What does the term "blind spot" refer to?

The term "blind spot" refers to areas around your vehicle that are not visible in your mirrors. Every vehicle has specific regions on the sides and rear that cannot be seen through the rearview or side mirrors. These zones can obscure other vehicles, pedestrians, or obstacles, which is why it is essential for drivers to be aware of them when changing lanes or merging. Understanding where your blind spots are helps in making safer driving decisions, as it reminds you to physically check these areas by turning your head to look over your shoulder.

The other options do not accurately define a blind spot. The spaces between lanes on the road pertain to lane markings and are not related to visibility. Areas where road signs are unreadable refer to obstructions that could hinder a driver's ability to see important traffic signs, rather than areas of visibility around a vehicle. Points where other vehicles appear and disappear might relate to perceptions while driving, but it does not capture the essence of a blind spot, which specifically pertains to visibility limitations around the vehicle itself.