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Old July 27th, 2007, 10:34 PM   #41
go_leafs_go02
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I know Ontario used to have at least one instance of it where it was 3 lanes wide. Highway 7 east of Sarnia, Ontario was 3 lanes wide, and even today, you can tell by the wide shoulders on that road. However, now it is only 2 lanes (1+1)



2+1 roads in present day Ontario allow for a passing lane one way, but due to the double yellow line, passing the other way is not permitted.
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Old July 28th, 2007, 02:02 AM   #42
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That's how it's generally done.
At least here in Portugal (and I think that in all 2+1 roads I've seen all over Europe) it's allways forbiden to cross the divisor lane between the 2 directions.
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Old July 28th, 2007, 02:51 AM   #43
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National Road 8 (DK8 E67) between Kudowa-Zdrój and Duszniki-Zdrój in south Poland











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Old July 28th, 2007, 03:15 AM   #44
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Most 2+1 roads I've seen here in England look like that one above ^ in my town there was a 2+1 road when it was first built but it caused people to crash when they got to the roundabout at the end of the road so now its a extra wide 1+1 road and the extra width makes it easy to overtake.
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Old July 28th, 2007, 04:57 AM   #45
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this is how it looks in Croatia: at the first photo overtaking is permitted in both directions, and at the second only one. second is interesting because of tunnel. today at that section is built full profiled motorway, so this is just one tube of the tunnel for one direction



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Old July 28th, 2007, 09:41 AM   #46
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That first pic is dangerous. People should never cross that line.

Well, maybe i found it dangerous, because our roads are generally packed with cars, in Croatia, intensities are much lower ofcourse.
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Old July 28th, 2007, 12:05 PM   #47
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Quote:
Originally Posted by Chris1491 View Post
That first pic is dangerous. People should never cross that line.

Well, maybe i found it dangerous, because our roads are generally packed with cars, in Croatia, intensities are much lower ofcourse.
it is dangerous. altought visibility is excellent, accidents happens. it is a part of A6, Zagreb - Rijeka, about 25 km before Rijeka and those sections of A6 where is not built full profiled motorway are known as "road of death" in Croatia. fortunately, next year whole motorway will be finished.

at this place (first photo) is large downhill. so: trucks are going slow while going up (thats why they have 2 lanes), but they are going slow down, too, not to burn their brakes. that's why overtaking is permitted. actually, right now there is a traffic in only 2 lanes because it is large buildingside (upgrading to motorway).
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Old July 28th, 2007, 01:29 PM   #48
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How will they get along with teh Tunnel which is stil 2X1?
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Old July 28th, 2007, 01:33 PM   #49
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I guess they add another tube, so this one can be used als 2 lanes + emergency lane?
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Old July 28th, 2007, 01:35 PM   #50
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Quote:
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I guess they add another tube, so this one can be used als 2 lanes + emergency lane?
Probably, but it will cost time. Btw, the tunnel looks vrey good.
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Old July 28th, 2007, 01:38 PM   #51
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second tube is allready finnished and that section is now full profiled motorway. one tube has 3 tracks, one has only 2.
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Old July 28th, 2007, 02:48 PM   #52
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Quote:
Originally Posted by Nephasto View Post
That's how it's generally done.
At least here in Portugal (and I think that in all 2+1 roads I've seen all over Europe) it's allways forbiden to cross the divisor lane between the 2 directions.
No, I've seen the side with only one lane sometimes can overtake going into the other people's fast lane a good example are parts of the IC8 and IP3.

Last edited by DanielFigFoz; July 29th, 2007 at 06:19 PM.
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Old July 28th, 2007, 09:16 PM   #53
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In Spain this kind of roads are quite common.









(Pics by Arriaca)
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Old July 29th, 2007, 11:28 AM   #54
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Gracias por subir las fotos Cicerón.

