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

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

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 light

B) a tool box

C) device coupling doubles

D) a spare tire

Question 3

How couple doubles?

A) any order

B) front first always

C) rear trailer, dolly, front trailer in order

D) no order

Question 4

What is the crack-the-whip effect?

A) rear trailer swings in turns

B) tire pop

C) brake lock

D) engine surge

Question 5

How prevent rollover in combos?

A) no need

B) speed through

C) slow well below curve speed

D) brake in curve

Question 6

What is off-tracking in combos?

A) rear follows shorter path

B) tire brand

C) brake wear

D) speeding

Question 7

How check coupling?

A) radio test

B) paint check

C) tire shine

D) fifth-wheel jaws locked, no gap

Question 8

What is trailer hand valve for?

A) testing trailer brakes only

B) parking

C) fueling

D) lights

Question 9

How test trailer emergency brakes?

A) charge, pull supply, tug test

B) no test

C) drive fast

D) visual only

Question 10

What is a shut-off valve for?

A) horn

B) fuel flow

C) lights

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) no lines

B) connect service+emergency before moving

C) one line enough

D) drive then connect

Question 13

How inspect pintle hook?

A) no chains

B) rust fine

C) loose ok

D) latched, safety chains crossed

Question 14

What are safety chains for?

A) noise

B) looks

C) backup coupling if hook fails

D) weight

Question 15

How brake with empty trailers?

A) gentler (light trailers lock easily)

B) harder

C) no brakes

D) same

Question 16

What is trailers jackknifing?

A) turning wide

B) coupling step

C) parking trick

D) tractor-trailer folds in skid

Question 17

How avoid jackknife?

A) speed up

B) jerk wheel

C) slam brakes

D) steady braking, no sudden moves

Question 18

How handle doubles in wind?

A) stop in lane

B) speed up

C) slow, extra space, firm grip

D) ignore

Question 19

What is rearward amplification?

A) fuel use

B) last trailer moves most

C) brake force

D) engine power

Question 20

How lane change with doubles?

A) no signal

B) quick swerve

C) slower, more space, signal long

D) tailgate first

US Illinois DMV CDL Combination Vehicles Test 8

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