Which sign would indicate that vehicles must yield to traffic on a two-way street?

The Yield Sign is specifically designed to inform drivers that they must yield or give way to oncoming traffic. Its purpose is to ensure safety by indicating that there might be another vehicle approaching that has the right of way. When a driver sees this sign, they know it is crucial to slow down and prepare to stop if necessary to allow other vehicles to proceed.

In the context of a two-way street, a yield sign effectively directs vehicles to be cautious and to give priority to the flow of traffic coming from the opposite direction. This is especially important in scenarios where visibility may be limited or where intersections are present.

Other signs listed, such as the Two Way Traffic Sign, simply indicate the nature of the road but do not impose any requirements on driver behavior regarding yielding. A No Parking Sign restricts parking in a particular area and does not pertain to yielding. Similarly, a Road Closed Sign indicates that a section of the road is not accessible but doesn’t relate to the yielding of traffic. Thus, the Yield Sign is the most appropriate choice for indicating that vehicles must yield to traffic on a two-way street.