What is the appropriate action upon arriving at a scene with an alternative-fuel vehicle leaking an unknown substance?

Upon discovering an alternative-fuel vehicle leaking an unknown substance, the most appropriate action is to call for additional resources and keep bystanders away. The reason this is the correct response is due to the potential dangers posed by both the unknown substance and the alternative fuel source, which could include risks such as flammability, toxicity, or explosion hazards. By ensuring that bystanders are kept at a safe distance, you are protecting both the public and yourself from possible harm.

Additionally, calling for additional resources is essential in this situation. Specialized response teams, such as hazmat units, have the training and equipment necessary to safely identify and manage leaks from alternative-fuel vehicles. This coordinated response helps ensure that the situation is handled appropriately and safely.

Prioritizing the safety of those on the scene and ensuring that experts are involved in the response is crucial in this scenario.