A dump truck operator is involved in a rollover incident. The truck is lying on its side, and the operator is shaken but uninjured. There is a strong smell of diesel fuel. What is the most critical subsequent action after safely exiting the vehicle?

Question: A dump truck operator is involved in a rollover incident. The truck is lying on its side, and the operator is shaken but uninjured. There is a strong smell of diesel fuel. What is the most critical subsequent action after safely exiting the vehicle?

Answer options: ✅ Establish an exclusion zone around the truck and warn others of the fuel spill hazard.

• Attempt to upright the truck using a nearby excavator.
• Begin cleaning up the fuel spill with absorbent materials from the site spill kit.
• Contact the next-of-kin before notifying site management.

Correct answer: Establish an exclusion zone around the truck and warn others of the fuel spill hazard.

Explanation: After exiting a rollover, especially with a fuel leak, establishing an exclusion zone is critical to protect other workers and prevent ignition. This is a primary hazard control measure for spills, as per OHSA and environmental regulations.