What should you do if you can't see a truck driver's rearview mirrors?

Answer: B — You should not follow too closely

If you cannot see a truck driver's rearview mirrors, this indicates that you are likely driving in a blind spot. Trucks have large blind spots on all sides, and if you cannot see the mirrors, it means the driver cannot see you either. Therefore, it is crucial not to follow too closely to avoid being in that blind spot. Maintaining a safe distance allows the truck driver to have better visibility of your vehicle, as well as gives you more time to react in case of sudden movements from the truck. Following closely could increase the risk of an accident, especially if the truck needs to change lanes or stop unexpectedly. Using your horn or attempting to speed ahead of the truck may not be safe strategies, as these actions could startle the driver or lead to dangerous maneuvers. Thus, the best course of action is to maintain a safe distance and be aware of the truck's movements at all times.