You're on a two-lane, two-way highway approaching a short construction zone where a YIELD TO ONCOMING TRAFFIC sign is posted, with no flagger or temporary signal present. What is that sign telling you?

Correct answer: B. You must give the right-of-way to oncoming traffic already in the single shared lane

This sign is used specifically on two-lane, two-way highways where the work area has reduced the road to a single shared lane — it tells you that you must give the right-of-way to oncoming traffic already using that shared lane, rather than assuming you have priority. It's typically used only where traffic volume is low, the work area is short, and visibility isn't obstructed, since there's no flagger or signal to manage the conflict directly.

Source: MTO Driver's Handbook: Book 7, Section 4.4.1, Yield to Oncoming Traffic