Logo TestGru USA
Home Categories Forum Login Support
This test is for educational purposes only. Our platform is not operated by the College Board, DMV, or any official government agency. For official exam information, visit the relevant agency websites.

US Idaho DMV CDL Combination Vehicles Test 2

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

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

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 Idaho, what is a lowboy trailer?
A) food trailer
B) van
C) low deck for heavy equipment
D) tanker
Question 2
In Idaho, how secure converter dolly?
A) safety chains, lights connected
B) loose tow
C) fast tow
D) no lights
Question 3
In Idaho, what is kingpin inspection?
A) not bent, cracks, locked
B) grease amount
C) paint color
D) brand
Question 4
In Idaho, what gap between fifth wheel?
A) no gap (tight coupling)
B) any gap
C) 1 inch ok
D) not checked
Question 5
In Idaho, how uncouple safely?
A) level ground, brakes set, lower gear first
B) fast pull
C) no brakes
D) any slope
Question 6
In Idaho, what is trailer ABS light for?
A) turn signal
B) shows trailer ABS fault
C) brake lights
D) decoration
Question 7
In Idaho, how test ABS?
A) drive test
B) watch dash + trailer lamp at startup
C) no test
D) ask others
Question 8
In Idaho, what is landing gear position?
A) half down ok
B) down always
C) dragging fine
D) fully raised for travel
Question 9
In Idaho, how cross railroad with doubles?
A) shift on tracks
B) stop on tracks
C) race gates
D) know clearance, never stop on tracks
Question 10
In Idaho, what following distance for combos?
A) tailgate
B) 2 seconds
C) no rule
D) 6+ seconds at speed
Question 11
In Idaho, what are trailer brakes types?
A) no trailer brakes
B) service, emergency, parking
C) one type
D) hand only
Question 12
In Idaho, how check air lines on doubles?
A) connected, sealed, no leaks or tangles
B) tug hard
C) no check
D) visual only
Question 13
In Idaho, what is a tractor protection valve?
A) keeps tractor air if trailer breaks away
B) light switch
C) fuel valve
D) horn
Question 14
In Idaho, how test tractor protection?
A) pull trailer supply, check tractor brakes hold
B) drive test
C) no test
D) ask others
Question 15
In Idaho, what is bobtailing?
A) driving tractor without trailer
B) parking
C) with doubles
D) backing
Question 16
True or false in Idaho: tractor plus trailer(s).
A) True
B) False
Question 17
True or false in Idaho: device coupling doubles.
A) True
B) False
Question 18
True or false in Idaho: rear trailer, dolly, front trailer in order.
A) True
B) False
Question 19
True or false in Idaho: rear trailer swings in turns.
A) True
B) False
Question 20
True or false in Idaho: slow well below curve speed.
A) True
B) False

About This Test

For Drivers 16+ & CDL (USA, 51 States × 9 Topics) — State DMV permit and CDL General, Air Brakes, Combination, HazMat and Tanker per MUTCD & FMCSA state law. Section: DMV & CDL, USA.

DMV & CDL USA — 51 States (incl. DC) × 9 topics = 4,400+ tests: Road Signs (MUTCD), Traffic Laws, First Aid, Vehicle Technique, Motorcycle, CDL General Knowledge, Air Brakes, Combination, HazMat. State traffic law + FMCSA. 8×20Q per state-topic.

DMV Forum: no toxic driving shaming; respect first — auto-moderation → (content hidden) for profanity/insults in topics & replies.

Study Tips:

  • Study your state manual first
  • Master signs before laws
  • Do motorcycle/CDL separately
  • Drive kind — Forum kind