At a highway entrance controlled by a YIELD sign, no safe opening is available in heavy traffic. If stopping is necessary to yield, you should:
Correct answer: D – Stop before entering highway traffic and wait for a safe gap
Traffic already traveling on a limited-access highway has the right-of-way. A driver facing a YIELD sign must slow down, stop when necessary, and proceed only with a sufficient gap. If no safe opening exists, wait before entering the highway travel lane. Pennsylvania’s manual also directs entering drivers to yield to traffic already on the major roadway.
Source: 75 Pa.C.S. § 3321(b)(2) – Vehicle approaching or entering intersection, Pennsylvania Driver's Manual — Ch. 2, “YIELD Sign”, Pennsylvania Driver's Manual — Ch. 2, “Merging Traffic”