En España está prohibido construir calzadas sin separación de más de dos carriles a excepción de zonas urbanas o carriles para vehículos lentos.
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Old July 29th, 2007, 02:01 PM   #55
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Quote:
Originally Posted by go_leafs_go02 View Post
I know Ontario used to have at least one instance of it where it was 3 lanes wide. Highway 7 east of Sarnia, Ontario was 3 lanes wide, and even today, you can tell by the wide shoulders on that road. However, now it is only 2 lanes (1+1)

2+1 roads in present day Ontario allow for a passing lane one way, but due to the double yellow line, passing the other way is not permitted.
We call them 'truck climbing lanes' in Northern Ontario, and they're pretty common, especially near intersections and communities.



Not the best illustration. :P They alternate like that, but there is two lane highway between them for about 150 metres, before the other side gets the lane. Traffic generally stays left as the right lane ends after about 750 metres.

This is an example on Google Maps. To the west of the vehicle turning point (instead of making a U-Turn), the eastbound traffic is two lanes while the westbound traffic is one. To the east of the turning point, it alternates. If you follow the highway, these continue alternating for about 40 kilometres, with gaps of 100 to 2000 metres between them, on average.
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Old July 29th, 2007, 02:16 PM   #56
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Quote:
Originally Posted by vid View Post
We call them 'truck climbing lanes' in Northern Ontario, and they're pretty common, especially near intersections and communities.



Not the best illustration. :P They alternate like that, but there is two lane highway between them for about 150 metres, before the other side gets the lane. Traffic generally stays left as the right lane ends after about 750 metres.

This is an example on Google Maps. To the west of the vehicle turning point (instead of making a U-Turn), the eastbound traffic is two lanes while the westbound traffic is one. To the east of the turning point, it alternates. If you follow the highway, these continue alternating for about 40 kilometres, with gaps of 100 to 2000 metres between them, on average.
In Sweden we differentiate between dedicated (and alternating) 2+1 roads and truck climbing lanes. Truck climbing lanes are afterall just for a very limited distance and for the specific purpose to be able to overtake trucks.

Anyway we are getting more of them since they are supposedly relatively safe and spared from accidents...

Examples

http://upload.wikimedia.org/wikipedi...t_of_Skara.jpg

http://upload.wikimedia.org/wikipedi...d/MMLNorr1.JPG
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Old August 3rd, 2007, 03:40 PM   #57
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In Sweden quite a few 13-metre wide 2-lane roads have been turned into 2+1 roads with a centre guard rail for safety reasons. The Swedes have acknowledged that without a central barrier, such roads are death traps.
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Old August 3rd, 2007, 07:09 PM   #58
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Quote:
Originally Posted by ElviS77 View Post
In Sweden quite a few 13-metre wide 2-lane roads have been turned into 2+1 roads with a centre guard rail for safety reasons. The Swedes have acknowledged that without a central barrier, such roads are death traps.
I haven't heard anything about 2+1 roads being deathtraps in Finland.
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Old August 3rd, 2007, 07:29 PM   #59
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Quote:
Originally Posted by vid View Post
We call them 'truck climbing lanes' in Northern Ontario, and they're pretty common, especially near intersections and communities.

... image ...

Not the best illustration. :P They alternate like that, but there is two lane highway between them for about 150 metres, before the other side gets the lane. Traffic generally stays left as the right lane ends after about 750 metres.

This is an example on Google Maps. To the west of the vehicle turning point (instead of making a U-Turn), the eastbound traffic is two lanes while the westbound traffic is one. To the east of the turning point, it alternates. If you follow the highway, these continue alternating for about 40 kilometres, with gaps of 100 to 2000 metres between them, on average.
Heh you nailed it, I wanted to post about the same thing. Here in Ontario in the official road theory book these types of roads are described in a separate section, and the lanes are indeed called "truck climbing lanes". This may also be partially due to the fact that heavy truck traffic is generally much heavier in North America than in Europe. Truckers often turn on their emergency flashers when climbing slowly to signal other drivers to overtake them. However, I have never seen a modern 2+1 road with a crash barrier in the middle in Ontario, but maybe because I haven't been driving that much yet.
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Old August 3rd, 2007, 08:44 PM   #60
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Rodovia Mogi-Bertiga (SP-98), near São Paulo, Brasil:



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