Some interchanges utilize features of both a diamond and a cloverleaf interchange. These interchanges may feature one or more loop ramps in addition to diamond ramps. They might be used in cases where real estate for the interchange is limited or when there is significantly higher traffic volume in one direction over another. Types include the parclo A2, where the loop ramps form on-ramps, parclo B2 where the loop ramps are off-ramps, and parclo B4, which utilizes six ramps with multiple on-ramps but a single off-ramp. See Kurumi’s Diamond/Cloverleaf Interchanges for more.