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Forklift fuel, batteries, lighting and loading docks practice questions

20 free practice questions from 29 CFR 1910.178(f) to (k). Each answer is explained and linked to the rule it comes from.

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Forklift fuel, batteries, lighting and loading docks

20 questions across 5 topics. After each answer you see why it is right, with a link to the official source.

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Fuel handling and storage

  1. 1. A plant stores diesel fuel for its trucks. Under 1910.178(f)(1), the storage and handling shall be in accordance with which code?

    • A. NFPA Storage and Handling of Liquefied Petroleum Gases (NFPA No. 58-1969)
    • B. NFPA Flammable and Combustible Liquids Code (NFPA No. 30-1969)
    • C. The levels specified in § 1910.1000
    • D. Subpart D of this part
    Show answer

    Answer: B. NFPA Flammable and Combustible Liquids Code (NFPA No. 30-1969)

    1910.178(f)(1) says "The storage and handling of liquid fuels such as gasoline and diesel fuel shall be in accordance with NFPA Flammable and Combustible Liquids Code (NFPA No. 30-1969)".

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  2. 2. Under 1910.178(f)(2), the storage and handling of which fuel shall be in accordance with NFPA No. 58-1969?

    • A. Gasoline
    • B. Diesel fuel
    • C. Battery electrolyte
    • D. Liquefied petroleum gas fuel
    Show answer

    Answer: D. Liquefied petroleum gas fuel

    1910.178(f)(2) says "The storage and handling of liquefied petroleum gas fuel shall be in accordance with NFPA Storage and Handling of Liquefied Petroleum Gases (NFPA No. 58-1969)".

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

Battery charging areas

  1. 3. A plant wants to put a new battery charger in a corner of its shipping floor that has not been set aside for charging. What does 1910.178(g)(1) say about battery charging installations?

    • A. They shall be located in areas designated for that purpose
    • B. They may be located anywhere a fire extinguisher is nearby
    • C. They shall be located outdoors only
    • D. They shall be located next to the liquid fuel storage area
    Show answer

    Answer: A. They shall be located in areas designated for that purpose

    1910.178(g)(1) says "Battery charging installations shall be located in areas designated for that purpose."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  2. 4. Electrolyte spills on the floor of a battery charging installation. Which facility does 1910.178(g)(2) say shall be provided for that situation?

    • A. A floor drain leading to the storm sewer
    • B. A fan to dry the floor
    • C. Facilities for flushing and neutralizing spilled electrolyte
    • D. An open bin of sawdust beside each charger
    Show answer

    Answer: C. Facilities for flushing and neutralizing spilled electrolyte

    1910.178(g)(2) says "Facilities shall be provided for flushing and neutralizing spilled electrolyte", along with the other facilities it lists.

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  3. 5. A battery charging area sits beside a busy truck aisle. Which facility listed in 1910.178(g)(2) deals with the trucks themselves?

    • A. A posted speed limit for the aisle
    • B. Convex mirrors at each corner of the area
    • C. Facilities for protecting charging apparatus from damage by trucks
    • D. A traffic signal at the area's entrance
    Show answer

    Answer: C. Facilities for protecting charging apparatus from damage by trucks

    1910.178(g)(2) says facilities shall be provided "for protecting charging apparatus from damage by trucks", along with the other facilities it lists.

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  4. 6. A plant sets up a battery charging installation with facilities for flushing and neutralizing spilled electrolyte, barriers that protect the chargers from trucks, and ventilation for battery fumes. It decides fire protection is unnecessary because no fuel is stored nearby. What does 1910.178(g)(2) say?

    • A. Facilities for fire protection shall be provided as well
    • B. The plant is right; fire protection is needed only where fuel is stored
    • C. Fire protection is needed only if batteries are charged overnight
    • D. Fire protection is needed only if more than one charger is installed
    Show answer

    Answer: A. Facilities for fire protection shall be provided as well

    1910.178(g)(2) says "Facilities shall be provided for flushing and neutralizing spilled electrolyte, for fire protection, for protecting charging apparatus from damage by trucks, and for adequate ventilation for dispersal of fumes from gassing batteries." It sets no condition on the fire protection facilities.

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  5. 7. A maintenance worker plans to cut a steel bracket with an angle grinder, which throws sparks, inside a battery charging area. What does 1910.178(g)(11) require?

    • A. Nothing, because the rule covers only smoking
    • B. Nothing, as long as the battery covers are closed
    • C. Nothing, once the area's ventilation is switched on
    • D. Precautions shall be taken to prevent sparks in the battery charging area
    Show answer

    Answer: D. Precautions shall be taken to prevent sparks in the battery charging area

    1910.178(g)(11) says "Precautions shall be taken to prevent open flames, sparks, or electric arcs in battery charging areas." Sparks from a grinder fall under that requirement.

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

Changing, charging and handling batteries

  1. 8. A mechanic is working near a battery whose top is uncovered. What does 1910.178(g)(12) say about tools and other metallic objects?

    • A. They shall be wrapped in insulating tape
    • B. They shall be kept away from the top of uncovered batteries
    • C. They shall be grounded before use
    • D. They shall be stored in a locked cabinet inside the charging area
    Show answer

    Answer: B. They shall be kept away from the top of uncovered batteries

    1910.178(g)(12) says "Tools and other metallic objects shall be kept away from the top of uncovered batteries."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  2. 9. What does 1910.178(g)(4) say shall be provided for handling batteries?

    • A. A conveyor, overhead hoist, or equivalent material handling equipment
    • B. A carboy tilter or siphon
    • C. Two employees for every battery lift
    • D. Lifting straps worn by the employee
    Show answer

    Answer: A. A conveyor, overhead hoist, or equivalent material handling equipment

    1910.178(g)(4) says "A conveyor, overhead hoist, or equivalent material handling equipment shall be provided for handling batteries."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  3. 10. Which equipment does 1910.178(g)(6) say shall be provided for handling electrolyte?

