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m →North American examples: I added a comma after "Kansas", "Maryland", "Minnesota", and "Washington". |
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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.
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