30 multiple-choice questions for the forklift (powered industrial truck) operator written test. Pick an answer to see the rule behind it, quoted from the official source.
1. When a powered industrial truck is left unattended, what specific actions must the operator take regarding the load engaging means and controls?
Answer: Fully lower the load engaging means, neutralize the controls, shut off the power, and set the brakes. The rule requires fully lowering the load, neutralizing controls, shutting off power, and setting brakes when the truck is unattended.
29 CFR § 1910.178(m): “When a powered industrial truck is left unattended, load engaging means shall be fully lowered, controls shall be neutralized, power shall be shut off, and brakes set.”
2. What is the primary purpose of the overhead guard on a powered industrial truck?
Answer: To offer protection from the impact of small packages, boxes, bagged material, etc. The rule clarifies that the guard protects against small falling items but is not designed to withstand heavy capacity loads.
29 CFR § 1910.178(m): “It should be noted that an overhead guard is intended to offer protection from the impact of small packages, boxes, bagged material, etc., representative of the job application, but not to withstand the impact of a falling capacity load.”
3. What is the definition of 'load center' in the context of forklift stability?
Answer: The horizontal distance from the load's edge to the line of action through the load's center of gravity. Load center is specifically defined as the horizontal measurement from the load edge to its center of gravity line.
29 CFR, Appendix A-1: “Load center is the horizontal distance from the load's edge (or the fork's or other attachment's vertical face) to the line of action through the load's center of gravity.”
4. In a location where combustible dust is suspended in the air in quantities sufficient to produce explosive mixtures, which type of approved power-operated industrial truck must be used?
Answer: Only a truck designated as EX. The regulation specifically mandates the use of EX designated trucks for atmospheres with suspended combustible dust that could create explosive mixtures.
29 CFR § 1910.178(c): “Only approved power operated industrial trucks designated as EX shall be used in atmospheres in which combustible dust is or may be in suspension continuously, intermittently, or periodically under normal operating conditions, in quantities sufficient to produce explosive or ignitable mixtures”
5. Where should an operator look to determine the maximum allowable weight for a specific load center?
Answer: On the data plate of the vehicle. The rule instructs operators to check the vehicle's data plate to find the maximum allowable weight corresponding to the rated load center.
29 CFR, Appendix A-5: “To safely operate the vehicle, the operator should always check the data plate to determine the maximum allowable weight at the rated load center.”
6. If a forklift operator notices that the water level in a water muffler has dropped below 75 percent of its filled capacity, what action is required?
Answer: Fill the muffler daily or as frequently as necessary to maintain the level. The standard mandates that water mufflers be filled regularly to ensure the water level does not fall below the specified 75 percent threshold.
29 CFR § 1910.178(q): “Water mufflers shall be filled daily or as frequently as is necessary to prevent depletion of the supply of water below 75 percent of the filled capacity.”
7. You are operating a forklift in an area classified as having hazardous concentrations of metal dust, such as aluminum or magnesium. Which type of truck is permitted for use in this specific atmosphere?
Answer: An approved power-operated industrial truck designated as EX. The regulation restricts general trucks in metal dust atmospheres, allowing only those specifically designated as EX.
29 CFR § 1910.178(c): “Power-operated industrial trucks shall not be used in atmospheres containing hazardous concentrations of metal dust, including aluminum, magnesium, and their commercial alloys, other metals of similarly hazardous characteristics, or in atmospheres containing carbon black, coal or coke dust except approved power-operated industrial trucks designated as EX may be used in such atmospheres.”
8. In a location used for the storage of hazardous liquids in sealed containers, which specific truck designations are permitted for use?
Answer: DS, ES, GS, or LPS. The rule specifically lists DS, ES, GS, or LPS as the approved designations for locations storing hazardous liquids in sealed containers.
29 CFR § 1910.178(c): “In locations used for the storage of hazardous liquids in sealed containers or liquefied or compressed gases in containers, approved power-operated industrial trucks designated as DS, ES, GS, or LPS may be used.”
