Editing Partial cloverleaf interchange (section)

===A2 and B2===
[[File:Parclo B2.svg|thumb|upright|B2 configuration for right-hand traffic, or A2 for left-hand traffic.]]
Parclo A2 and B2 configurations contain four ramps. On each side of the freeway there is a loop ramp and a directional ramp. In parclo A2, the loop ramps serve as on-ramps and the directional ramps serve as off-ramps. In parclo B2 the roles are reversed. Both on- and off-ramps require controlled intersections at the arterial road (sometimes loop and directional ramps from the same side of the freeway will utilize the same intersection).

The parclo A2 and B2 are commonly used on rural freeways such as [[Ontario Highway 402|Highway 402]] and [[Ontario Highway 416|Highway 416]], where the ramps can be added without widening the street overpass/underpass to include deceleration lanes (normally needed on the A4 in order to safely enter the loop ramps that lead to the freeway). The parclo A2 and B2 ramps are also usually longer and allow for higher speeds than their A4 counterparts because of rural land availability. It is possible to upgrade an A2 to an A4 by adding directional ramps, serving arterial-to-freeway traffic that would otherwise be forced to make a left turn to enter the loop ramps.