How can you tell when you are in the blind spot of another vehicle?

Being in the blind spot of another vehicle means that the driver of that vehicle does not have a clear view of you in their mirrors. When you cannot see the driver's face in the rearview mirror, it indicates that your position on the road falls into their blind spot. This is an important concept for safety as it helps to identify when other drivers may be unaware of your presence, increasing the risk of potential accidents during lane changes or merges.

In contrast, if you could see the driver's face in the rearview mirror, it would imply that you are in a visible position, and the driver is aware of your presence. The other options, such as feeling vibrations or hearing engine noise, do not provide reliable information regarding your location relative to another vehicle’s blind spot. These physical sensations are not indicators of visibility and do not convey the necessary situational awareness regarding the safety of being near other vehicles on the road. Understanding blind spots and how to navigate them is crucial for defensive driving and maintaining safe distances between vehicles.