9. According to the standard, under which specific condition is a powered industrial truck considered 'unattended'?
Answer: When the operator is 25 feet or more away from the vehicle which remains in their view, or whenever the operator leaves the vehicle and it is not in their view. The regulation defines 'unattended' based on distance and visibility, specifically citing the 25-foot threshold or lack of visibility.
29 CFR § 1910.178(m): “A powered industrial truck is unattended when the operator is 25 ft. or more away from the vehicle which remains in his view, or whenever the operator leaves the vehicle and it is not in his view.”
10. When charging a battery, what is the correct procedure for mixing electrolyte?
Answer: Pour acid into water. The regulation states that acid must be poured into water, not the reverse.
29 CFR § 1910.178(g): “When charging batteries, acid shall be poured into water; water shall not be poured into acid.”
11. What is a required component of the initial training regarding the vehicle itself?
Answer: Differences between the truck and the automobile. The regulation requires training on the differences between the powered industrial truck and an automobile.
12. Around which axis does a powered industrial truck rotate when it tips forward?
Answer: The front wheels' points of contact with the pavement. The rule identifies the contact points of the front wheels as the pivot axis for forward tipping.
29 CFR, Appendix A-5: “The axis of rotation when a truck tips forward is the front wheels' points of contact with the pavement.”
13. Under what condition is additional training in a specific topic not required for an operator who has previously received training?
Answer: If the previous training is appropriate to the truck and working conditions, and the operator has been evaluated and found competent. The rule allows for skipping redundant training only if the prior training matches current conditions and a formal evaluation confirms competence.
29 CFR § 1910.178(l): “If an operator has previously received training in a topic specified in paragraph (l)(3) of this section, and such training is appropriate to the truck and working conditions encountered, additional training in that topic is not required if the operator has been evaluated and found competent to operate the truck safely.”
14. When an operator dismounts a powered industrial truck and remains within 25 feet of the vehicle while keeping it in their view, what specific actions must be taken before leaving the immediate vicinity?
Answer: The load engaging means shall be fully lowered, controls neutralized, and the brakes set to prevent movement. The regulation specifies that even when close enough to see the truck, the operator must lower the forks, neutralize controls, and set brakes to ensure stability.
29 CFR § 1910.178(m): “When the operator of an industrial truck is dismounted and within 25 ft. of the truck still in his view, the load engaging means shall be fully lowered, controls neutralized, and the brakes set to prevent movement.”
15. An operator notices that the capacity plate on their forklift is faded and difficult to read during a shift. What is the operator's responsibility regarding this marking?
Answer: Ensure the nameplates and markings are maintained in a legible condition. The standard requires the user to ensure that all identification markings remain present and readable.
29 CFR § 1910.178(a): “The user shall see that all nameplates and markings are in place and are maintained in a legible condition.”
16. In locations where easily ignitable fibers are stored or handled but are not likely to be in suspension in the air, which truck designations are permitted?
Answer: Only DS, DY, ES, EE, EX, GS, or LPS. The rule lists specific designations (DS, DY, ES, EE, EX, GS, LPS) that are approved for locations storing easily ignitable fibers.
29 CFR § 1910.178(c): “Only approved power-operated industrial trucks designated as DS, DY, ES, EE, EX, GS, or LPS shall be used in locations where easily ignitable fibers are stored or handled, including outside storage, but are not being processed or manufactured.”
17. When checking the electrolyte level in a storage battery or the gasoline level in a fuel tank, what lighting source should an operator use?
Answer: Use a flashlight or other non-combustible light source. The regulation prohibits the use of open flames for checking fluid levels, implying the use of safe, non-combustible alternatives like flashlights.
29 CFR § 1910.178(p): “Open flames shall not be used for checking electrolyte level in storage batteries or gasoline level in fuel tanks.”
18. How frequently must an industrial truck be examined before being placed in service?
Answer: At least daily. Operators are required to inspect the truck at least once every day before use to ensure it is safe.
19. How many points of support form the stability triangle for almost all counterbalanced powered industrial trucks?
Answer: Three points. The rule defines the stability triangle as being formed by a three-point suspension system, even if the vehicle has four wheels.
