US Washington DMV CDL Combination Vehicles Test 1

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

In Washington, what is a combination vehicle?

A) tractor plus trailer(s)

B) single truck

C) van

D) bus

Question 2

In Washington, what is a converter dolly?

A) device coupling doubles

B) a tool box

C) a spare tire

D) a light

Question 3

In Washington, how couple doubles?

A) any order

B) front first always

C) rear trailer, dolly, front trailer in order

D) no order

Question 4

In Washington, what is the crack-the-whip effect?

A) brake lock

B) engine surge

C) tire pop

D) rear trailer swings in turns

Question 5

In Washington, how prevent rollover in combos?

A) brake in curve

B) slow well below curve speed

C) no need

D) speed through

Question 6

In Washington, what is off-tracking in combos?

A) rear follows shorter path

B) brake wear

C) speeding

D) tire brand

Question 7

In Washington, how check coupling?

A) radio test

B) fifth-wheel jaws locked, no gap

C) tire shine

D) paint check

Question 8

In Washington, what is trailer hand valve for?

A) fueling

B) testing trailer brakes only

C) parking

D) lights

Question 9

In Washington, how test trailer emergency brakes?

A) no test

B) charge, pull supply, tug test

C) visual only

D) drive fast

Question 10

In Washington, what is a shut-off valve for?

A) controls air to rear in doubles

B) fuel flow

C) lights

D) horn

Question 11

In Washington, how many valves on last trailer?

A) one open

B) none open (all closed)

C) all open

D) half open

Question 12

In Washington, 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

In Washington, how inspect pintle hook?

A) rust fine

B) no chains

C) latched, safety chains crossed

D) loose ok

Question 14

In Washington, what are safety chains for?

A) weight

B) noise

C) backup coupling if hook fails

D) looks

Question 15

In Washington, how brake with empty trailers?

A) same

B) no brakes

C) gentler (light trailers lock easily)

D) harder

Question 16

In Washington, what is trailers jackknifing?

A) turning wide

B) tractor-trailer folds in skid

C) coupling step

D) parking trick

Question 17

In Washington, how avoid jackknife?

A) jerk wheel

B) steady braking, no sudden moves

C) slam brakes

D) speed up

Question 18

In Washington, how handle doubles in wind?

A) ignore

B) slow, extra space, firm grip

C) speed up

D) stop in lane

Question 19

In Washington, what is rearward amplification?

A) engine power

B) brake force

C) last trailer moves most

D) fuel use

Question 20

In Washington, how lane change with doubles?

A) no signal

B) tailgate first

C) slower, more space, signal long

D) quick swerve

US Washington DMV CDL Combination Vehicles Test 1

Test Complete

About This Test