The areas around a truck where other vehicles may disappear into blind spots are known as:

The correct term for the areas around a truck where other vehicles may disappear from the driver's view is "no-zones." This term is widely used to describe the dangerous areas around large trucks where the driver's visibility is limited. No-zones typically include the front, rear, and sides of the truck, particularly on the right side where the driver's view is most obstructed. Understanding where these no-zones are is crucial for smaller vehicles to avoid driving in these blind spots, as it significantly increases the risk of accidents.

The other options, while they may describe aspects of driving safety, do not accurately define the specific areas around trucks that pose visibility challenges. "Blind spots" is a more general term used for any area around a vehicle that cannot be seen by the driver, not specifically related to trucks. "Danger zones" and "safety zones" are also not specific terms used to describe the blind areas around trucks and do not capture the same meaning as no-zones. Recognizing these no-zones and the inherent risk they pose helps promote safer driving habits for both truck drivers and those in smaller vehicles.