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View Poll Results: Which is the busiest Freeway
401-Toronto 170 57.43%
Santa Monica Freeway-LA 96 32.43%
Southwest Freeway-Houston 14 4.73%
I-85-Atlanta 16 5.41%
Voters: 296. You may not vote on this poll

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Old August 9th, 2010, 09:40 AM   #621
Martin Ferraro
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http://www.fhwa.dot.gov/policyinformation/tables/02.cfm

California Los Angeles-Long Beach-Santa Ana I-405 374,000
California Los Angeles-Long Beach-Santa Ana 60 337,000
California Mission Viejo I-5 334,000
Illinois Chicago (IL-IN) I-90 329,542
California Los Angeles-Long Beach-Santa Ana I-110 328,000
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Old August 10th, 2010, 02:18 AM   #622
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Quote:
Originally Posted by ChrisZwolle View Post
No. They are simply not sure if there are busier roads. However, we have ruled out other potentials als Sao Paulo and Buenos Aires, so it's almost certain the 401 is the world's busiest road. There are just no worldwide statistics to prove this.

To top the 401, you need a traffic volume of more than 430,000 vehicles per day. To reach such a volume, you need at least a freeway with 16 lanes or more. There aren't many of those.
I doubt that you really do need 16 lanes for this amount of traffic. I belive it all probably depends very much on the relation between the amount of peak traffic and the regular traffic in the times between.

I also really don't know how all these numbers are counted and how each of the numbers of the counted traffic are defined, which would be very interesting to know.
They can for example stand for the numbers of cars passing a certain section or point per day, or they can also stand for the number of cars using the entire road (defined by the roads name) overall.

Here a little example:
Wikipedia for example states that the Boulevard Péripherique in Paris in 2002 had a gigantic traffic of between 1.1 and 1.2 million vehicles per day (89% light vehicles, 7% trucks, 4% motorbikes; 25% of the traffic in Paris.)
source: statistics fromhttp://en.wikipedia.org/wiki/Boulevard_Peripherique

These numbers there for example are far higher than the official numbers for the busiest German Autobahn section which is a section of the the A100 in Berlin , where the official average amount of daily traffic in 2007 was 191400 cars per day. (source in german:http://www.spiegel.de/auto/aktuell/0...471455,00.html)
I doubt these two numbers are really comparable in any reasonable way, because it looks as if one number was a number for the entire city ring and the other number just that amount for one single small section from a longer road. They both seem to be based on reliable official numbers, just defined very differently.

If the mentioned numbers for the 401 in Toronto are not defined by cars passing a definite point or section per day (like the 191400 cars per day in Berlin in 2007) but defined simmilar to the numbers from Paris as in "cars using that road named 401", then its probably not even anywhere close to being the worlds busiest road, despite its many lanes. If it is comparable to the number from that autobahnsection Berlin then it indeed is a pretty impressive amount of traffic.
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Last edited by Alemanniafan; August 10th, 2010 at 02:27 AM.
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Old August 10th, 2010, 03:23 AM   #623
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Quote:
Originally Posted by Alemanniafan View Post
I doubt that you really do need 16 lanes for this amount of traffic. I belive it all probably depends very much on the relation between the amount of peak traffic and the regular traffic in the times between.

I also really don't know how all these numbers are counted and how each of the numbers of the counted traffic are defined, which would be very interesting to know.
They can for example stand for the numbers of cars passing a certain section or point per day, or they can also stand for the number of cars using the entire road (defined by the roads name) overall.

Here a little example:
Wikipedia for example states that the Boulevard Péripherique in Paris in 2002 had a gigantic traffic of between 1.1 and 1.2 million vehicles per day (89% light vehicles, 7% trucks, 4% motorbikes; 25% of the traffic in Paris.)
source: statistics fromhttp://en.wikipedia.org/wiki/Boulevard_Peripherique

These numbers there for example are far higher than the official numbers for the busiest German Autobahn section which is a section of the the A100 in Berlin , where the official average amount of daily traffic in 2007 was 191400 cars per day. (source in german:http://www.spiegel.de/auto/aktuell/0...471455,00.html)
I doubt these two numbers are really comparable in any reasonable way, because it looks as if one number was a number for the entire city ring and the other number just that amount for one single small section from a longer road. They both seem to be based on reliable official numbers, just defined very differently.

