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

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

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 South Carolina: one type.

A) True

B) False

Question 2

True or false in South Carolina: visual only.

A) True

B) False

Question 3

True or false in South Carolina: fuel valve.

A) True

B) False

Question 4

True or false in South Carolina: with doubles.

A) True

B) False

Question 5

Which is correct about CDL combination vehicles in South Carolina?

A) van

B) bus

C) tractor plus trailer(s)

D) single truck

Question 6

What is a combination vehicle?

A) bus

B) van

C) single truck

D) tractor plus trailer(s)

Question 7

What is a converter dolly?

A) a spare tire

B) a tool box

C) a light

D) device coupling doubles

Question 8

How couple doubles?

A) rear trailer, dolly, front trailer in order

B) any order

C) no order

D) front first always

Question 9

What is the crack-the-whip effect?

A) rear trailer swings in turns

B) engine surge

C) tire pop

D) brake lock

Question 10

How prevent rollover in combos?

A) speed through

B) no need

C) slow well below curve speed

D) brake in curve

Question 11

What is off-tracking in combos?

A) speeding

B) tire brand

C) rear follows shorter path

D) brake wear

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) lights

C) testing trailer brakes only

D) parking

Question 14

How test trailer emergency brakes?

A) no test

B) visual only

C) charge, pull supply, tug test

D) drive fast

Question 15

What is a shut-off valve for?

A) controls air to rear in doubles

B) lights

C) horn

D) fuel flow

Question 16

How many valves on last trailer?

A) all open

B) one open

C) none open (all closed)

D) half open

Question 17

What is the air line order?

A) drive then connect

B) connect service+emergency before moving

C) no lines

D) one line enough

Question 18

How inspect pintle hook?

A) rust fine

B) loose ok

C) no chains

D) latched, safety chains crossed

Question 19

What are safety chains for?

A) backup coupling if hook fails

B) noise

C) looks

D) weight

Question 20

How brake with empty trailers?

A) gentler (light trailers lock easily)

B) harder

C) same

D) no brakes

US South Carolina DMV CDL Combination Vehicles Test 6

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