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Forklift truck approval, types and designated locations practice questions

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

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Forklift truck approval, types and designated locations

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Scope, new trucks and approval

  1. 1. Under 1910.178(a)(2), which powered industrial trucks shall meet the design and construction requirements of ANSI B56.1-1969 (Part II)?

    • A. Only trucks that will be used outdoors
    • B. All new powered industrial trucks acquired and used by an employer, except vehicles intended primarily for earth moving or over-the-road hauling
    • C. Only trucks operated on more than one shift a day
    • D. Only used trucks bought from a dealer
    Show answer

    Answer: B. All new powered industrial trucks acquired and used by an employer, except vehicles intended primarily for earth moving or over-the-road hauling

    "All new powered industrial trucks acquired and used by an employer shall meet the design and construction requirements for powered industrial trucks established in the" ANSI B56.1-1969 standard, "except for vehicles intended primarily for earth moving or over-the-road hauling."

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

  2. 2. How does 1910.178(a)(3) say an approved truck shows that the testing laboratory approved it?

    • A. With a letter kept in the employer's files
    • B. With a sticker the employer prints after operator training
    • C. Only through the dealer's sales invoice
    • D. By bearing a label or some other identifying mark indicating approval by the testing laboratory
    Show answer

    Answer: D. By bearing a label or some other identifying mark indicating approval by the testing laboratory

    "Approved trucks shall bear a label or some other identifying mark indicating approval by the testing laboratory."

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

Modifications and markings

  1. 3. 1910.178(a)(5) tells the user to request that a truck be marked to identify its attachments and show the approximate weight of the truck and attachment combination. Which attachments does that paragraph cover?

    • A. Front-end attachments other than factory installed attachments
    • B. Only factory installed front-end attachments
    • C. Only attachments mounted at the rear of the truck
    • D. Only attachments that weigh more than the truck itself
    Show answer

    Answer: A. Front-end attachments other than factory installed attachments

    Paragraph (a)(5) applies "If the truck is equipped with front-end attachments other than factory installed attachments"; then "the user shall request that the truck be marked to identify the attachments".

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

  2. 4. After an approved modification that affects capacity and safe operation, what does 1910.178(a)(4) say shall be changed accordingly?

    • A. The truck's designation letters
    • B. The dates on each operator's certification
    • C. Capacity, operation, and maintenance instruction plates, tags, or decals
    • D. The hazard classification of the location where the truck works
    Show answer

    Answer: C. Capacity, operation, and maintenance instruction plates, tags, or decals

    "Capacity, operation, and maintenance instruction plates, tags, or decals shall be changed accordingly."

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

Truck designations

  1. 5. How does 1910.178(b)(1) say a D designated unit differs from a G unit?

    • A. It is diesel engine powered instead of gasoline engine powered
    • B. It has no electrical equipment, including the ignition
    • C. It has additional safeguards to the exhaust, fuel and electrical systems
    • D. It uses liquefied petroleum gas for fuel
    Show answer

    Answer: A. It is diesel engine powered instead of gasoline engine powered

    "The D designated units are units similar to the G units except that they are diesel engine powered instead of gasoline engine powered."

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

  2. 6. A diesel powered unit has all the safeguards of the DS units, has no electrical equipment including the ignition, and is equipped with temperature limitation features. Which designation is it?

    • A. D
    • B. DS
    • C. DY
    • D. GS
    Show answer

    Answer: C. DY

    "The DY designated units are diesel powered units that have all the safeguards of the DS units and in addition do not have any electrical equipment including the ignition and are equipped with temperature limitation features."

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

  3. 7. What sets the EX designated units apart from the E, ES, or EE units under 1910.178(b)(7)?

    • A. They are diesel powered and have no ignition system
    • B. Their electrical fittings and equipment are so designed, constructed and assembled that the units may be used in certain atmospheres containing flammable vapors or dusts
    • C. They are gasoline powered with minimum acceptable safeguards against inherent fire hazards
    • D. They use liquefied petroleum gas for fuel instead of gasoline
    Show answer

    Answer: B. Their electrical fittings and equipment are so designed, constructed and assembled that the units may be used in certain atmospheres containing flammable vapors or dusts

    EX units "differ from the E, ES, or EE units in that the electrical fittings and equipment are so designed, constructed and assembled that the units may be used in certain atmospheres containing flammable vapors or dusts."

