

Completion: 2009 - 2012



A6 Almere - Emmeloord - Joure

IC Muiderberg - Almere


Current status:
IC Muiderberg - Almere-S101: 2x3

Structural solution:
IC Muiderberg - Almere-S101: 2x4 + 2 reversible lanes

completion: 2011 - 2017

A7 Zaandam - Heerenveen - Groningen - German border

Ring Groningen


Current status:
2x2 N7 expressway with 1 traffic light

Structural solution:
construction 2x4 depressed freeway with full interchange with A28.

Completion: 2015 - 2020



A9 Diemen - Amstelveen - Haarlem - Alkmaar

IC Diemen - IC Holendrecht


Current status:
IC Diemen - IC Holendrecht: 2x2 lanes

Short-term solution:
shoulder running (3 lanes during rush hour)

completion: late 2010

Structural solution:
widening to 2x5 lanes, including tunnel

completion: 2011 - 2017

IC Holendrecht - IC Badhoevedorp


Current status:
IC Holendrecht - IC Badhoevedorp: 2x3

Structural solution:
IC Holendrecht - IC Badhoevedorp: 2x4

completion: 2011 - 2017

IC Badhoevedorp - IC Raasdorp


Current status:
IC Badhoevedorp - IC Raasdorp: 2x2 on narrow alignment

Short-term solution:
shoulder running

completion: early 2011

Structural solution:
Construction 2x3 motorway on a new alignment

completion: 2012 - 2016

IC Rottepolderplein - IC Velsen


Current status:
IC Rottepolderplein - IC Velsen: 2x2 on a narrow alignment

Short-term solution:
shoulder running, 3 lanes during rush hour.

completion: early 2011

Uitgeest - Alkmaar


Current status:
Uitgeest - Alkmaar: 2x2

Short-term solution:
shoulder running (3 lanes during rursh hour)

completion: late 2011



A10 Ring Amsterdam

IC De Nieuwe Meer - IC Amstel


Current status:
IC De Nieuwe Meer - IC Amstel: 2x3

Short-term solution:
shoulder running (4 lanes during rush hour)

completion: early 2011

IC Amstel - IC Watergraafsmeer


current status:
IC Amstel - IC Watergraafsmeer: 2x3

Structural solution:
IC Amstel - IC Watergraafsmeer: 2x4

completion: 2011 - 2017

Second Coen Tunnel


Current status:
2x2 tunnel without shoulders

Structural solution:
construction of a second tunnel
4x2 lanes including 2 reversible lanes (6 lanes during rush hour)

completion: 2009 - 2012



A12 Den Haag - Utrecht - Arnhem - German border

IC Gouwe - IC Oudenrijn


Current status:
IC Gouwe - Gouda: 2x4
Gouda - Woerden: 2x3
Woerden - De Meern: 3+4
De Meern - IC Oudenrijn: 5+6

Short-term solution:
IC Gouwe - Woerden: left shoulder running (4 lanes during rush hour)

completion: mid-2011

Structural solution:
Woerden - De Meern: 2x4

Completion: mid-2011

IC Oudenrijn - Veenendaal


Current status:
IC Oudenrijn - Bunnik: 2x3
Bunnik - Veenendaal: 2x2

Solutions:
IC Oudenrijn - Bunnik: 2x4
Bunnik - Driebergen: 2x3 + shoulder running (4 lanes during rush hour)
Driebergen - Maarsbergen: shoulder running (3 lanes during rush hour)
Maarsbergen - Veenendaal: shoulder running (3 lanes during rush hour)

completion: 2010 - 2014

Ede - IC Grijsoord


Current status:
Ede - IC Grijsoord: 2x2

Structural solution:
Ede - IC Grijsoord: 2x3

Completion: 2012 - 2014

IC Waterberg - IC Velperbroek


Current status:
IC Waterberg - IC Velperbroek: 2x2

Structural solution:
IC Waterberg - IC Velperbroek: 2x3

Completion: 2011 - 2014



A13 Rotterdam - Den Haag

A13-A16 connection


Current status:
No motorway, traffic uses saturated nearby A20

Structural solution:
Construction of a 2x2 motorway

Completion: unknown, in procedures.

