US California DMV CDL Combination Vehicles Test 6

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

Prepared with up-to-date content

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

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

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

True or false in California: one type.

A) True

B) False

Question 2

True or false in California: visual only.

A) True

B) False

Question 3

True or false in California: fuel valve.

A) True

B) False

Question 4

True or false in California: with doubles.

A) True

B) False

Question 5

Which is correct about CDL combination vehicles in California?

A) van

B) single truck

C) tractor plus trailer(s)

D) bus

Question 6

What is a combination vehicle?

A) bus

B) tractor plus trailer(s)

C) van

D) single truck

Question 7

What is a converter dolly?

A) a tool box

B) a spare tire

C) device coupling doubles

D) a light

Question 8

How couple doubles?

A) no order

B) any order

C) rear trailer, dolly, front trailer in order

D) front first always

Question 9

What is the crack-the-whip effect?

A) engine surge

B) tire pop

C) brake lock

D) rear trailer swings in turns

Question 10

How prevent rollover in combos?

A) no need

B) brake in curve

C) speed through

D) slow well below curve speed

Question 11

What is off-tracking in combos?

A) tire brand

B) rear follows shorter path

C) brake wear

D) speeding

Question 12

How check coupling?

A) paint check

B) tire shine

C) fifth-wheel jaws locked, no gap

D) radio test

Question 13

What is trailer hand valve for?

A) fueling

B) testing trailer brakes only

C) lights

D) parking

Question 14

How test trailer emergency brakes?

A) drive fast

B) visual only

C) no test

D) charge, pull supply, tug test

Question 15

What is a shut-off valve for?

A) lights

B) horn

C) fuel flow

D) controls air to rear in doubles

Question 16

How many valves on last trailer?

A) none open (all closed)

B) half open

C) one open

D) all open

Question 17

What is the air line order?

A) connect service+emergency before moving

B) one line enough

C) no lines

D) drive then connect

Question 18

How inspect pintle hook?

A) no chains

B) rust fine

C) latched, safety chains crossed

D) loose ok

Question 19

What are safety chains for?

A) backup coupling if hook fails

B) weight

C) looks

D) noise

Question 20

How brake with empty trailers?

A) gentler (light trailers lock easily)

B) harder

C) same

D) no brakes

US California DMV CDL Combination Vehicles Test 6

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