If the mentioned numbers for the 401 in Toronto are not defined by cars passing a definite point or section per day (like the 191400 cars per day in Berlin in 2007) but defined simmilar to the numbers from Paris as in "cars using that road named 401", then its probably not even anywhere close to being the worlds busiest road, despite its many lanes. If it is comparable to the number from that autobahnsection Berlin then it indeed is a pretty impressive amount of traffic.
I guess that we are toalking about AADT (annual average daily traffic) or TMDA (tránsito medio diario anual)...
And yes it is defined like the numbers of cars passing a certain section per day.


(sorry if my english is not good)
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Old August 10th, 2010, 10:34 AM   #624
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Quote:
Originally Posted by Alemanniafan View Post
I doubt that you really do need 16 lanes for this amount of traffic. I belive it all probably depends very much on the relation between the amount of peak traffic and the regular traffic in the times between.
That has been taken into account. The general rule of the thumb is the (number of lanes* 2200 vehicles * 12 hours = max traffic volume for urban roads). For example, 10 lanes * 2200 vehicles * 12 hours = 264,000 vehicles per day.

Quote:
I also really don't know how all these numbers are counted and how each of the numbers of the counted traffic are defined, which would be very interesting to know.
They can for example stand for the numbers of cars passing a certain section or point per day, or they can also stand for the number of cars using the entire road (defined by the roads name) overall.
The number of vehicles for an entire road is a COMPLETELY USELESS statistic. How can you compare a 30 km Paris Boulevard to a 100 km Highway 401?

The only thing that counts are the traffic volumes between two junctions. Otherwise you simply cannot compare.

Quote:
Here a little example:
Wikipedia for example states that the Boulevard Péripherique in Paris in 2002 had a gigantic traffic of between 1.1 and 1.2 million vehicles per day (89% light vehicles, 7% trucks, 4% motorbikes; 25% of the traffic in Paris.)
source: statistics fromhttp://en.wikipedia.org/wiki/Boulevard_Peripherique

These numbers there for example are far higher than the official numbers for the busiest German Autobahn section which is a section of the the A100 in Berlin , where the official average amount of daily traffic in 2007 was 191400 cars per day. (source in german:http://www.spiegel.de/auto/aktuell/0...471455,00.html)
You're comparing buffalo's with zebra's, how can you compare a 30 km BP with a 1 km A100 section and then state BP is busier? You need to compare similar values.

It baffles me that people just take that BP value for granted, and believe there are 1.1 million vehicles per day on that road. Yes there are, but on the entire road. Once again; you cannot compare an entire road with a one-spot traffic count.


Quote:
I doubt these two numbers are really comparable in any reasonable way, because it looks as if one number was a number for the entire city ring and the other number just that amount for one single small section from a longer road. They both seem to be based on reliable official numbers, just defined very differently.
Indeed, different definities, thus completely useless to compare.

Quote:
If the mentioned numbers for the 401 in Toronto are not defined by cars passing a definite point or section per day (like the 191400 cars per day in Berlin in 2007) but defined simmilar to the numbers from Paris as in "cars using that road named 401", then its probably not even anywhere close to being the worlds busiest road, despite its many lanes. If it is comparable to the number from that autobahnsection Berlin then it indeed is a pretty impressive amount of traffic.
The 401 count is for one spot. So it is the busiest road, it handles over 2 times more traffic than the Berlin A100.

The Paris BP has mostly 8 - 10 lanes (sometimes only 4!) thus the maximum volumes are probably around 220,000 - 250,000 vehicles per day on the busiest sections.
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Old August 10th, 2010, 11:22 AM   #625
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^hmm, there are 24 (23,94 to be precise) hours in a day, not 12
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Old August 10th, 2010, 11:34 AM   #626
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That is correct.

However, freeways *never* operate on full capacity 24 hours a day in both directions. The general rule of the thumb is that 10 - 12 hours of full capacity usually coincides with the daily traffic volume.

Often, 10 hours is used for (semi)-rural and 12 for urban freeways. Sometimes this can be more, but it'll generally mean excessive congestion. As much as 14 hours has been recorded on extremely busy freeways.

Otherwise you'll get; (10 lanes * 24 hrs * 2200 veh. = 528,000) vehicles per day on a 10-lane freeway. The reality shows that never happens. The busiest 10-lane freeways in the world usually get around 250,000 - 280,000 vehicles per day.
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Old August 10th, 2010, 06:28 PM   #627
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Here's a picture of Highway 401's busiest section, between the Weston Road and Highway 400 interchanges in Toronto.

image hosted on flickr


As of 2006, this segment handles about 430,000 AADT and that number swells to 505,000 during the summer months as many travelers use the 401 in central Ontario to get to other parts of the province.

