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Ohio hazardous materials: test 3

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Ohio Hazardous materials Test 3

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Question 1 of 16
  1. 1. When applying the Table 2 aggregate gross-weight placarding threshold, does packaging weight count?
  2. 2. Can a bulk package rely on the general less-than-1,001-pound Table 2 placarding exception merely because it contains little material?
  3. 3. A vehicle carries qualifying non-bulk packages from two Table 2 categories requiring different placards. Neither category reaches 2,205 pounds loaded at one facility. Which option may be available?
  4. 4. A qualifying mixed non-bulk load uses DANGEROUS placards. One facility loads 2,300 pounds aggregate gross weight of Class 8 material. What additional category display is required?
  5. 5. For a domestic Class 9 shipment in bulk packaging, what is true even though a CLASS 9 placard is not required?
  6. 6. A required placard is partly hidden behind a ladder. What is the appropriate correction?
  7. 7. How far must a placard be from advertising or other markings that could reduce its effectiveness?
  8. 8. For a tractor and cargo body, may the required front placard be displayed on the front of the truck-tractor?
  9. 9. Hazardous-material packages are not permanently attached to the vehicle. What must their securement prevent during normal transportation?
  10. 10. A package bears required orientation arrows. How must it be carried?
  11. 11. Before loading or unloading hazardous material, what must be done to prevent the vehicle from moving?
  12. 12. A tool could damage a hazardous package's closure during unloading. Should it be used?
  13. 13. A cargo-tank unloading operation uses the ordinary in-person attendance method, with no special exception or alternative system. How close must the qualified person remain?
  14. 14. For ordinary in-person cargo-tank attendance, which person is qualified?
  15. 15. An approved remote cargo-tank monitoring system loses its monitoring capability during transfer. What must happen?
  16. 16. An ordinary hazardous-liquid cargo tank still contains product. One manhole is unsecured. May it be driven a short distance to the exit?
Review all 16 questions with answers

  1. When applying the Table 2 aggregate gross-weight placarding threshold, does packaging weight count?

    Correct answer: Yes; gross weight includes packaging and contents.

    The threshold uses the gross weight of the hazardous packages, not merely net product weight or the vehicle's own weight.

    Source: Ohio Commercial Driver License Manual (HSY 7605 7/26), Section 9.8, Gross weight or gross mass; 172.504(c); physical PDF page 115 (printed 9-19). Section 9 version July 2017; factual safety concept reviewed September 14, 2026. ↗

  2. Can a bulk package rely on the general less-than-1,001-pound Table 2 placarding exception merely because it contains little material?

    Correct answer: No; that exception expressly excludes bulk packagings.

    Bulk-packaging and special subsidiary-hazard rules must be checked separately. The non-bulk aggregate-weight exception is not a general small-residue exemption for tanks.

    Source: 49 CFR 172.504(c), (d). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  3. A vehicle carries qualifying non-bulk packages from two Table 2 categories requiring different placards. Neither category reaches 2,205 pounds loaded at one facility. Which option may be available?

    Correct answer: A DANGEROUS placard instead of their separate Table 2 placards.

    172.504(b) allows the DANGEROUS option for the stated mixed non-bulk Table 2 load. It does not replace Table 1 or other separate requirements.

    Source: 49 CFR 172.504(b). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  4. A qualifying mixed non-bulk load uses DANGEROUS placards. One facility loads 2,300 pounds aggregate gross weight of Class 8 material. What additional category display is required?

    Correct answer: The CORROSIVE placard for that category.

    When at least 2,205 pounds of one Table 2 category is loaded at one facility, its specified category placard must be applied.

    Source: 49 CFR 172.504(b). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  5. For a domestic Class 9 shipment in bulk packaging, what is true even though a CLASS 9 placard is not required?

    Correct answer: The bulk packaging still needs the appropriate identification-number marking.

    The domestic placard exception does not remove bulk identification marking. The number can appear on the authorized Class 9 placard, orange panel or white square-on-point display.

    Source: 49 CFR 172.504(f)(9). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  6. A required placard is partly hidden behind a ladder. What is the appropriate correction?

    Correct answer: Place or display it clear of the obstruction.

    Required placards must meet visibility requirements and be located clear of ladders, pipes, doors and other devices.

    Source: 49 CFR 172.516(a), (c)(2). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  7. How far must a placard be from advertising or other markings that could reduce its effectiveness?

    Correct answer: At least 3 inches.