A15 Europoort - Rotterdam - Nijmegen

Rozenburg - IC Vaanplein


Current status:
Rozenburg - Spijkenisse: 2x2
Spijkenisse - IC Vaanplein: 2x3

Structural solution:
Rozenburg - Spijkenisse: 2x3 (partially left shoulder running)
Spijkenisse - IC Vaanplein: 2+3+3+2 (including new 2x2 bridge in addition to existing 2x3 tunnel)

Completion: 2010 - 2015

IC Ressen - A12 Zevenaar


Current status:
no motorway. Traffic uses A50 or N325

Structural solution:
construction of a 2x2 motorway

Completion: unknown, possibly toll road



A27 Almere - Utrecht - Breda

A27 IC Lunetten - IC Rijnsweerd


Current status:
IC Lunetten - IC Rijnsweerd: 2x4

Structural solution:
IC Lunetten - IC Rijnsweerd 4+6 (6 lanes northbound)

Completion: late 2011

Utrecht-Noord - IC Eemnes


Current status:
Utrecht-Noord - IC Eemnes: 2x2

Structural solution:
Utrecht-Noord - IC Eemnes: 2x3 or 2x4, depending on alternative chosen

Completion: 2012 - 2015

IC Lunetten - IC Hooipolder


Current status:
IC Lunetten - IC Hooipolder: mostly 2x2, some buffer lanes and shoulder running

Short-term solution:
IC Lunetten - IC Everdingen: 2x2 + shoulder running (3 lanes during rush hour)

Completion: early 2011

Structural solution:
IC Lunetten - IC Hooipolder: 2x3 or 2x3 / 2x4 or 2x3 / 4x2 depending on alternative
Construction of a new Merwede Bridge near Gorinchem (8 lanes)

Completion: 2013 - 2018



A28 Utrecht - Amersfoort - Zwolle - Groningen

IC Rijnsweerd - IC Hoevelaken


Current status:
IC Rijnsweerd - IC Hoevelaken: 2x2

Short-term solution:
Amersfoort-Zuid - IC Hoevelaken: left shoulder running (3 lanes during rush hour)

Structural solution:
IC Rijnsweerd - Amersfoort-Zuid: 2x3

Completion: 2010 - 2012

Amersfoort-Zuid - IC Hoevelaken: 4x2

Completion: unknown, no funding yet, requires ROW expansion

IC Hattemerbroek - IC Lankhorst


Current status:
IC Hattemerbroek - Zwolle-Zuid: 2x3
Zwolle-Zuid - Ommen: 2x2 + left shoulder running (3 lanes during rush hour)
Ommen - IC Lankhorst: 2x2

Structural solution:
IC Hattemerbroek - Zwolle-Zuid: 2x4
Ommen - IC Lankhorst: 2x3

Completion: early 2011



A50 Eindhoven - Arnhem - Zwolle

IC Ewijk - IC Grijsoord


Current status:
IC Ewijk - IC Grijsoord: 2x2

Structural solution:
IC Ewijk - IC Valburg: 2x4 (including second Waal bridge)

Completion: 2010 - 2014

IC Valburg - IC Grijsoord: 2x3

Completion: mid-2011

*****************

Schiphol - Amsterdam - Almere (SAA)

The SAA project is the largest motorway project undertaken in the Netherlands in at least the last few decades. A few years ago, it became clear there was no political will for a new A6-A9 connection, thus plans changed and they opted for a massive widening of existing motorways. In 2010 the design-record of decision has been taken, and a record of decision is expected in 2011 with road works commencing in 2012 and completion in 2018.

This is the scope of the project:


The most vital link is the A1 between interchanges Diemen and Muiderberg. It currently carries 190.000 vehicles per day. It has 2x3 lanes plus a reversible lane, which will be dualled until early 2011, hence 8 lanes. To cope with the astounding growth of the city of Almere (from 180.000 to 350.000 inhabitants), a large-scale expansion of the motorway network to the job locations (southern Amsterdam, Schiphol area) is necessary.

The predicted 2022 traffic volume on the A1 motorway is 311.000 vehicles per day. In other words, around 370.000 people will use it on a daily basis. This is as much as 40% of the entire Dutch public transport. Only the growth of traffic on this corridor equals 15% of the entire Dutch public transport. It will become the busiest motorway in the Netherlands, and possibly Europe (tie with M-30 in Madrid).

Section: A1 interchange Watergraafsmeer (A10) - interchange Diemen (A9)

This section will be widened from 2x3 lanes to 2x4 lanes. There will be 10 lanes close to both interchanges.


