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Old November 14th, 2011, 10:32 PM   #1601
ChrisZwolle
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Another issue that the foundation of the shoulders were not always built to handle long-term truck traffic (like months in a row). Sometimes they need to rebuild the shoulder first before a 4-0 system can be put into operation. I know this happened in Germany and some older motorways in the Netherlands (those pre-dating the mid 1960's).
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Old November 14th, 2011, 10:36 PM   #1602
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Quote:
Originally Posted by ChrisZwolle View Post
Another issue that the foundation of the shoulders were not always built to handle long-term truck traffic (like months in a row). Sometimes they need to rebuild the shoulder first before a 4-0 system can be put into operation. I know this happened in Germany and some older motorways in the Netherlands (those pre-dating the mid 1960's).
i'm not sure, but i think i'ver seen something like that on A1 in Austria between Linz and Voralpenkreuz few years ago when it was under major reconstruction.
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Old November 14th, 2011, 10:42 PM   #1603
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Quote:
Originally Posted by mapman:cz View Post
Our new motorways are being built with 11,5 m wide paved carriageway to accomodate 4-0 setup, but D1 was built with 10,75 wide carriageways that do not fit for 4-0 setup. So we either need to survive the 3-0 setup unless at least one new wider carriageway is built, or we need to invest to additional paved strip etc. BTW today many news articles were published stating that the police refused to support the 3-0 setup and they demand 4-0.
The police are demanding 4-0 in 10.75 metres? Yikes! With Jersey barriers like this:
http://en.wikipedia.org/wiki/File:Jersey_barrier_2.png

... that leaves at most about 2.5 metres per lane. What would be a safe speed under such conditions? 80 km/h?
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Old November 14th, 2011, 10:43 PM   #1604
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This is common for a 4-0 setup. Not only for renovation, but also for a road widening.

1. Phase I: widening / reinforcing outside shoulders.


2. Phase II: widening the inside shoulder. (phase I and II can be swapped)


3. Phase III: 4-0 setup, widening / rebuilding the other carriageway.


(images are schematic and not to scale)
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Old November 14th, 2011, 10:44 PM   #1605
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Quote:
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... that leaves at most about 2.5 metres per lane. What would be a safe speed under such conditions? 80 km/h?
Definitely not. A truck alone is 2.55 m wide, and that is excluding mirrors. Additionally, you need a margin of error (sinus track of a vehicle).

It is possible to have a 2 m left lane and 3 m right lane, but experience shows that the left lane becomes underused and is prone to accidents and congestion.
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Old November 14th, 2011, 11:02 PM   #1606
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Originally Posted by ChrisZwolle View Post
It is possible to have a 2 m left lane and 3 m right lane, but experience shows that the left lane becomes underused and is prone to accidents and congestion.
I drove this setup on the A23 in Vienna earlier this year. Nearly everyone was scared to use the 2.0 metre left lane. I used it, but it demanded intense concentration. It was signed for 60 km/h.

Thanks for the schematic. It's easy to understand.
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Old November 14th, 2011, 11:02 PM   #1607
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Yeah, those images show what most likely will be executed on D1 as well (hopefully!)

4-0 setup, that the police demand, is not possible on 10,75 m, they expect the shoulders to be widened, no matter if the inner or outer ones.
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Old November 15th, 2011, 12:12 PM   #1608
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The RSD wants to issue complaint to Eurovia on the construction of the D1 in Ostrava. They have found inapropriate materials in the underlying layers, such as constructions waste, scrap and junk, even a tree log.





No wonder the motorway created bumps and wawes shortly after opening.


The RSD is rather strong in its statements and they demand full repair even if it means rebuilding the motorway. I am curious about how this will go on.
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Old November 15th, 2011, 04:19 PM   #1609
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Some fresh aerials of Prague City Ring - Blanka tunnels construction site - dated 3.Oct.2011 (courtesy of tunelblanka.cz):

Location:


End of bored section near Troja


New Troja bridge under construction



Letná (near Sparta stadium)


Prašný most


Myslbekova


Malovanka interchange
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Old November 18th, 2011, 01:22 PM   #1610
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Vysočanská radiála opening is getting closer. map


It should connect the Prague inner and outer ring in the future, at the moment it starts at R1 (Pražský okruh) x R10 interchange and ends at Kbelská (The continuation towards the city center to the future eastern part of the city inner ring is planned).

At the moment it should mainly serve North - East and perhaps North - South transit, together with Kbelska, being a substitude for the missing north east part of the Pražsky okruh (therefore the board with Pražsky okruh in the video). Also the Kbelska x Veselska x D8 interchange is being upgraded to free flowing, creating free flowing connection between D8 and R1 and R10 in the north of Prague. map

Thanks to Kasme www.ceskedalnice.cz there are videos of the current state.

