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US Idaho DMV CDL General Knowledge Test 8

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

Prepared with up-to-date content
DMV Idaho — Cdl General DMV — Idaho (USA, State Traffic Law) USA — Idaho State DMV & FMCSA (MUTCD) — USA
What is this test? for Idaho DMV Cdl General permit/CDL, USA (MUTCD) — DMV — Idaho (USA, State Traffic Law) level, USA — Idaho.
Is this for you? For driver candidates in Idaho, USA — Cdl General permit/CDL (16+, State DMV)
Section: DMV Idaho — Cdl General · Education: High School & Adult (16+) · Part: DMV Idaho — Cdl General · 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
How should you brake on downgrades?
A) select low gear + light steady braking
B) neutral coast
C) ride brakes hard
D) pump fast
Question 2
What is brake fade?
A) overheated brakes losing power
B) wet brakes
C) new brakes
D) cold brakes
Question 3
How handle blowout in truck?
A) jerk hard
B) firm grip, ease off, pull over
C) slam brakes
D) accelerate
Question 4
What is hydroplaning speed risk?
A) as low as 30 mph on film of water
B) only ice
C) only 100+
D) never in trucks
Question 5
How back a trailer?
A) fast with camera
B) turn wheel opposite, use mirrors/spotter
C) steer same way
D) no spotter needed
Question 6
What is off-tracking?
A) brake wear
B) rear wheels cut inside in turns
C) speeding
D) tire brand
Question 7
How take curves with CMV?
A) slow below posted truck speed
B) no need to slow
C) same as cars
D) faster
Question 8
What are escape ramps for?
A) rest stops
B) weigh stations
C) runaway trucks on downgrades
D) parking
Question 9
When use hazard flashers?
A) breakdowns, slow traffic warnings
B) parking legally
C) night driving
D) always driving
Question 10
What is night driving rule?
A) slower, within headlight range
B) no lights rural
C) same speed
D) high beams always
Question 11
How park a CMV?
A) any slope
B) in gear only
C) level ground, parking brake, chock if needed
D) neutral anywhere
Question 12
What is coupling inspection?
A) paint check
B) tire shine
C) radio test
D) fifth-wheel jaws locked, no gap, lines secure
Question 13
What are glad hands for?
A) waving
B) air line connections tractor-trailer
C) light switches
D) fuel caps
Question 14
What color is emergency air line?
A) yellow
B) blue
C) green
D) red
Question 15
What color is service air line?
A) red
B) black
C) blue
D) white
Question 16
What is landing gear check?
A) dragging fine
B) no check
C) fully raised, handle secured
D) half down ok
Question 17
How test trailer emergency brakes?
A) drive fast
B) pull trailer air supply, tug gently
C) no test
D) visual only
Question 18
What is a DOT annual inspection?
A) driver exam
B) required yearly vehicle inspection
C) optional
D) every 5 years
Question 19
What goes in a driver log?
A) hours, duty changes, locations
B) songs
C) meals
D) dreams
Question 20
What is personal conveyance?
A) team driving
B) hauling freight
C) limited personal use off-duty
D) paid miles

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