Section: A1 interchange Diemen (A9) - interchange Muiderberg (A6)

This section will be widened from 2x3+2 lanes to 2x5+2 lanes plus 2 bus lanes, 14 lanes total. The drawbridge near Muiden will be replaced by a 14-lane aquaduct slightly south of the existing bridge, the widest aquaduct in the world. Some sections will feature 2x6 through lanes.


Section: A6 interchange Muiderberg (A1) - Almere-Buiten-Oost

This section will be widened from 2x3 / 2x2 lanes to an express-local setup, with basically 4x2 lanes near Almere, but up to 16 lanes closer to interchange Muiderberg. The existing Holland Bridge will be replaced by a new, 15-lane bridge, including 11 motorway lanes, 2 bus lanes and 2 non-motorway lanes for slow traffic. This bridge will become the widest in the Netherlands, surpassing the 12-lane Brienenoord Bridge in Rotterdam.


Section: A9 interchange Diemen (A1) - interchange Holendrecht (A2)

This section currently has 2x2 lanes and shoulder running during peak hours. Due to the expected growth on the A1-A9 corridor, interchange Diemen will be drastically realigned and Almere - Haarlem will become the through direction (A1 will run through a TOTSO). This section will be changed with a new tunnel, with 10 lanes, with a 5x2 setup (2 reversible lanes) in the tunnel, which will become 2x5 lanes approaching interchange Diemen.


Section: A9 interchange Badhoevedorp (A4) - interchange Holendrecht (A2)

This section currently has mostly 2x3 lanes, with 4 lanes per direction near interchanges. This section will see a modest upgrade with 2x4 lanes all the way, except approaching interchanges, where 2x5 or 2x6 lanes will be constructed. No exceptional constructions are needed here.


Section: A10 interchange Watergraafsmeer (A1) - interchange Amstel (A2)

This section currently has 2x3 lanes, and will be modestly upgraded to 2x4 lanes. This section has a narrow right-of-way and passes under a section of the Watergraafsmeer classification yard, which means there is not much space.


Related widenings:

A1: Bussum - interchange Eemnes
This section has a very narrow ROW and currently features 2x2 lanes. Shoulder running will be implemented by early 2011.

A2: Amsterdam - Utrecht
This section has recently been widened to 2x5 lanes, but will not be finished near Utrecht until late 2012 due to severe tunnel technical installation problems.

A4: Schiphol - Amsterdam
This section is currently the busiest 2x3 motorway in the Netherlands with 190.000 vehicles per day. For now, shoulder running will be added.

A10: Amsterdam-South
This section currently has 2x3 lanes and is severely congested. As a short-term solution, shoulder running will be added between A2 and A4. There are plans to completely rebuild the area around the motorway, including putting all motorway and rail infrastructure underground with 4x3 lanes. This is very expensive and can only be realized in conjunction with real estate development, but is put on-hold due to the economic situation.
 
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#14,381 ·
A27/A1 widening

Preparatory works will start next week on the A27/A1 expansion project between Utrecht, Hilversum and Amersfoort. This is a large PPP project that will expand A27 to six lanes and A1 to eight lanes.

Full-scale construction is planned to start in July. The expansion is planned for completion by late 2018, so the widening works will last for only 18 months.

 
#14,382 ·
A6 Almere

Construction officially kicked off on A6 through Almere today. A 13 kilometer segment of the motorway will be expanded from four to eight lanes, using a local/express system (4x2 lanes). The € 300 million project will be completed prior to the 'Floriade' in 2022, which is held in Almere. It is a PPP project, so I'm guessing it may be completed earlier, perhaps even in 2020. The A1/A6 project between Diemen and Almere will also likely be completed by late 2017, while the official deadline is 2020.

Both projects are part of the Schiphol - Amsterdam - Almere € 5 billion expansion project, the largest road project in Dutch history.

 
#14,383 ·
Heijmans will release a statement tomorrow morning (before the stock market opens) detailing the impact on its finances.
The N23 / N302 project will end up with a € 32 million loss for Heijmans. That's significant, the whole contract value was approximately € 200 million.

They also took a € 6 million loss on the Drachtsterweg Aquaduct in Leeuwarden (over 2016 alone, it is unclear what the total loss over the entire project is).

Heijmans is one of the largest construction companies in the Netherlands. It recorded a € 110 million loss in 2016. The revenue of Heijmans declined by 45% between 2008 and 2015, however other major construction companies saw similar declines in revenue (profit is another issue).
 