    172.516(c)(4) requires separation from interfering markings and in any case at least three inches.

    Source: 49 CFR 172.516(c)(4). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  8. For a tractor and cargo body, may the required front placard be displayed on the front of the truck-tractor?

    Correct answer: Yes; it may be there instead of or in addition to the cargo-body front.

    The rule expressly allows the required front display on the tractor. Other applicable placarding and visibility requirements remain.

    Source: 49 CFR 172.516(b). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  9. Hazardous-material packages are not permanently attached to the vehicle. What must their securement prevent during normal transportation?

    Correct answer: Shifting, including movement relative to other packages.

    Packages must be secured against normal transit movement. Loading must also minimize the chance of damage to valves and fittings.

    Source: 49 CFR 177.834(a). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  10. A package bears required orientation arrows. How must it be carried?

    Correct answer: In the indicated orientation throughout transportation.

    Required orientation markings control both loading position and the package's position during transport.

    Source: 49 CFR 177.834(b). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  11. Before loading or unloading hazardous material, what must be done to prevent the vehicle from moving?

    Correct answer: Securely set the parking brake and take other reasonable precautions.

    The rule requires the handbrake to be securely set and other reasonable measures against movement. Hoses and people are not vehicle restraints.

    Source: 49 CFR 177.834(e). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  12. A tool could damage a hazardous package's closure during unloading. Should it be used?

    Correct answer: No; use handling equipment that will not damage containment.

    Tools likely to impair a package or its closure must not be used. The restriction concerns damaging tools, not a blanket ban on handling equipment.

    Source: 49 CFR 177.834(f). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  13. A cargo-tank unloading operation uses the ordinary in-person attendance method, with no special exception or alternative system. How close must the qualified person remain?

    Correct answer: Within 25 feet of the cargo tank.

    The ordinary method requires the qualified person within 25 feet, alert, and with the prescribed unobstructed view to the maximum extent practicable. Authorized alternative methods and product-specific exceptions have their own conditions.

    Source: 49 CFR 177.834(i)(3)(i). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  14. For ordinary in-person cargo-tank attendance, which person is qualified?

    Correct answer: One trained for the hazards and emergencies and able and authorized to move it.

    The attendant must know the material's hazards and emergency procedures and have authority and means to move the tank under this attendance method.

    Source: 49 CFR 177.834(i)(4). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  15. An approved remote cargo-tank monitoring system loses its monitoring capability during transfer. What must happen?

    Correct answer: Terminate transfer immediately and restore compliant attendance.

    The remote-system alternative requires immediate termination on loss of monitoring capability. A qualified person must immediately resume the required in-person attendance after remote-system failure.

    Source: 49 CFR 177.834(i)(3)(ii)(C), (E). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

  16. An ordinary hazardous-liquid cargo tank still contains product. One manhole is unsecured. May it be driven a short distance to the exit?

    Correct answer: No; secure the manhole before moving the tank.

    The cargo-tank rule requires manhole closures closed and secured regardless of the quantity carried, subject to its stated empty-tank exception. A short distance is not itself an exception.

    Source: 49 CFR 177.834(j). Official eCFR XML dated September 10, 2026; reviewed September 14, 2026. ↗

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Question reference: oh-cdl-hazmat-033

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Ohio hazardous materials: test 3

Placard conditions and cargo transfer. 16 questions with immediate explanations. Independent study, not a BMV examination or registered ELDT.

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Study notes: hazardous materials

The H endorsement does not replace hazardous-material employee training or applicable security requirements. Federal rules control the legal scenarios; the older handbook contains superseded reporting and ORM-D language. Cargo, packaging, weight and exceptions matter together. These questions do not authorize handling a spill or fighting a cargo fire.

Read the conditions, not just the number

  • The Table 2 weight exception concerns specified non-bulk packages. Gross package weight includes the package and its contents, not the truck.
  • A qualifying attendant outside a parked vehicle needs both the required distance and an unobstructed view. Sleeping in the berth is not attendance.
  • An incident that directly causes public evacuation for exactly one hour meets that reporting trigger. Telephone and detailed written reports have separate deadlines.
  • At a leak, keep away, use available shipment information safely and request trained assistance. Do not continue driving to find a truck stop.
Federal placarding conditionsTelephone incident reporting

Practice 80 questions with answer explanations. Complete hands-on instruction and any required registered ELDT separately. Some manual chapters are older; check the handbook guide for source dates and coverage.

Read the official Ohio chapter