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National Boards => General Highway Talk => Topic started by: roadman65 on September 07, 2021, 03:57:18 PM

Title: RCUT
Post by: roadman65 on September 07, 2021, 03:57:18 PM
I was reading about the restricted crossing u turn intersection (known by some as superstreet intersections) in which a road near Disney in LBV, FL is constructing 4 of them.

I was wondering if the terminology of RCUT is used in your area, as well as the installation of these.  Or does your area use a different term for these intersections explained here http://onlinemanuals.txdot.gov/txdotmanuals/rdw/rcut.htm ?
Title: Re: RCUT
Post by: Big John on September 07, 2021, 04:05:22 PM
Called J-turn or Michigan left around here
Title: Re: RCUT
Post by: roadman65 on September 07, 2021, 04:14:26 PM
https://safety.fhwa.dot.gov/intersection/rltci/fhwasa14040.pdf
Here is an article by FHWA, using the Michigan Left term in addition to J Turn.
Title: Re: RCUT
Post by: SEWIGuy on September 07, 2021, 04:14:33 PM
There are only a couple in Wisconsin.  This one was constructed about 10 years ago, but will be upgraded to a diamond interchange in the next couple of years.  WISDOT refers to it as a RCUT.

https://www.google.com/maps/place/Green+Bay,+WI/@44.5752952,-88.1687771,947m/data=!3m1!1e3!4m5!3m4!1s0x8802e2e809b380f3:0x6370045214dcf571!8m2!3d44.5133188!4d-88.0132958
Title: Re: RCUT
Post by: Ned Weasel on September 07, 2021, 08:28:44 PM
Quote from: Big John on September 07, 2021, 04:05:22 PM
Called J-turn or Michigan left around here

RCUTs are technically different form Michigan Lefts, despite the similarities in having restricted movements and median U-turns.

A Michigan Left intersection involves two roads only allowing straight-through and right-turn movements, and using downstream median U-turns (on either street, or maybe both in a few cases) as an alternative to the left turns.

An RCUT intersection allows left-turn, straight-through, and right-turn movements from the major road, and only right turns from the minor road.  Median U-turns are provided on the major road to facilitate the straight-through and left-turn movements for the minor road.

A couple of RCUTs in my area:

US 50 and MO 58: https://goo.gl/maps/e8GUTKuMcXhQS4iA9
US 50 and MO 131: https://goo.gl/maps/iDv7rrdEEaUZLa6W7 (Needs updated satellite imagery, but you can tell from Street View.)
Title: Re: RCUT
Post by: roadman65 on September 07, 2021, 10:35:57 PM
Quote from: Ned Weasel on September 07, 2021, 08:28:44 PM
Quote from: Big John on September 07, 2021, 04:05:22 PM
Called J-turn or Michigan left around here

RCUTs are technically different form Michigan Lefts, despite the similarities in having restricted movements and median U-turns.

A Michigan Left intersection involves two roads only allowing straight-through and right-turn movements, and using downstream median U-turns (on either street, or maybe both in a few cases) as an alternative to the left turns.

An RCUT intersection allows left-turn, straight-through, and right-turn movements from the major road, and only right turns from the minor road.  Median U-turns are provided on the major road to facilitate the straight-through and left-turn movements for the minor road.

A couple of RCUTs in my area:

US 50 and MO 58: https://goo.gl/maps/e8GUTKuMcXhQS4iA9
US 50 and MO 131: https://goo.gl/maps/iDv7rrdEEaUZLa6W7 (Needs updated satellite imagery, but you can tell from Street View.)

I think I saw those on the expressway section of US 63 from Columbia to Jefferson City.  You had to make U turns to get back north from the side roads.
Title: Re: RCUT
Post by: hbelkins on September 08, 2021, 12:44:46 PM
Kentucky is installing RCUTs with increasing frequency as safety improvements, and seems to prefer that term to J-turn.

Public outcry recently caused KYTC to scrap plans to build one on US 27 at KY 70 in Pulaski County in favor of a signal.