1 . When driving a tank vehicle, valves or manhole covers:

Should be open.
Should be closed.
Should be removed.
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2 . You may leave a vehicle that is carrying explosives unattended:

Under a bridge.
In a safe haven.
On the shoulder of a highway.
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3 . Before driving a tank, you should:

Check pipes, connections, and hoses for leaks.
Make sure manhole covers do not have gaskets.
Ensure all valves are open.
Open the drain valves.
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4 . If you notice hazardous materials leaking while you are driving, you should:

Drive to a phone booth.
Park the vehicle as soon as possible.
Leave the area to find help.
Drive around looking for a person to repair the leak.
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5 . The only way to properly check tire pressure is by:

Using a tire pressure gauge.
Eyeballing the tire.
Pushing on the tire with your hand.
Measuring the height of the tire.
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6 . When driving at night, you should do all of the following, except:

Make sure you are rested.
Make sure your glasses are clean.
Wear sunglasses.
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7 . When coupling a trailer:

Make sure to couple the proper glad hands.
Glad hands can be connected to any other glad hands.
Only one set of glad hands should be connected.
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8 . In the event of a cargo fire, opening trailer doors may cause a fire to expand because:

Oxygen will be allowed into the area.
The temperature of the trailer will change.
It will provide moisture.
It will provide more light.
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9 . If a driver has stopped on the road and is placing triangles to warn other motorists:

The triangles should be held between the driver and oncoming traffic.
The triangles should be carried behind the driver's back to prevent them from being seen by other drivers until they are placed.
The triangles should be held as low as possible.
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10 . Tanks have high centers of gravity, which means:

They get very good gas mileage.
They are easy to roll over.
They are very stable.
They are easy to steer.
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11 . In the event of a fire, what should you do before opening trailer doors?

Check to see if the doors are hot.
Throw water on the doors.
Find someone else to open the doors.
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12 . How long do shippers need to keep a copy of shipping papers for hazardous materials?

Five months
One year
Two years
10 years
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13 . Drowsy driving is most common during:

The night.
The early morning.
The mid-afternoon.
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14 . What is a drawback of retarders?

They may not be permitted everywhere.
They can help to slow a vehicle.
They cannot be turned off.
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15 . If you are driving in fog, you should not:

Turn on the four-way flashers.
Slow down.
Use your high beam lights.
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16 . Strong winds usually cause the greatest issues for:

Lighter vehicles.
Heavier vehicles.
Flatbed trailers.
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17 . What can be a clue that a shipment may contain hazardous materials?

The shipper is a business you might expect to deal with hazardous materials.
The last shipment you picked up was labeled as hazardous.
The packaging looks damaged.
The road is made of gravel.
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18 . How many daily hours of sleep does an adult need to maintain alertness?

Six to seven
Seven to eight
Eight to nine
Four to five
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19 . When a vehicle is started:

The brakes should be locked up.
Warning lights should turn on, then quickly turn off.
The coolant temperature should decrease.
The hood must be open.
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20 . If transporting explosives, you may leave your vehicle unattended:

In a rest area.
At a truck stop.
On private property.
In a safe haven.
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