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

  4. 8. An electrically powered unit has, in addition to all of the requirements for the E and ES units, the electric motors and all other electrical equipment completely enclosed. Which designation is it?

    • A. E
    • B. ES
    • C. LPS
    • D. EE
    Show answer

    Answer: D. EE

    "The EE designated units are electrically powered units that have, in addition to all of the requirements for the E and ES units, the electric motors and all other electrical equipment completely enclosed."

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

Classifying locations

  1. 9. Under 1910.178(b)(12), what shall have been done before industrial trucks are considered for use in an atmosphere or location?

    • A. Every truck in the fleet shall have been converted to LP-gas
    • B. Travel lanes shall have been painted on the floor
    • C. The atmosphere or location shall have been classified as to whether it is hazardous or nonhazardous
    • D. Positive-pressure ventilation shall have been installed in the location
    Show answer

    Answer: C. The atmosphere or location shall have been classified as to whether it is hazardous or nonhazardous

    "The atmosphere or location shall have been classified as to whether it is hazardous or nonhazardous prior to the consideration of industrial trucks being used therein".

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

  2. 10. The trucks specified for each location in 1910.178(c)(2) are the minimum types required. What does 1910.178(c)(1) say about a truck having greater safeguards?

    • A. Industrial trucks having greater safeguards may be used if desired
    • B. Only the exact type listed for the location may be used
    • C. A truck with greater safeguards needs OSHA's written permission
    • D. Trucks with greater safeguards may be used only in unclassified locations
    Show answer

    Answer: A. Industrial trucks having greater safeguards may be used if desired

    "The industrial trucks specified under subparagraph (2) of this paragraph are the minimum types required but industrial trucks having greater safeguards may be used if desired."

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

Flammable gases and vapors

  1. 11. An atmosphere contains a hazardous concentration of hydrogen. Which power-operated industrial truck does 1910.178(c)(2)(i) allow there?

    • A. An approved truck designated as EX
    • B. A truck designated as DY
    • C. A truck designated as LPS
    • D. None; power-operated industrial trucks shall not be used in such atmospheres
    Show answer

    Answer: D. None; power-operated industrial trucks shall not be used in such atmospheres

    Paragraph (c)(2)(i) states: "Power-operated industrial trucks shall not be used in atmospheres containing hazardous concentration of acetylene, butadiene, ethylene oxide, hydrogen"; it names no designation that may be used there.

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

  2. 12. Gasoline vapors in quantities sufficient to produce explosive or ignitable mixtures exist intermittently under normal operating conditions. Which trucks does 1910.178(c)(2)(iii) permit there?

    • A. Any approved truck designated as Type D, E, G, or LP
    • B. Only approved power-operated industrial trucks designated as EX
    • C. Approved trucks designated as DS, ES, GS, or LPS
    • D. Gasoline powered G trucks only
    Show answer

    Answer: B. Only approved power-operated industrial trucks designated as EX

    "Only approved power-operated industrial trucks designated as EX may be used" in atmospheres containing gasoline and the other listed gases or vapors where such concentrations "exist continuously, intermittently or periodically under normal operating conditions".

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

  3. 13. 1910.178(c)(2)(iv) includes locations adjacent to Class I, Division 1 locations to which hazardous concentrations of gases or vapors might occasionally be communicated. Which "unless" condition does it state?

    • A. Unless such communication is prevented by adequate positive-pressure ventilation from a source of clear air, and effective safeguards against ventilation failure are provided
    • B. Unless the adjacent location is used only on weekends
    • C. Unless every truck there is fitted with an overhead guard
    • D. Unless a fire extinguisher is mounted on each truck
    Show answer

    Answer: A. Unless such communication is prevented by adequate positive-pressure ventilation from a source of clear air, and effective safeguards against ventilation failure are provided

    Such locations are ones "to which hazardous concentrations of gases or vapors might occasionally be communicated unless such communication is prevented by adequate positive-pressure ventilation from a source of clear air, and effective safeguards against ventilation failure are provided."

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

  4. 14. Under 1910.178(c)(2)(v), locations used for the storage of hazardous liquids or of liquified or compressed gases in sealed containers would not normally be considered hazardous unless what?

