Final answer:
Being in a truck's blind spot means the area around the vehicle which the driver cannot see. It is essential for safety to avoid lingering in these spots to prevent collisions. Larger vehicles have more significant blind spots, often at the rear and sides near the rear.
Step-by-step explanation:
If the driver of a large truck or bus cannot see you in his rearview mirrors, you are in the truck's blind spot. The blind spot is an area around the vehicle that the driver cannot observe directly through their mirrors. It is crucial for safety to be aware of these spots when driving or when near large vehicles as a pedestrian, cyclist, or another driver.
To remain safe and avoid a collision, always ensure that you can see the driver in the mirror. If you can see them, they are more likely to be able to see you. Larger vehicles like trucks and buses have larger blind spots, often directly behind them or on the sides near the rear of the vehicle. It is always best to give these vehicles plenty of room and avoid driving or riding in these areas for extended periods.