What is the California CDL tanker endorsement?

California uses the Tank Vehicle or N endorsement for qualifying CDL vehicles that haul liquid or gaseous material in attached tanks. California DMV Section 8 says the cargo does not have to be hazardous material.

What tank size requires the N endorsement in California?

California DMV Section 8 uses the threshold of tanks with an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1,000 gallons or more, permanently or temporarily attached to the vehicle or chassis.

What score do I need to pass the tanker knowledge test?

Federal CDL rules in 49 CFR §383.135 require at least 80% correct on each knowledge test. California DMV administers CDL knowledge testing under those federal standards.

Does the California tanker endorsement require ELDT?

FMCSA ELDT applies to first-time Class A/B applicants, Class B-to-A upgrades, and first-time School Bus, Passenger, or HazMat endorsements. Tank Vehicle (N) alone is not listed as an ELDT-triggering endorsement, though ELDT may apply to your underlying CDL class or other endorsement path.

Can I drive a loaded tanker with a California CLP and N endorsement?

No. California DMV states a CLP holder with an N endorsement may operate a tank vehicle only when it is empty. If the tank previously contained hazardous material, it must be purged.

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What is the purpose of a bill of lading for tanker cargo?

To document what is being shipped, from whom, and to whom

Just for insurance

Only to track the truck location

It has no purpose

to track

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Key Facts: California CDL Tanker Vehicles Endorsement Test Exam

California tank vehicle endorsement code

California DMV Commercial Driver Handbook Section 8

>119 gal / 1,000+ gal

Individual and aggregate tank capacity threshold

California DMV Commercial Driver Handbook Section 8

80%

Federal CDL knowledge-test minimum passing score

49 CFR §383.135

$59

California DMV fee to add Tank/Doubles-Triples/HazMat endorsement

California DMV Licensing Fees

California requires the N endorsement for CDL vehicles hauling liquid or gaseous material in qualifying attached tanks over 119 gallons individually and 1,000 gallons aggregate capacity; the cargo does not have to be HazMat. Federal rules require a specialized tank vehicle knowledge test and at least 80% correct on CDL knowledge tests. California CLP holders with N may drive only empty tanks, and tanks that previously contained HazMat must be purged.

Sample California CDL Tanker Vehicles Endorsement Test Practice Questions

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1Which endorsement does California use for qualifying CDL tank vehicles?

A.N endorsement

B.T endorsement

C.P endorsement

D.M endorsement

Explanation: California DMV identifies the Tank Vehicle endorsement as N for qualifying tank vehicles.

2For California tank vehicle endorsement purposes, the liquid or gas must be:

A.Hazardous material only

B.Flammable liquid only

C.Liquid or gaseous material; it does not have to be HazMat

D.Food product only

Explanation: California DMV says the liquid or gas does not have to be hazardous material.

3Which capacity threshold appears in California DMV Section 8 for N endorsement tank vehicles?

A.More than 119 gallons individually and 1,000 gallons or more aggregate

B.Any container over 5 gallons

C.Only one tank over 5,000 gallons

D.Exactly 500 gallons total

Explanation: California uses tanks over 119 gallons individually and 1,000 gallons or more aggregate capacity.

4What is liquid surge?

A.The sloshing movement of liquid in a tank

B.The tank specification plate

C.The legal empty weight of the tractor

D.The empty space left for expansion

Explanation: Surge is liquid movement inside the tank, especially in partial loads.

5What is outage in a cargo tank?

A.Empty space left for liquid expansion

B.A failed brake valve

C.A baffle with no holes

D.A loose fifth wheel

Explanation: Outage is the space left so liquid can expand as it warms.

6What is the purpose of baffles in a liquid tank?

A.To slow forward-and-back liquid surge

B.To eliminate all side surge

C.To increase legal gross weight

D.To replace leak inspections

Explanation: Baffles have holes that slow front-to-back liquid flow.

7What is a smooth-bore tank?

A.A tank with no internal structures to slow liquid flow

B.A tank divided by solid compartments

C.A dry freight trailer

D.A tank that cannot carry liquid

Explanation: A smooth-bore or unbaffled tank has nothing inside to slow liquid movement.

8How are bulkheads different from baffles?

A.Bulkheads divide tanks into smaller tanks; baffles have holes

B.Bulkheads are brake parts; baffles are tire parts

C.Bulkheads remove the need for outage

D.Bulkheads are only for buses

Explanation: Bulkheads divide tanks into compartments, while baffles have holes to slow flow.

9Why are tank vehicles easier to roll over than many other CMVs?

A.Much of the load is carried high off the road

B.They have no brakes

C.They cannot carry heavy loads

D.They have no steering axle

Explanation: California DMV says the high center of gravity makes tank vehicles top-heavy and easy to roll over.

10How should a tank vehicle take curves and ramps?

A.Well below posted speeds when needed

B.At posted speed or faster

C.Only while braking hard

D.With the parking brake partly applied

Explanation: California DMV warns tankers can roll over at posted curve speeds.

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