#14,384 ·
A big project in the village of Zwartsluis this weekend, a drawbridge is being moved to its final position. It is part of provincial road N331 (Zwolle - Emmeloord).

The bridge replacement is part of a canal project. They are converting the guard lock into a navigational lock. This makes the canal to Meppel accessible to shipping even at high and low water levels. The 'Zwarte Water' river has varying water levels while the canal to Meppel has a fixed level. Normally this is not a problem for shipping, but when water levels at the 'Zwarte Water' are lower or higher than usual, shipping becomes impossible. The navigational lock makes shipping possible at all times.

 
#14,385 ·
truck parking

Truck stops are making inroads in the Netherlands. A long-discussed truck stop appears to finally start construction off A12 at Duiven. It will be a truck stop with 230 parking spots, it is probably one of the largest in the Netherlands. It is planned to open by July 2017.

It will offer secure parking, showers, free wifi, laundry, a driver's lounge and snacks. It will charge € 20 for overnight parking.

The Netherlands is less of a transit country for trucks, so truck parking was usually limited to motorway service areas. Most parking spaces have been removed along provincial roads and truck parking is banned in residential and often also industrial areas, leaving truckers with little other options than overcrowded motorway service areas (where parking is free).

Theft of cargo is also an incentive for truckers to choose secure parking, which until recent years, was almost non-existent in most of the Netherlands.
 
#14,386 ·
A27 Breda - Utrecht

Some very big news today. They announced a € 389 million replacement of three major bridges, as part of the planned A27 expansion project.

They will completely replace the Merwede Bridge, Hagestein Bridge and Keizersveer Bridge. These are all steel bridges.

Originally, it was planned to build new spans for southbound traffic only, leading to a much-lamented layout of 3 southbound lanes, but 2 to 4 northbound lanes with weird lane splits and a general messed up configuration, with lots of shoulder running.

The allocated budget of € 860 million was too low for a proper widening of such a long segment of motorway (it contains 4 major bridges). The budget is now raised to € 1.25 billion.

The deterioration and emergency truck ban at the Merwede Bridge late 2016 seems to be the direct reason to reconsider the bridge projects of A27. The Merwede Bridge is a steel arch bridge, opened in 1961. The Keizersveer Bridge is a steel truss bridge, opened in 1978 and the Hagestein Bridge is a steel girder bridge, opened 1981. The fatigue problems at the Merwede Bridge will also plague the Keizersveer and Hagestein bridges in the future, so it has been decided to replace them entirely.

Locations of the bridges:
 
#14,388 ·
A10 Amsterdam

A € 990 million contract has been awarded to the 'ZuidPlus' consortium to expand A10 through the south side of Amsterdam from 8 to 12 lanes and build a tunnel under the Amsterdam-Zuid railway station.

The ZuidPlus consortium consists of Fluor, Heijmans and Hochtief (U.S., Dutch & German respectively). It is the most expensive road project in Dutch history (based on the price per kilometer).

Construction is planned to start in 2019, and will be progressively completed until 2028. It is a very complex project, the tunnel will be constructed only 5 meters from the nearest office towers.

A render of the future Amsterdam-Zuid railway station, where A10 will be put underground:
 
#14,389 ·
2016 TomTom traffic index

TomTom released its annual traffic index, also known as the travel time index (TTI). This year, the list of cities has been substantially expanded to include smaller urban areas of 100,000+.

http://www.tomtom.com/en_gb/trafficindex/

Here's a list of Dutch cities and their traffic position in Europe (1 being the worst, 215 being the best).

* 82 Haarlem 27%
* 121 The Hague 24%
* 126 Leiden 23%
* 130 Groningen 23%
* 138 Amsterdam 22%
* 151 Nijmegen 21%
* 158 Arnhem 20%
* 167 Tilburg 19%
* 174 Breda 19%
* 175 Eindhoven 19%
* 178 Rotterdam 19%
* 186 Utrecht 18%
* 192 Amersfoort 17%
* 193 Apeldoorn 17%
* 203 Almere 16%
* 209 Den Bosch 15%
* 213 Zwolle 15%

We can conclude that Dutch cities are in fact not as congested as some would guess. In particular the low ranking of Amsterdam, Rotterdam & Utrecht is surprising. Of course there are several ways to rank traffic congestion. Dutch domestic ranking usually only includes motorways and uses a different methodology.

