A truck has stopped on the highway. Which of the following is considered an unsafe way to determine what the truck is carrying?

Inspecting the contents of the truck is considered an unsafe method because it often involves directly approaching the vehicle, which could put you in danger, especially if the truck is on the highway. The area around a stopped vehicle can present various risks, such as traffic or hazards related to the contents of the truck, especially if they are hazardous materials.

In contrast, asking the driver directly is typically the safest approach, as you are communicating with the person responsible for the vehicle and its contents. Observing any labels or markings on the outside of the truck is also a safe practice, as these indicators can provide important information about what is being transported without needing to get close to the truck. Using binoculars from a distance offers another safe alternative, allowing you to gather information without risking your safety by approaching the truck closely.