HazMat #1
Hazmat Test | District Of Columbia 2026 #1 Page 3 of 5
On our website, we provide FREE practice - CDL hazmat test online! The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a DC CDL hazmat endorsement in 2026, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that District Of Columbia requirements for issuing a hazmat endorsement for CDL may vary from those established in other states.
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13 . If hazardous materials are being transported, how are other drivers warned?
By the driver waving an arm out the window
Diamond-shaped signs called placards are placed on the outside of vehicles carrying hazardous materials to alert other drivers to the presence of the materials.
14 . The only way to properly check tire pressure is by:
Measuring the height of the tire.
You should examine your tires at the beginning of every trip and after every stop to ensure that they are properly inflated. The only acceptable way to check tire pressure is to use a tire pressure gauge.
15 . When refueling a vehicle transporting hazardous materials:
Someone other than the driver should do it.
Always turn the engine off before refueling a vehicle carrying hazardous materials. Someone must always be at the nozzle controlling the fuel flow.
16 . Shippers must label hazardous materials. If an item is smaller than its label, how should the item be labeled?
The item may be placed in a box displaying a warning label.
Shippers must place diamond-shaped hazard warning labels on most packages of hazardous materials. If the label won't fit on the package, it can be placed on a tag that is securely attached to the package.
17 . If you are transporting explosives and your vehicle breaks down, you may notify other drivers:
By keeping the driver's side door open.
If your vehicle breaks down on the road while you are transporting explosive materials, you must warn other drivers. Put out warning signals like reflective triangles or electric lights if you are carrying Division 1.1, 1.2, or 1.3 explosives. Do the same if you are driving a tank used to transport Class 3 flammable liquids or Division 2.1 flammable gases, even if the tank is empty. If transporting flammable materials, do not use warning signals that could cause your cargo to catch fire.
18 . If a substance is transported in a reportable quantity, which letters must appear on the shipping paper and package?
NT
