Editing Partial cloverleaf interchange (section)

=== North American examples ===
[[File:I-405 partial cloverleafs at Fountain Valley California.jpg|thumb|Aerial view of a succession of partial cloverleaf interchanges on [[Interstate 405 (California)|I-405]] in Orange County, California.  The closest one in this image, at Brookhurst Street in [[Fountain Valley, California|Fountain Valley]], was originally a full [[cloverleaf interchange]], remnants of which are still visible.]]

There are B4 designs in [[Alberta]]:
* Deerfoot Trail & 17 Ave in Calgary
* Macleod Trail & Anderson Road in south [[Calgary]]: {{citation needed span|This parclo B4 is subject to the traffic flooding problem on a daily basis. Traffic coming off the Macleod Trail freeway overwhelms Anderson Road|date=October 2020}}, resulting in significant delays and frequent accidents, despite the higher maximum speed limit on Anderson Road than Macleod Trail. The style of intersection was made necessary due to the presence of a small private cemetery in one quadrant of the interchange: under Alberta's ''Cemeteries Act'' burial sites cannot be seized.<ref>{{cite web|last=Province of Alberta|url=http://www.qp.alberta.ca/574.cfm?page=C03.cfm&leg_type=Acts&isbncln=9780779723959|title=Cemeteries Act|date = 17 September 2012}}</ref>

Three exist in [[British Columbia]]. In addition, the Solomon Pond Road interchange on [[Interstate 290 (Massachusetts)|I-290]] in [[Northborough, Massachusetts]], was converted from a B2 interchange to a B4 interchange in the mid-1990s with the construction of the [[Solomon Pond Mall]]. Also, the West Road interchange on [[Interstate 75 in Michigan|I-75]] in [[Woodhaven, Michigan]], was upgraded from a B2 to a B4 in the mid 1980s after suburban sprawl had made the B2 interchange obsolete.

In [[Indiana]], the B4 design along [[Indiana State Road 37|IN 37]] at its [[Bloomington, Indiana|Bloomington]] interchange with [[Indiana State Road 46|IN 45/46]] was retained when the former route was converted to become [[Interstate 69 in Indiana|I-69]]'s exit 120 in 2018.

At least four B4 designs are known to exist in [[Kentucky]]:
* [[Cumberland Parkway]] interchange with [[U.S. Route 27 in Kentucky|US 27]] north of [[Somerset, Kentucky|Somerset]], currently six [[ghost ramps]] sit on the northeast part of the interchange for anticipation for the Somerset Northern Bypass extension.
* The [[U.S. Route 127|US 127]] interchange with [[Interstate 64]] in [[Frankfort, Kentucky|Frankfort]].
* US 127 has a second B4 interchange at the [[Bluegrass Parkway]] near [[Lawrenceburg, Kentucky|Lawrenceburg]], about 15 miles (24&nbsp;km) south of the I-64 crossing. This particular interchange is a conversion from a four-loop design at the location of one of the toll booths on the Bluegrass Parkway before its conversion into a freeway. Toll booths were located directly below US 127; through traffic used the through lanes, while both entering and exiting traffic shared a lane directly to the right of the through lanes. The old design was standard for interchanges at toll booths in Kentucky's parkway system of controlled-access toll roads; even though tolls have been removed from all of the roads, many of the old designs still exist at former toll booth sites.
* The [[Kentucky Route 155|Taylorsville Road]] interchange with the [[Interstate 264 (Kentucky)|I-264 Watterson Expressway]] in [[Louisville, Kentucky|Louisville]]. The B4 design was necessary in this case because of the angle at which Taylorsville Road crosses the Watterson.

The [[US 83]] interchange on [[I-80]] in [[North Platte, Nebraska]], has also recently been upgraded to a B4 from a [[Diamond interchange|diamond]].

The parclo B4 is less common in [[Ontario]] than the parclo A4, with the only examples being the following:
* [[Ontario Highway 406|Highway 406]]/St. David's Road interchange on the border of [[St. Catharines]] and [[Thorold, Ontario|Thorold]]
* [[Ontario Highway 402|Highway 402]]/[[Highway 40 (Ontario)|Highway 40]] interchange in [[Sarnia, Ontario|Sarnia]]
* [[Highway 17 (Ontario)|Highway 17]]/[[Greater Sudbury Road 55|Municipal Road 55]] interchange in [[Greater Sudbury|Sudbury]]
* the interchange at [[Lauzon Parkway]] and the [[E. C. Row Expressway]] in [[Windsor, Ontario|Windsor]]

There are two such interchanges in [[Saskatoon, Saskatchewan]], along [[Circle Drive]], at College Drive and Attirdge Drive/Preston Avenue N.

The following B4 interchanges were changed from full cloverleafs:
* [[U.S. Route 73 in Kansas|U.S. 73]]/[[K-7 (Kansas highway)|K-7]] at [[U.S. Route 24 in Kansas|U.S. 24]]/[[U.S. Route 40 in Kansas|U.S. 40]]/State Avenue near [[Basehor, Kansas]], was changed in 2008.
* [[Interstate 695 (Maryland)|I-695]] at [[U.S. Route 40 in Maryland|U.S. 40]] in [[Catonsville, Maryland]], was changed in 2005/2006.
* [[U.S. Route 14 in Minnesota|U.S. 14]]/[[U.S. Route 52 in Minnesota|U.S. 52]] at Civic Center Drive in [[Rochester, Minnesota]], was changed from a cloverleaf in 2004/2005.
* [[Interstate 5 in Washington|I-5]] at South 38th Street in [[Tacoma, Washington]], was changed in the mid 1990s.

Some parclo B4 interchanges such as the intersection of [[Interstate 40]] and [[U.S. Route 401]] in [[Raleigh, North Carolina]], have been fitted with signals at each ramp meeting the arterial in order to allow more lanes on the offramps.  This technique along with the ability to provide two-way signal progression along the arterial allows the parclo B4 to handle an extremely high flow of traffic along the arterial.