US Washington 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 Washington — Cdl Combination DMV — Washington (USA, State Traffic Law) USA — Washington State DMV & FMCSA (MUTCD) — USA

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

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) tractor plus trailer(s)

C) van

D) bus

Question 2

What is a converter dolly?

A) a light

B) a spare tire

C) device coupling doubles

D) a tool box

Question 3

How couple doubles?

A) front first always

B) no order

C) any order

D) rear trailer, dolly, front trailer in order

Question 4

What is the crack-the-whip effect?

A) rear trailer swings in turns

B) brake lock

C) tire pop

D) engine surge

Question 5

How prevent rollover in combos?

A) speed through

B) slow well below curve speed

C) brake in curve

D) no need

Question 6

What is off-tracking in combos?

A) tire brand

B) speeding

C) brake wear

D) rear follows shorter path

Question 7

How check coupling?

A) radio test

B) fifth-wheel jaws locked, no gap

C) tire shine

D) paint check

Question 8

What is trailer hand valve for?

A) lights

B) fueling

C) testing trailer brakes only

D) parking

Question 9

How test trailer emergency brakes?

A) drive fast

B) no test

C) visual only

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) none open (all closed)

B) half open

C) one 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) rust fine

C) latched, safety chains crossed

D) loose ok

Question 14

What are safety chains for?

A) noise

B) weight

C) backup coupling if hook fails

D) looks

Question 15

How brake with empty trailers?

A) same

B) harder

C) gentler (light trailers lock easily)

D) no brakes

Question 16

What is trailers jackknifing?

A) parking trick

B) tractor-trailer folds in skid

C) coupling step

D) turning wide

Question 17

How avoid jackknife?

A) speed up

B) jerk wheel

C) steady braking, no sudden moves

D) slam brakes

Question 18

How handle doubles in wind?

A) speed up

B) ignore

C) stop in lane

D) slow, extra space, firm grip

Question 19

What is rearward amplification?

A) engine power

B) last trailer moves most

C) fuel use

D) brake force

Question 20

How lane change with doubles?

A) slower, more space, signal long

B) no signal

C) tailgate first

D) quick swerve

US Washington DMV CDL Combination Vehicles Test 8

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