    • A. An overhead hoist
    • B. A pressurized spray nozzle
    • C. A carboy tilter or siphon
    • D. An open bucket and funnel
    Show answer

    Answer: C. A carboy tilter or siphon

    1910.178(g)(6) says "A carboy tilter or siphon shall be provided for handling electrolyte."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  4. 11. 1910.178(g)(7) sets the order in which acid and water are combined. During which activity does it apply?

    • A. When cleaning trucks
    • B. When charging batteries
    • C. When filling water mufflers
    • D. When disposing of a used battery
    Show answer

    Answer: B. When charging batteries

    1910.178(g)(7) says "When charging batteries, acid shall be poured into water; water shall not be poured into acid."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  5. 12. A battery that was taken out is being put back into the truck. What does 1910.178(g)(5) require?

    • A. It shall be fully charged before it is reinstalled
    • B. It shall be reinstalled with its cover closed and locked
    • C. It shall be reinstalled only by a licensed electrician
    • D. It shall be properly positioned and secured in the truck
    Show answer

    Answer: D. It shall be properly positioned and secured in the truck

    1910.178(g)(5) says "Reinstalled batteries shall be properly positioned and secured in the truck."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  6. 13. What does 1910.178(g)(9) say about the battery (or compartment) cover(s)?

    • A. They shall be closed to keep out sparks
    • B. They shall be removed and stored outside the charging area
    • C. They shall be locked during charging
    • D. They shall be open to dissipate heat
    Show answer

    Answer: D. They shall be open to dissipate heat

    1910.178(g)(9) says "The battery (or compartment) cover(s) shall be open to dissipate heat."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  7. 14. Under 1910.178(g)(9), care shall be taken to assure what about vent caps?

    • A. That they are functioning
    • B. That they are removed before charging
    • C. That they are sealed with tape
    • D. That they are replaced at every battery change
    Show answer

    Answer: A. That they are functioning

    1910.178(g)(9) says "Care shall be taken to assure that vent caps are functioning."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

Lighting, gases and dockboards

  1. 15. In an operating area, general lighting is less than 2 lumens per square foot. What does 1910.178(h)(2) require?

    • A. Truck operation shall stop until the lighting is improved
    • B. The operator shall travel in reverse
    • C. Auxiliary directional lighting shall be provided on the truck
    • D. A second employee shall walk ahead with a flashlight
    Show answer

    Answer: C. Auxiliary directional lighting shall be provided on the truck

    1910.178(h)(2) says "Where general lighting is less than 2 lumens per square foot, auxiliary directional lighting shall be provided on the truck."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  2. 16. Gasoline trucks work inside a closed warehouse and carbon monoxide builds up in the air. Under 1910.178(i)(1), what sets the limit for the carbon monoxide concentration created by the truck operations?

    • A. A level chosen by the truck manufacturer
    • B. The levels specified in § 1910.1000
    • C. No limit applies as long as one door is kept open
    • D. Whatever level the operators report they can tolerate
    Show answer

    Answer: B. The levels specified in § 1910.1000

    1910.178(i)(1) says "Concentration levels of carbon monoxide gas created by powered industrial truck operations shall not exceed the levels specified in § 1910.1000."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  3. 17. A warehouse runs propane and diesel trucks indoors. Which carbon monoxide does the limit in 1910.178(i)(1) cover?

    • A. Carbon monoxide gas created by powered industrial truck operations
    • B. Only carbon monoxide from diesel-powered trucks
    • C. Only carbon monoxide given off while trucks are being refueled
    • D. Only carbon monoxide from the building's heating system
    Show answer

    Answer: A. Carbon monoxide gas created by powered industrial truck operations

    1910.178(i)(1) reads: "Concentration levels of carbon monoxide gas created by powered industrial truck operations shall not exceed the levels specified in § 1910.1000." The rule does not limit this to one fuel type.

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

Highway trucks, semitrailers and railroad cars

  1. 18. Under 1910.178(k)(1), a highway truck's brakes are set and wheel chocks are placed under its rear wheels to keep it from rolling during which activity?

    • A. While its driver rests in the cab
    • B. While it is being fueled
    • C. While it travels on public roads
    • D. While it is boarded with powered industrial trucks
    Show answer

    Answer: D. While it is boarded with powered industrial trucks

    1910.178(k)(1) says "The brakes of highway trucks shall be set and wheel chocks placed under the rear wheels to prevent the trucks from rolling while they are boarded with powered industrial trucks."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  2. 19. A railroad car is being loaded at a siding that has no wheel stops. Which alternative to wheel stops does 1910.178(k)(2) name for preventing the car from moving during the loading?

    • A. A worker who watches the car
    • B. A painted stop line on the rail
    • C. Other recognized positive protection
    • D. A warning sign on the car
    Show answer

    Answer: C. Other recognized positive protection

    1910.178(k)(2) says "Wheel stops or other recognized positive protection shall be provided to prevent railroad cars from moving during loading or unloading operations."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)

  3. 20. 1910.178(k)(3) says fixed jacks may be necessary to support a semitrailer. Which hazard does it name them as preventing?

    • A. The trailer's tires going flat
    • B. Upending during the loading or unloading
    • C. The dockboard sliding off the trailer
    • D. Theft of the trailer
    Show answer

    Answer: B. Upending during the loading or unloading

    1910.178(k)(3) says "Fixed jacks may be necessary to support a semitrailer and prevent upending during the loading or unloading when the trailer is not coupled to a tractor."

    Source: eCFR: 29 CFR 1910.178, Powered industrial trucks (as of Nov 4, 2026)