What should you do if you can't see the driver's face in their side view mirror?

When you're unable to see the driver's face in their side view mirror, it typically indicates that they may not be aware of your presence on the road. This situation calls for caution, as the driver could change lanes or make a maneuver without knowing you are there. Therefore, assuming the driver can't see you is prudent; it prompts you to take extra precautions.

By adopting this mindset, you are more likely to avoid potential accidents. It emphasizes the importance of being vigilant and expecting that other drivers may not be aware of your vehicle's position, thus ensuring you're prepared to react accordingly. In contrast, options like slowing down and waiting, honking, or accelerating to pass could lead to misunderstandings or risky situations on the road, making "assuming the driver can't see you" the safest approach.