When is it acceptable to drive a fire apparatus over a downed powerline?

• A. Never
• B. Only if the line is de-energized
• C. Always
• D. If you have clearance

Answer: (A)

Power lines on the ground are a critical electrocution hazard. Driving over them can energize the entire apparatus through the tires and chassis, creating a path for electricity to travel to the ground and potentially arc to fuel, water, or nearby objects. Tires are not a guaranteed shield against high voltage, and the line could be re-energized or still energized due to faults or other conditions, even if it appears to be out of service. Because of this unpredictable danger, the safest approach is to stop, keep everyone away, and wait for the utility to secure and verify the line is safe to approach. Do not attempt to cross or maneuver over the line; re-route or reposition as directed by incident command and utility personnel. In short, never drive over a downed powerline.