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Maryland CDL Permit Test - Tank

Number of questions: 20
Passing score: 16
Directions: This endorsement is required to haul any liquid or gaseous materials in a tank or tanks having a capacity of 1,000 gallons or more that is either permanently or temporarily attached to the vehicle or chassis. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. Each question has three or four possible answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the Maryland Commercial Driver Guide. Questions come from chapters covering: Driving Safely, Tank Vehicles, Hazardous Materials and Combination Vehicles. The Tank endorsement can be used with the Class A, B or C CDL.
You have made error so far
Passing grade —
4 or fewer errors
Only occurs at extremely high speeds.
Can occur at speeds as low as 30 mph.
Happens most frequently when tire pressure is too high.
When carrying more than 500 gallons of flammable liquid in a tank truck, a driver may drive no more than ____ within a single work period.
12 hours
10 hours
15 hours
During a cargo fire, opening the trailer doors may actually cause the fire to expand because doing so:
Allows oxygen into the trailer.
Changes the temperature of the trailer.
Provides more moisture to the trailer.
Areas of the road that are shaded:
Usually do not freeze.
Usually do not contain moisture, so they can’t freeze.
Will remain slick after ice on other areas of the road has melted.
Should always be avoided.
Heights posted at bridges:
Are always accurate.
Are legally binding.
Can be incorrect.
Rollovers are most likely to happen when:
Drivers turn too fast.
Driver turn too slowly.
It is windy.
It is raining.
How many air lines does a combination vehicle have?
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