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I removed the following code posted by 24.251.194.121:
[[Stack interchange between Arizona 101 Loop and 202 Loop alongside the Salt River at Tempe. Photo taken 04/22/05..jpg|thumb|350px|right|An aerial photo of a stack Interchange at Loop 101 and Loop 202.]]
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-- Thisisbossi 21:52, 21 June 2006 (UTC)
The article states:
"In another, hypothetical, variation, a combination between a Michigan Left at grade intersection and the diamond interchange, all left turns from the minor road onto the freeway on-ramps can be eliminated. This could be done by implementing u-turn lanes on the freeway( assuming it is divided with a wide enough median). The u-turn lanes would be at least 400 metres away from the point where the on-ramps meet the freeway. Traffic that would usually wish to turn left onto the freeway would instead turn right in what would initially appear to be the wrong direction, drive until the u-turn lane, and make a u-turn, which would send them the same direction as an earlier left turn would have. The benefits of this type of intersection would be increased safety, as cars would no longer have to turn left across traffic to get onto the freeway. This is all hypothetical, as it has not been implemented anywhere."
This cannot be implemented on the main part of the freeway--are you referring to a U-turn on the main part of the freeway? Would the U-turn be a left-handed exit from the mainline? This tight U-turn setup exiting the mainline freeway on the left might not be desirable given the 75 MPH (120 km/h) design speed of most Michigan freeways. Also, the weaving from the on-ramp to the U-turn, crossing all that traffic, while not a problem on a signalized surface street (where most Michigan lefts are found), is not a good thing on a freeway.
Or, do you propose a Michigan left turn for the diamond interchange using frontage roads? This has already been done, in many places along I-96 and I-696 in metro Detroit, and also along I-94 in southern Macomb County. See [1] or [2].
The above examples are used where there is restricted land for the freeway. More commonly, the left turns are eliminated from the surface street by means of a Parclo A4. (Yes, Michigan has a fair amount of Parclo A4 interchanges.) -- 141.213.178.11 18:22, 22 December 2006 (UTC)
See Talk:Bowtie (road)#Dumbbell interchange. -- Chaswmsday ( talk) 14:17, 8 October 2012 (UTC)
http://www.ite.org/membersonly/itejournal/pdf/JKA85A24.pdf -- Hans Haase ( talk) 08:17, 4 June 2014 (UTC)
Does/should the article include what I think is called a full diamond as illustrated? An example is in Detroit. 2A00:23C6:1482:A100:1172:ECE8:BA86:8A9E ( talk) 12:49, 10 February 2021 (UTC)
This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||
|
I removed the following code posted by 24.251.194.121:
[[Stack interchange between Arizona 101 Loop and 202 Loop alongside the Salt River at Tempe. Photo taken 04/22/05..jpg|thumb|350px|right|An aerial photo of a stack Interchange at Loop 101 and Loop 202.]]
If you wish to post an image, please make sure to use the correct filename. You can obtain a filename by finding the file on Wikipedia or Wikimedia and then copy/pasting the text that reads Image:blahblahblah.
You may also refer to the Help page for uploading and adding images to articles.
-- Thisisbossi 21:52, 21 June 2006 (UTC)
The article states:
"In another, hypothetical, variation, a combination between a Michigan Left at grade intersection and the diamond interchange, all left turns from the minor road onto the freeway on-ramps can be eliminated. This could be done by implementing u-turn lanes on the freeway( assuming it is divided with a wide enough median). The u-turn lanes would be at least 400 metres away from the point where the on-ramps meet the freeway. Traffic that would usually wish to turn left onto the freeway would instead turn right in what would initially appear to be the wrong direction, drive until the u-turn lane, and make a u-turn, which would send them the same direction as an earlier left turn would have. The benefits of this type of intersection would be increased safety, as cars would no longer have to turn left across traffic to get onto the freeway. This is all hypothetical, as it has not been implemented anywhere."
This cannot be implemented on the main part of the freeway--are you referring to a U-turn on the main part of the freeway? Would the U-turn be a left-handed exit from the mainline? This tight U-turn setup exiting the mainline freeway on the left might not be desirable given the 75 MPH (120 km/h) design speed of most Michigan freeways. Also, the weaving from the on-ramp to the U-turn, crossing all that traffic, while not a problem on a signalized surface street (where most Michigan lefts are found), is not a good thing on a freeway.
Or, do you propose a Michigan left turn for the diamond interchange using frontage roads? This has already been done, in many places along I-96 and I-696 in metro Detroit, and also along I-94 in southern Macomb County. See [1] or [2].
The above examples are used where there is restricted land for the freeway. More commonly, the left turns are eliminated from the surface street by means of a Parclo A4. (Yes, Michigan has a fair amount of Parclo A4 interchanges.) -- 141.213.178.11 18:22, 22 December 2006 (UTC)
See Talk:Bowtie (road)#Dumbbell interchange. -- Chaswmsday ( talk) 14:17, 8 October 2012 (UTC)
http://www.ite.org/membersonly/itejournal/pdf/JKA85A24.pdf -- Hans Haase ( talk) 08:17, 4 June 2014 (UTC)
Does/should the article include what I think is called a full diamond as illustrated? An example is in Detroit. 2A00:23C6:1482:A100:1172:ECE8:BA86:8A9E ( talk) 12:49, 10 February 2021 (UTC)