29 CFR, Appendix A-4: “Almost all counterbalanced powered industrial trucks have a three-point suspension system, that is, the vehicle is supported at three points.”
20. What is the required action when approaching and entering an elevator with a powered industrial truck?
Answer: Approach slowly, enter squarely after leveling, neutralize controls, shut off power, and set brakes. The rule specifies a precise sequence: slow approach, square entry after leveling, and securing the truck by neutralizing controls, shutting off power, and setting brakes.
29 CFR § 1910.178(n): “Elevators shall be approached slowly, and then entered squarely after the elevator car is properly leveled. Once on the elevator, the controls shall be neutralized, power shut off, and the brakes set.”
21. Before attempting to change or charge batteries, what must be done with the truck?
Answer: The truck must be positioned and the brake applied. Operators must ensure the truck is properly positioned and the brake is applied before servicing the battery.
29 CFR § 1910.178(g): “Trucks shall be properly positioned and brake applied before attempting to change or charge batteries.”
22. An operator is modifying a forklift by adding a non-standard attachment that changes the machine's capacity and safe operation. According to the standard, who must provide prior written approval for this modification?
Answer: The manufacturer of the truck. The regulation states that the manufacturer must give prior written approval for modifications affecting capacity and safe operation.
29 CFR § 1910.178(a): “Modifications and additions which affect capacity and safe operation shall not be performed by the customer or user without manufacturers prior written approval.”
23. If a storage warehouse is not classified as hazardous, what type of approved power-operated industrial truck may be used?
Answer: Any approved truck designated as Type D, E, G, or LP. For non-hazardous storage warehouses, the standard allows the use of any approved truck designated as Type D, E, G, or LP.
29 CFR § 1910.178(c): “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.”
24. When operating a forklift in an area where general lighting is less than 2 lumens per square foot, what action must the operator take?
Answer: Provide auxiliary directional lighting on the truck. The regulation requires auxiliary directional lighting when ambient light levels fall below the specified threshold.
29 CFR § 1910.178(h): “Where general lighting is less than 2 lumens per square foot, auxiliary directional lighting shall be provided on the truck.”
25. When cleaning a powered industrial truck, which type of solvent is permitted for use?
Answer: Solvents with a flash point at or above 100 °F. The regulation distinguishes solvents by flash point, prohibiting those below 100 °F and allowing those at or above that temperature.
29 CFR § 1910.178(q): “Low flash point (below 100 °F.) solvents shall not be used. High flash point (at or above 100 °F.) solvents may be used.”
26. Which combination of components is required for a complete powered industrial truck operator training program?
Answer: Formal instruction, practical training, and evaluation of the operator's performance in the workplace. The standard mandates a three-part structure including formal instruction, hands-on practical training, and a workplace performance evaluation.
29 CFR § 1910.178(l): “Training shall consist of a combination of formal instruction (e.g., lecture, discussion, interactive computer learning, video tape, written material), practical training (demonstrations performed by the trainer and practical exercises performed by the trainee), and evaluation of the operator's performance in the workplace.”
27. How should a forklift operator cross railroad tracks whenever possible?
Answer: Cross the tracks diagonally. Crossing diagonally helps prevent the wheels from getting caught in the flanges of the rails, ensuring a smoother and safer crossing.
29. What happens to the truck's steering control if the load moment slightly exceeds the vehicle moment?
Answer: The truck begins to tip forward, causing the rear to lose contact with the ground and resulting in loss of steering control. The rule states that when the load moment exceeds the vehicle moment, the truck tips forward, lifting the rear wheels and causing a loss of steering control.
29 CFR, Appendix A-5: “On the other hand, if the load moment slightly exceeds the vehicle-moment, the truck will begin to tip forward, thereby causing the rear to lose contact with the floor or ground and resulting in loss of steering control.”
30. When ascending or descending a grade in excess of 10 percent with a loaded truck, how should the truck be positioned?
Answer: Drive with the load upgrade. The standard requires the load to be uphill (upgrade) to maintain stability and prevent tipping on steep grades.
29 CFR § 1910.178(n): “When ascending or descending grades in excess of 10 percent, loaded trucks shall be driven with the load upgrade.”