AARoads Forum

National Boards => General Highway Talk => Topic started by: Revive 755 on December 30, 2009, 01:01:38 PM

Title: Maryland site on unconventional intersections and interchanges
Post by: Revive 755 on December 30, 2009, 01:01:38 PM
http://attap.umd.edu/uaid_ags.php?UAIDType=4&Submit=Submit&iFeature=1 (http://attap.umd.edu/uaid_ags.php?UAIDType=4&Submit=Submit&iFeature=1)

Title: Re: Maryland site on unconventional intersections and interchanges
Post by: Bryant5493 on December 30, 2009, 04:31:38 PM
^^
Cool site. That first drawing is just a "Michigan Left," isn't it?


Be well,

Bryant
Title: Re: Maryland site on unconventional intersections and interchanges
Post by: bulldog1979 on February 20, 2010, 03:47:09 AM
Quote from: Bryant5493 on December 30, 2009, 04:31:38 PM
^^
Cool site. That first drawing is just a "Michigan Left," isn't it?


Be well,

Bryant

Nope. The "Michigan Left" on that site is the "Median U-turn crossover".
Title: Re: Maryland site on unconventional intersections and interchanges
Post by: roadfro on February 20, 2010, 11:00:29 PM
The "Contraflow Left Interchange" is a concept I've never seen before. It has the benefit of allowing cross street left turns to proceed simultaneously, but not much else. It'd probably be better to just implement diamond phasing at the signals of a typical diamond.

The "Echelon" is another interesting concept I've never seen before either. That one would be interesting to implement, but (like the "Center Turn Overpass") would be a difficult right of way challenge in an urban area.