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 General Knowledge Test 1

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
In Idaho, what is a pre-trip inspection for?
A) paperwork
B) washing truck
C) catching unsafe conditions before driving
D) warming engine only
Question 2
In Idaho, what are hours-of-service limits (property)?
A) 5 hours max
B) 11 driving hours after 10 off
C) no limits
D) 20 hours straight
Question 3
In Idaho, what is GVWR vs GCWR?
A) single-unit vs combination max weight
B) speed limits
C) same thing
D) tire sizes
Question 4
In Idaho, what belongs in an emergency kit?
A) extra fuel cans
B) pillow
C) triangles, extinguisher, spare fuses
D) snacks only
Question 5
In Idaho, how check cargo securement?
A) once a year
B) only at delivery
C) within first 50 miles, then regularly
D) never
Question 6
In Idaho, what is the bridge formula for?
A) toll prices
B) bridge height
C) legal axle weight/spacing limits
D) paint colors
Question 7
In Idaho, how far ahead scan at highway speed?
A) 1 mile always
B) 2 seconds
C) never
D) 12-15 seconds (quarter mile)
Question 8
In Idaho, what is stopping distance made of?
A) brakes only
B) luck
C) tires only
D) perception + reaction + braking
Question 9
In Idaho, how should you brake on downgrades?
A) pump fast
B) select low gear + light steady braking
C) ride brakes hard
D) neutral coast
Question 10
In Idaho, what is brake fade?
A) new brakes
B) cold brakes
C) wet brakes
D) overheated brakes losing power
Question 11
In Idaho, how handle blowout in truck?
A) slam brakes
B) jerk hard
C) firm grip, ease off, pull over
D) accelerate
Question 12
In Idaho, what is hydroplaning speed risk?
A) as low as 30 mph on film of water
B) never in trucks
C) only ice
D) only 100+
Question 13
In Idaho, how back a trailer?
A) no spotter needed
B) steer same way
C) fast with camera
D) turn wheel opposite, use mirrors/spotter
Question 14
In Idaho, what is off-tracking?
A) speeding
B) rear wheels cut inside in turns
C) tire brand
D) brake wear
Question 15
In Idaho, how take curves with CMV?
A) faster
B) no need to slow
C) same as cars
D) slow below posted truck speed
Question 16
In Idaho, what are escape ramps for?
A) rest stops
B) parking
C) weigh stations
D) runaway trucks on downgrades
Question 17
In Idaho, when use hazard flashers?
A) night driving
B) always driving
C) parking legally
D) breakdowns, slow traffic warnings
Question 18
In Idaho, what is night driving rule?
A) same speed
B) no lights rural
C) high beams always
D) slower, within headlight range
Question 19
In Idaho, how park a CMV?
A) in gear only
B) level ground, parking brake, chock if needed
C) neutral anywhere
D) any slope
Question 20
In Idaho, what is coupling inspection?
A) tire shine
B) paint check
C) radio test
D) fifth-wheel jaws locked, no gap, lines secure

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