I'm happy to live in the least congested larger city in the Netherlands and one of the least congested cities in Europe :)
 
#14,391 ·
A27 Keizersveer Bridge

As announced yesterday, the Keizersveer Bridge across the Bergse Maas River will be replaced by an entirely new bridge.

The bridge has an interesting history. The current bridge opened to traffic in 1978, but used recycled spans from the original Moerdijk Bridge. They used six truss spans (three in each direction) that were part of the original Moerdijk Bridge, so these spans are actually much older than 1978, but date back to 1936, so they are over 80 years old.

A recent aerial photo of the Keizersveer Bridge:


The 1978 bridge was not the first bridge at this location. Already in 1931 the first road bridge was built as a truss bridge. It was destroyed in 1940 and 1944. A27 opened in this area in 1968, but narrowed to two lanes across the bridge until it was replaced by the current bridge in 1978.

A 1930s photo of the original Keizersveer Bridge:


It is not yet known what type of bridge will be built for the replacement project, only that it will be a concrete bridge. A cantilevered box girder bridge seems like the most plausible option, as it is cheap and durable (100 year design life). But it is not yet known how they are going to build it, the river is too wide for a single span. The present bridge has two sets of piers in the water.
 
#14,392 · (Edited)
We can conclude that Dutch cities are in fact not as congested as some would guess. In particular the low ranking of Amsterdam, Rotterdam & Utrecht is surprising.
Don't know about this one.
Here in Groningen there was a discussion some years ago because we were top of this list in the Netherlands.
As you all proberly know, we have our traffic jams, but nothing compared to some other city's in the Netherlands.
So how come?
It seems like they compare the delay against normal situation. At least, they did back then.
So, if you're congested all day long en the difference between normal and the extra delay isnt that big, lets say 15 minutes, you proberly end up lower on this list than a city where the difference is huge between rush hour traffic, let's say 30 minutes, and the normal situation.
And with that method a city where you can happily drive most of the day can end up higher on the list than a city wich is congested all day long.
 
#14,393 ·
^^
For example...

My city Groningen has dropped some places.
So, some people here who are involved in traffic related things are sayin, it seems like we are doing the right things. Traffic has increased, but there is less delay.
Maybe that's the case.
But it can also mean that traffic in non rush hours has increased more than it did in the rush hours.
That would mean that rush hour is as bad as it was, but the extra delay has decreased because it takes longer now to travel the same route in the non rush hours.
Then the situation looks better in this method whilst it actually got worse.
 
#14,394 ·
The TomTom Traffic Index uses the 'congestion level', the additional travel time compared to free-flow conditions. This also makes it possible to compare relative traffic congestion, so that the largest cities don't dominate the top of the list simply due to their sheer size of traffic.

The top position of Haarlem is likely due to the closure of the Velsen Tunnel (A22) and the resulting additional traffic congestion on A9, which had one of the largest increases in congestion in all of the Netherlands in 2016. However, this effect was temporary (the tunnel already reopened after a 9 month renovation) so you can expect that Haarlem won't top the list in 2017.

Though I think the Traffic Time Index is not as useful for large urban areas without many motorways. For example in London the 'free flow' (off-peak) travel times are similar to rush hour travel times in Paris (25-30 km/h) due to the lack of motorways. So the TTI would underestimate the level of congestion in London because the traffic speed is low even in non-congested periods.
 
#14,395 ·
It has its flaws...
Ghost jams in bad weather for example.
With snow hundreds of kilometers of jam in the middle of the night for example.
Proberly only a few cars on the road, but with very low speed, so that's a jam then in TomTom's mind

Reading the terms now. Did they alter it a bit?
Indeed freeflow now...I am quite sure the discussion a couple of years back was a little different in the sence that it was compared to a normal situation. And freeflow in the middle of night isn't a normal situation.
Then again, maybe the discussion in my Hometown back then was the wrong one ;)
 
#14,398 ·
Any updated pictures of SAAone?
What are the names of the old and new bridges between Diemen and IJburg?
What is the name of the A1 river crossing?
What is the name of the Aquaduct under the river Vecht? Any pictures?
What is the name of the A1 new arch railway bridge? Pictures please.
Any picture of the A6 Hollandse Brug?
Have the ecopassages for the SAAone been realised?
Who designed the underpasses?
There is really no need for 8 separate posts.
 
#14,400 ·
Now I understand :) Belgium vs The Netherlands in the roads conditions but also in the way how they drive :D

This can explain ->bad drivers are indicator of
 
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