Final answer:
Passing is allowed on the side of the roadway with the broken line, contingent upon safety and clear road conditions.
Step-by-step explanation:
When a centerline on the roadway consists of one solid line and one broken line, passing is allowed on the side with the broken line, given that it is safe to do so. This road marking indicates that cars traveling on the side of the road with the broken line may pass other vehicles when the roadway ahead is clear and it is safe to pass. The solid line serves to prohibit passing for traffic moving in the opposite direction. However, drivers must always ensure that passing maneuvers adhere to all applicable traffic laws and conditions at the time.