Free Arkansas CDL Hazmat Endorsement Test Practice Test

Sample CDL Hazmat Endorsement practice questions

Try a few representative questions below. Each includes the correct answer and a short explanation — the same style you'll see in the full practice test.

1. Question 1Radioactive Materials

   A driver is transporting a shipment of radioactive material, UN2915, Class 7, with a total transport index (TI) of 25. The vehicle has a placarded gross weight of 50,000 lbs. If the driver must maintain a minimum separation distance from people and undeveloped photographic film, what is the *minimum* distance, in feet, required from undeveloped film if the TI is 25?

   • A.2,500 feet(Correct)
   • B.1,250 feet
   • C.5,000 feet
   • D.10,000 feet

   Explanation

   The minimum distance from undeveloped film is calculated by multiplying the Transport Index (TI) by 100 feet. For a TI of 25, this is 25 * 100 feet = 2,500 feet. This ensures that the radiation dose to the film does not exceed a level that would cause noticeable fogging.

2. Question 2Quantity Limitations

   A driver is hauling a load of liquid Class 3 flammable liquids in a cargo tank. The cargo tank has a capacity of 5,000 gallons. The driver is transporting two different products: 2,000 gallons of UN1203 (Gasoline, Packing Group I) and 2,500 gallons of UN1993 (Flammable Liquid, n.o.s., Packing Group II). What is the *maximum* net quantity of UN1993 (PG II) that could be added to the tank if the remaining space is to be filled with UN1203 (PG I)?

   • A.500 gallons(Correct)
   • B.2,500 gallons
   • C.4,000 gallons
   • D.3,500 gallons

   Explanation

   The maximum quantity of a lower hazard class (Packing Group II) is limited by the presence of a higher hazard class (Packing Group I). For flammable liquids, the limits are 1000 gallons for PG I and 4000 gallons for PG II. Since 2000 gallons of PG I are already present (which is less than the 1000 gallon limit per container if it were solely PG I), the remaining 3000 gallons of capacity can only accommodate PG II materials up to the 4000 gallon limit for PG II. However, the tank already contains 2500 gallons of UN1993 (PG II). Therefore, only 4000 - 2500 = 1500 gallons of UN1993 (PG II) could be added. If the driver wanted to fill the remaining space with UN1203 (PG I), they could add 500 gallons of UN1203 (2000 + 500 = 2500 gallons total PG I). Since the question asks for the maximum UN1993 PG II that could be added *if* the remaining space is filled with UN1203 PG I, the amount of UN1993 PG II is limited by the total tank capacity (5000 gallons) minus the amount of UN1203 PG I (2500 gallons) which is 2500 gallons. Therefore, only 500 gallons of UN1993 (PG II) can be added.

3. Question 3Placarding Requirements

   A driver is transporting a shipment of Division 4.3 Dangerous When Wet material. The shipping papers indicate a gross weight of 5,000 lbs and a net weight of 4,000 lbs. The material is in single packagings. What is the *minimum* size of the placards required for this shipment on the vehicle?

   • A.10" x 10"
   • B.8" x 8"
   • C.12" x 12"
   • D.10.75" x 10.75"(Correct)

   Explanation

   Division 4.3 materials require the DANGEROUS WHEN WET placard. For shipments exceeding 1,000 lbs gross weight, placards are required. The standard placard size for most hazardous materials is 10.75" x 10.75". While smaller placards exist for some specific applications, the standard size applies here.

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