Direction Kbelska - R10 (west to east)


Direction R10 - Kbelska (east to west)


Interchange, Kbelska x Veselska x D8
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Old November 19th, 2011, 04:41 PM   #1611
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R7 Praha - Slaný

Some photos I took of R7 between Praha and Slaný. This is expressway is in a rather poor condition. There is also a pedestrian crossing with traffic lights at the airport, I believe they are the only traffic lights between Praha and Chomutov (maybe even the German border).

route:


1.
image hosted on flickr

R7-1 by Chriszwolle, on Flickr

2.
image hosted on flickr

R7-2 by Chriszwolle, on Flickr

3.
image hosted on flickr

R7-3 by Chriszwolle, on Flickr

4.
image hosted on flickr

R7-4 by Chriszwolle, on Flickr

5.
image hosted on flickr

R7-5 by Chriszwolle, on Flickr

6.
image hosted on flickr

R7-6 by Chriszwolle, on Flickr

7.
image hosted on flickr

R7-7 by Chriszwolle, on Flickr

8.
image hosted on flickr

R7-8 by Chriszwolle, on Flickr

9.
image hosted on flickr

R7-9 by Chriszwolle, on Flickr

10.
image hosted on flickr

R7-10 by Chriszwolle, on Flickr

11.
image hosted on flickr

R7-11 by Chriszwolle, on Flickr

12.
image hosted on flickr

R7-12 by Chriszwolle, on Flickr

13.
image hosted on flickr

R7-13 by Chriszwolle, on Flickr

14.
image hosted on flickr

R7-14 by Chriszwolle, on Flickr

15.
image hosted on flickr

R7-15 by Chriszwolle, on Flickr

16.
image hosted on flickr

R7-16 by Chriszwolle, on Flickr

17.
image hosted on flickr

R7-17 by Chriszwolle, on Flickr

18.
image hosted on flickr

R7-18 by Chriszwolle, on Flickr

19.
image hosted on flickr

R7-19 by Chriszwolle, on Flickr

20.
image hosted on flickr

R7-20 by Chriszwolle, on Flickr

21.
image hosted on flickr

R7-21 by Chriszwolle, on Flickr

22.
image hosted on flickr

R7-22 by Chriszwolle, on Flickr

23.
image hosted on flickr

R7-23 by Chriszwolle, on Flickr

24.
image hosted on flickr

R7-24 by Chriszwolle, on Flickr

25.
image hosted on flickr

R7-25 by Chriszwolle, on Flickr

26.
image hosted on flickr

R7-26 by Chriszwolle, on Flickr
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Old November 20th, 2011, 12:24 PM   #1612
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Quote:
Originally Posted by ChrisZwolle View Post
It's been a while since I posted some new footage of the Czech Republic, due to my computer acting up. Now I got a new PC which renders videos incredibly fast (from 30+ minutes down to 3 minutes).

R6 Karlovy Vary

The R6 and route I/6 through Karlovy Vary.
i have a question about R6
are some chance to see some highway between Carslbad and Nove Straseci (I think that's the missing portion to Prague)?
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Old November 20th, 2011, 12:59 PM   #1613
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i have a question about R6
are some chance to see some highway between Carslbad and Nove Straseci (I think that's the missing portion to Prague)?
There are chances that you would see the expressway maybe finished someday in the 20s. When you go to the RSD page planned construction there is an interactive map with the list of all planned constructions going on. The R6 seems rather prepared with most of the paperwork done. If you zoom the map, you can find flyers about the sections, with construction timing on the last page (I wouldnt depend on these numbers, but they are informative). The lack of funds will probably move this project into the future every year. If something we might see the bypasses being under construction around 2014.

BTW, similar map for the sites under construction undergoing construction




Something else now. Just read this article about the risky roads in CZ. Couldn't resist to not post the map. More dark means deadlier.



The map represents roads of first class or higher and around 30 % of all accidents with serious consequences. The police noticed, that in around every third accident the bad state of the road or traffic signs play a role.

Last edited by Surel; November 20th, 2011 at 02:13 PM.
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Old November 20th, 2011, 01:35 PM   #1614
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Quote:
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.
Thank's for this information.
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Old November 20th, 2011, 02:07 PM   #1615
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Ah, I've driven some of the most dangerous roads in CZ. I/7, I/10, I/27 and the most dangerous expressway; R7. I should've bought a T-shirt with the text "I survived Czechia".
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Old November 20th, 2011, 03:47 PM   #1616
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Ah, I've driven some of the most dangerous roads in CZ. I/7, I/10, I/27 and the most dangerous expressway; R7. I should've bought a T-shirt with the text "I survived Czechia".
Did you have some "threathening" experiences? . BTW, how does your statistics of km in CZ look after this summer?
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Old November 20th, 2011, 03:51 PM   #1617
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Did you have some "threathening" experiences?
Not that much. There was one instance where there was a tractor 20 km/h on a 2+1 road road which narrowed to one lane where a small truck almost crashed into (he avoided the tractor by driving through the berm, I was sure it was going to tip over, but it didn't).

They do drive faster outside urban areas in CZ than in the Netherlands, but in NL this is barely possible due to heavy traffic. 90 - 110 km/h on I-roads outside urban areas is not uncommon in CZ. And they pass somewhat dangerously close sometimes, but then again, passing is banned on nearly all two-lane roads in the Netherlands, so we're just not used to anything that's more dangerous than going 5 km/h over the limit
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Old November 20th, 2011, 04:20 PM   #1618
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so we're just not used to anything that's more dangerous than going 5 km/h over the limit
Because I drove more kms behind the wheel in NL then CZ I strugle with the same thing when back in CZ . Also when I am a passanger then .
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Old November 23rd, 2011, 02:24 PM   #1619
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Final video from the Czech Republic; the easternmost 32 kilometers of R6 near Praha

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Old November 23rd, 2011, 04:01 PM   #1620
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Chris, as I see, you traveled almost all bohemian D and R roads, therefore I'd like to ask one thing. Do you think, that czech R roads might be signed with "motorway" sign? If so, are there any exemptions that don't fit that (I'd stress out R7, R46, R63, R35 near Liberec)? We have some idea of "re-signing" being discussed over here that would help us to use a "motorroad" sign on regular grade-separated highways as in Germany or other EU countries, where the non-motorized traffic is not sutiable ...
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