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=== Retention ===
== In Practice ==
==== Drive-Through Lots ====
these lots can be narrow and congested, with one-way sections, the simplest way to represent them may be as just a one-way drive-through loop. ''Caveat: because both ends of a segment cannot connect to the same junction, if the lot has only one entrance/exit, it is necessary to build the [[Junction Style Guide#Loops|loop using three segments]].''
==== Two parking lots connected to the same street ====