At a minimum, how many minutes with no smoke or fire should be observed before towing an electric vehicle?

The correct answer is based on safety protocols for handling electric vehicles (EVs) after a collision or fire incident. The recommended minimum observation time without visible smoke or flames is 45 minutes. This duration allows for the possibility of delayed ignition or residual energy release from the vehicle's batteries, which can present a danger if not adequately monitored.

Electric vehicles, due to their lithium-ion battery packs, can experience thermal runaway conditions even after the initial fire has been extinguished. The 45-minute observation window serves as a safety precaution to ensure that no smoldering or hidden fires develop that could result in hazardous situations during transport or recovery of the vehicle.

While shorter observation times might seem reasonable, they do not adequately account for the risk associated with the unique characteristics of electric vehicle batteries. The extended waiting period helps ensure the safety of first responders, tow truck operators, and others who may come into contact with the vehicle after an incident.