I'm sure a more recent stat have a similar AADT or it could possibly be higher as the Greater Toronto Area has grown considerably in the late 2000's. The 401 is the only full (untolled) east-west freeway in the city. The Gardiner Expressway ends just east of downtown.
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Old August 10th, 2010, 07:53 PM   #628
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Quote:
Originally Posted by ChrisZwolle View Post
That is correct.

However, freeways *never* operate on full capacity 24 hours a day in both directions. The general rule of the thumb is that 10 - 12 hours of full capacity usually coincides with the daily traffic volume.

Often, 10 hours is used for (semi)-rural and 12 for urban freeways. Sometimes this can be more, but it'll generally mean excessive congestion. As much as 14 hours has been recorded on extremely busy freeways.

Otherwise you'll get; (10 lanes * 24 hrs * 2200 veh. = 528,000) vehicles per day on a 10-lane freeway. The reality shows that never happens. The busiest 10-lane freeways in the world usually get around 250,000 - 280,000 vehicles per day.
Rush hour starts on 06 and ends on 21-22, so that' at least 15 hours.
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Old August 10th, 2010, 07:58 PM   #629
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It should be noted that during congestion capacity is lower. More congestion does not mean the traffic volumes are actually higher too. The throughput of a motorway at 20 km/h is lower than the optimal speed (=~ 90 km/h).
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Old August 13th, 2010, 02:38 AM   #630
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Quote:
Originally Posted by ChrisZwolle View Post
It should be noted that during congestion capacity is lower. More congestion does not mean the traffic volumes are actually higher too. The throughput of a motorway at 20 km/h is lower than the optimal speed (=~ 90 km/h).
Well I'm not sure. More people drive during rush hour so it is expected that volumes increase during this period. However like all other stats this reflects road capacity and congestion/gridlock... but usage for those rush hours should be higher than other (busy) times of the day.
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Old August 15th, 2010, 05:43 AM   #631
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Marginal Tietê, Sao Paulo - SP, Brazil:


by André Bonacin(Panoramio)


by André Bonacin(Panoramio)


by marlonrocha(Panoramio)

Heavy traffic!
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Old August 16th, 2010, 07:16 AM   #632
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Nice pics! I like the interchanges over the river... but it must look like a mess at street level.

Here's a picture Highway 401 on a snowy day.
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Old August 17th, 2010, 07:50 AM   #633
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that's cool.
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Old August 20th, 2010, 01:52 AM   #634
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Those Brazillian Roads are pretty neat. But I think something about this thread needs to be emphasized. The 401 is the king of all roads.

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Old August 21st, 2010, 02:45 AM   #635
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Quote:
Originally Posted by sonysnob View Post
Those Brazillian Roads are pretty neat. But I think something about this thread needs to be emphasized. The 401 is the king of all roads.

Nice Audi R8
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Old August 21st, 2010, 02:54 AM   #636
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Quote:
Originally Posted by ChrisZwolle View Post
To top the 401, you need a traffic volume of more than 430,000 vehicles per day. To reach such a volume, you need at least a freeway with 16 lanes or more. There aren't many of those.
How does the A15/A16 do between Ridderkerk and Ridderkerk North? It has 16 lanes but it's mostly free flowing so I guess it won't go over 230-240.000 AADT?
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Old August 21st, 2010, 12:07 PM   #637
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Yeah the A15/A16 has overcapacity. Traffic congestion there is only a result of worsened flow downstream, the traffic volume on that section is 220,000 vehicles per day.

But I don't really think you can compare that section with the 401, it's basically a 2 km 4x4 lane section between two interchanges where A15 and A16 just happen to run next to each other. There are no exits in between.
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Old August 22nd, 2010, 07:27 PM   #638
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Here's a video of Highway 401 I found, showing some of it's busiest sections.



Click here for HD and info: http://www.youtube.com/watch?v=ZIMEg4PxRaA

Hope you enjoy it!
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Old March 6th, 2011, 07:20 AM   #639
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It's a little known fact (and it'll cost ya) that if you really don't want to deal with the traffic congestion, you can actually rent the 401 and have it all to yourself (note single vehicle).


[img][/img]
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Old March 6th, 2011, 07:30 PM   #640
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Yeah. Right.
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