    • A. Unless the containers are stacked more than two high
    • B. Unless subject to other hazardous conditions also
    • C. Unless the storage is outdoors
    • D. Unless the containers are made of metal
    Show answer

    Answer: B. Unless subject to other hazardous conditions also

    "Locations used for the storage of hazardous liquids or of liquified or compressed gases in sealed containers would not normally be considered hazardous unless subject to other hazardous conditions also."

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

Combustible dust and fibers

  1. 15. In atmospheres where dust of magnesium, aluminum or aluminum bronze may be present, what does 1910.178(c)(2)(ii)(b) require for a truck's fuses, switches, motor controllers, and circuit breakers?

    • A. Removal from the truck before it enters the area
    • B. A coat of nonconductive paint
    • C. Replacement after each shift in the area
    • D. Enclosures specifically approved for such locations
    Show answer

    Answer: D. Enclosures specifically approved for such locations

    "In atmospheres where dust of magnesium, aluminum or aluminum bronze may be present, fuses, switches, motor controllers, and circuit breakers of trucks shall have enclosures specifically approved for such locations."

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

  2. 16. Which area does 1910.178(c)(2)(vi)(b) name as usually included in the EX classification?

    • A. All-metal dust and stock collectors vented to the outside
    • B. Coal pulverizing plants where the pulverizing equipment is essentially dust tight
    • C. The working areas of grain handling and storage plants
    • D. Areas where metal powders are stored in tight containers
    Show answer

    Answer: C. The working areas of grain handling and storage plants

    "The EX classification usually includes the working areas of grain handling and storage plants". The paragraph excepts "all-metal collectors vented to the outside", coal pulverizing plants "where the pulverizing equipment is essentially dust tight" and metal dusts and powders stored "in tight containers".

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

  3. 17. A truck designated as E has been used in a location where easily ignitable fibers are stored, but not processed or manufactured. What does 1910.178(c)(2)(ix) say about that truck?

    • A. It shall be replaced with an EX truck at once
    • B. It shall be converted to LP-gas fuel
    • C. It may be used only outside the storage area
    • D. It may be continued in use
    Show answer

    Answer: D. It may be continued in use

    In those locations, "Industrial trucks designated as E, which have been previously used in these locations may be continued in use."

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

Piers, storage and general properties

  1. 18. A storage warehouse is not classified as hazardous. Which statement matches what 1910.178(c)(2)(xi) says may be used there?

    • A. Any approved power-operated industrial truck designated as Type D, E, G, or LP, or trucks which conform to the requirements for these types
    • B. Approved EX trucks and no other type
    • C. DY, EE, or EX trucks and no other type
    • D. No power-operated industrial truck of any type
    Show answer

    Answer: A. Any approved power-operated industrial truck designated as Type D, E, G, or LP, or trucks which conform to the requirements for these types

    "If not classified as hazardous, any approved power-operated industrial truck designated as Type D, E, G, or LP may be used, or trucks which conform to the requirements for these types may be used."

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

Converted trucks and safety guards

  1. 19. A truck originally approved for gasoline fuel is converted to liquefied petroleum gas fuel in accordance with paragraph (q). Where does 1910.178(d) say it may be used?

    • A. Only where EX trucks are specified
    • B. Only on piers and wharves handling general cargo
    • C. In those locations where G, GS or LP, and LPS designated trucks have been specified
    • D. Nowhere, because a converted truck loses its approval
    Show answer

    Answer: C. In those locations where G, GS or LP, and LPS designated trucks have been specified

    Such trucks, "when converted to the use of liquefied petroleum gas fuel in accordance with paragraph (q) of this section, may be used in those locations where G, GS or LP, and LPS designated trucks have been specified in the preceding paragraphs."

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

  2. 20. Under 1910.178(e)(1), what shall High Lift Rider trucks be fitted with, unless operating conditions do not permit?

    • A. A second operator seat
    • B. An overhead guard manufactured in accordance with paragraph (a)(2)
    • C. A roll-down side curtain
    • D. A rear-view camera
    Show answer

    Answer: B. An overhead guard manufactured in accordance with paragraph (a)(2)

    "High Lift Rider trucks shall be fitted with an overhead guard manufactured in accordance with paragraph (a)(2) of this section, unless operating conditions do not permit."

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