All ignition sources must be at least ____ feet from the motor fuel dispenser.

• A. 10
• B. 25
• C. 50
• D. 100

Answer: (B)

Fuel vapors around a motor fuel dispenser pose a real ignition hazard, so creating a safe clearance around the dispenser helps prevent sparks, flames, or hot surfaces from igniting those vapors. Gasoline vapors can travel and accumulate near the ground, and a 25-foot buffer gives enough space for vapors to dilute and for any ignition source nearby—like electrical equipment, vehicles, or heaters—not to reach a flammable cloud. That distance is chosen as a standard safety measure to balance protection with practical station design. A shorter distance, such as ten feet, would still risk ignition, while much larger distances would be unnecessarily restrictive for operations and layout, even though they would be safer.