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

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

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 Oklahoma: one type.

A) True

B) False

Question 2

True or false in Oklahoma: visual only.

A) True

B) False

Question 3

True or false in Oklahoma: fuel valve.

A) True

B) False

Question 4

True or false in Oklahoma: with doubles.

A) True

B) False

Question 5

Which is correct about CDL combination vehicles in Oklahoma?

A) tractor plus trailer(s)

B) van

C) bus

D) single truck

Question 6

What is a combination vehicle?

A) van

B) tractor plus trailer(s)

C) bus

D) single truck

Question 7

What is a converter dolly?

A) a spare tire

B) a light

C) a tool box

D) device coupling doubles

Question 8

How couple doubles?

A) front first always

B) no order

C) any order

D) rear trailer, dolly, front trailer in order

Question 9

What is the crack-the-whip effect?

A) tire pop

B) brake lock

C) rear trailer swings in turns

D) engine surge

Question 10

How prevent rollover in combos?

A) brake in curve

B) no need

C) speed through

D) slow well below curve speed

Question 11

What is off-tracking in combos?

A) rear follows shorter path

B) tire brand

C) brake wear

D) speeding

Question 12

How check coupling?

A) radio test

B) fifth-wheel jaws locked, no gap

C) paint check

D) tire shine

Question 13

What is trailer hand valve for?

A) parking

B) testing trailer brakes only

C) lights

D) fueling

Question 14

How test trailer emergency brakes?

A) drive fast

B) charge, pull supply, tug test

C) no test

D) visual only

Question 15

What is a shut-off valve for?

A) fuel flow

B) horn

C) controls air to rear in doubles

D) lights

Question 16

How many valves on last trailer?

A) one open

B) all open

C) half open

D) none open (all closed)

Question 17

What is the air line order?

A) no lines

B) connect service+emergency before moving

C) one line enough

D) drive then connect

Question 18

How inspect pintle hook?

A) rust fine

B) no chains

C) latched, safety chains crossed

D) loose ok

Question 19

What are safety chains for?

A) looks

B) weight

C) noise

D) backup coupling if hook fails

Question 20

How brake with empty trailers?

A) same

B) harder

C) no brakes

D) gentler (light trailers lock easily)

US Oklahoma DMV CDL Combination Vehicles Test 6

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