US North Carolina DMV CDL Combination Vehicles Test 8

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

Prepared with up-to-date content

DMV North Carolina — Cdl Combination DMV — North Carolina (USA, State Traffic Law) USA — North Carolina State DMV & FMCSA (MUTCD) — USA

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

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) tractor plus trailer(s)

B) bus

C) single truck

D) van

Question 2

What is a converter dolly?

A) a tool box

B) a light

C) device coupling doubles

D) a spare tire

Question 3

How couple doubles?

A) front first always

B) no order

C) rear trailer, dolly, front trailer in order

D) any order

Question 4

What is the crack-the-whip effect?

A) brake lock

B) tire pop

C) engine surge

D) rear trailer swings in turns

Question 5

How prevent rollover in combos?

A) slow well below curve speed

B) speed through

C) brake in curve

D) no need

Question 6

What is off-tracking in combos?

A) brake wear

B) speeding

C) tire brand

D) rear follows shorter path

Question 7

How check coupling?

A) paint check

B) tire shine

C) radio test

D) fifth-wheel jaws locked, no gap

Question 8

What is trailer hand valve for?

A) fueling

B) testing trailer brakes only

C) parking

D) lights

Question 9

How test trailer emergency brakes?

A) visual only

B) drive fast

C) no test

D) charge, pull supply, tug test

Question 10

What is a shut-off valve for?

A) fuel flow

B) lights

C) horn

D) controls air to rear in doubles

Question 11

How many valves on last trailer?

A) half open

B) one open

C) all open

D) none open (all closed)

Question 12

What is the air line order?

A) no lines

B) connect service+emergency before moving

C) drive then connect

D) one line enough

Question 13

How inspect pintle hook?

A) latched, safety chains crossed

B) rust fine

C) loose ok

D) no chains

Question 14

What are safety chains for?

A) weight

B) looks

C) noise

D) backup coupling if hook fails

Question 15

How brake with empty trailers?

A) no brakes

B) same

C) harder

D) gentler (light trailers lock easily)

Question 16

What is trailers jackknifing?

A) coupling step

B) turning wide

C) parking trick

D) tractor-trailer folds in skid

Question 17

How avoid jackknife?

A) speed up

B) steady braking, no sudden moves

C) jerk wheel

D) slam brakes

Question 18

How handle doubles in wind?

A) slow, extra space, firm grip

B) stop in lane

C) speed up

D) ignore

Question 19

What is rearward amplification?

A) brake force

B) engine power

C) last trailer moves most

D) fuel use

Question 20

How lane change with doubles?

A) no signal

B) tailgate first

C) slower, more space, signal long

D) quick swerve

US North Carolina DMV CDL Combination Vehicles Test 8

Test Complete

About This Test