US New Jersey DMV CDL Combination Vehicles Test 8

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

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DMV New Jersey — Cdl Combination DMV — New Jersey (USA, State Traffic Law) USA — New Jersey State DMV & FMCSA (MUTCD) — USA

What is this test? for New Jersey DMV Cdl Combination permit/CDL, USA (MUTCD) — DMV — New Jersey (USA, State Traffic Law) level, USA — New Jersey.
Is this for you? For driver candidates in New Jersey, USA — Cdl Combination permit/CDL (16+, State DMV)
Section: DMV New Jersey — Cdl Combination · Education: High School & Adult (16+) · Part: DMV New Jersey — Cdl Combination · Country: USA · Region: USA — New Jersey

The DMV written test is an important step measuring driver candidates' knowledge of traffic laws, first aid, and vehicle technology.

This test reinforces your theoretical knowledge and provides the fundamentals needed to pass the exam and become a safe driver.

By solving this test of 20 questions, you can both test your knowledge and identify the topics you need to improve.

Question 1

What is a combination vehicle?

A) single truck

B) van

C) bus

D) tractor plus trailer(s)

Question 2

What is a converter dolly?

A) a tool box

B) a spare tire

C) device coupling doubles

D) a light

Question 3

How couple doubles?

A) any order

B) rear trailer, dolly, front trailer in order

C) front first always

D) no order

Question 4

What is the crack-the-whip effect?

A) brake lock

B) engine surge

C) tire pop

D) rear trailer swings in turns

Question 5

How prevent rollover in combos?

A) slow well below curve speed

B) no need

C) speed through

D) brake in curve

Question 6

What is off-tracking in combos?

A) brake wear

B) rear follows shorter path

C) speeding

D) tire brand

Question 7

How check coupling?

A) fifth-wheel jaws locked, no gap

B) paint check

C) radio test

D) tire shine

Question 8

What is trailer hand valve for?

A) fueling

B) lights

C) testing trailer brakes only

D) parking

Question 9

How test trailer emergency brakes?

A) drive fast

B) charge, pull supply, tug test

C) no test

D) visual only

Question 10

What is a shut-off valve for?

A) controls air to rear in doubles

B) horn

C) lights

D) fuel flow

Question 11

How many valves on last trailer?

A) one open

B) none open (all closed)

C) half open

D) all open

Question 12

What is the air line order?

A) connect service+emergency before moving

B) no lines

C) drive then connect

D) one line enough

Question 13

How inspect pintle hook?

A) no chains

B) loose ok

C) rust fine

D) latched, safety chains crossed

Question 14

What are safety chains for?

A) backup coupling if hook fails

B) noise

C) looks

D) weight

Question 15

How brake with empty trailers?

A) gentler (light trailers lock easily)

B) same

C) no brakes

D) harder

Question 16

What is trailers jackknifing?

A) turning wide

B) tractor-trailer folds in skid

C) parking trick

D) coupling step

Question 17

How avoid jackknife?

A) jerk wheel

B) slam brakes

C) speed up

D) steady braking, no sudden moves

Question 18

How handle doubles in wind?

A) stop in lane

B) speed up

C) ignore

D) slow, extra space, firm grip

Question 19

What is rearward amplification?

A) last trailer moves most

B) fuel use

C) brake force

D) engine power

Question 20

How lane change with doubles?

A) slower, more space, signal long

B) tailgate first

C) quick swerve

D) no signal

US New Jersey DMV CDL Combination Vehicles Test 8

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