Free Iowa CDL General Knowledge Practice Test 2022

You are looking for actual practice for your coming CDL test? So you have come to the right place. Our IA General Knowledge Practice Test has the same questions as the real exam which is based on the Iowa CDL Manual. Our CDL practice test pack covers most of the subject areas on the Iowa General Knowledge Test such as shifting techniques, railroad crossing safety, drunk driving laws, and much more to make you become a safer driver. In addition, each question has a detailed explanation that will help you understand the concept and answer future questions about it correctly. If you don't get the pass right away, don't worry, you can take this practice test an unlimited number of times to make sure you learn all the questions. Our Iowa CDL Practice Test will refine your driving knowledge so you can earn your CDL and start driving on the roads. Let’s take our practice test now!

Our CDL practice tests:
Based on 2022 IA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
IA CDL General Knowledge Test format:
50 questions
40 correct answers to pass
80% passing score
List of questions
1.
One can recognize hazardous materials by looking on the container:
2.
How do you stop a front-wheel skid?
3.
You are driving on a clear night with your low beam lights on. If your headlights let you see about 250 feet ahead of you, you should adjust your speed so that you can stop within about _____ feet.
4.
Which of these statements about stopping distance and speed is true?
5.
What does HOS stand for?
6.
Which statement is true?
7.
Which of these statements about using turn signals is true?
8.
Which of these statements about driving in areas with strong wind is true?
9.
What is the best way to prevent brake failure on long downgrades?
10.
What is the aggregate WLL of two indirect tiedowns with a WLL of 5,000 lbs, and one tiedown with a WLL of 6,000 lbs?
11.
Why is it important to shift gears correctly?
12.
When starting a bus on a level surface with good traction there is often no need for:
13.
What does the 14 hour on duty limit mean?
14.
All lights and reflectors should be operating properly, clean, and:
15.
Using 6 miles per gallon as your fuel mileage and 8 pounds per gallon for the weight of fuel, how much total fuel weight will you burn off in 600 miles?
16.
The aggregate WLL for logs loaded lengthwise must be at least:
17.
You're in Illinois which allows up to 20,000 pounds on the steer axle. You're heading to Indiana which only allows 12,000 on the steer axle. Your steer tires have a load rating of 6,500 pounds each. What is the maximum legal weight your steer axle can be for each of the two states?
18.
When loaded cement pipe over 45 inches in diameter, which pipes should be blocked, wedged, or otherwise immobilized?
19.
When driving in cold weather your tire tread should:
20.
Based on the following information, how much fuel can you legally add while remaining legal on the drive axles?

Percentage of fuel weight to drive axles: 25%

Weight Before Fueling: Steer: 11,275, drives: 33,800, gross: 77,420

21.
What does DOT stand for?
22.
Which of the statements about pre-trip inspection is true?
23.
All of the following are lighting requirements for combination vehicles longer than 20 feet or wider than 80 inches except:
24.
When you are driving on a snow packed road, you should reduce your speed by:
25.
When driving, when is it acceptable to signal other drivers that it is safe to pass?
26.
What does emergency braking mean?
27.
Impaired drivers who present potential hazards may tend to:
28.
Which of these is a good thing to remember about using mirrors?
29.
Your brakes can get wet when driving through heavy rain. What can happen if the brakes are applied?
30.
Which of these could be considered off duty time?
31.
Communication means:
32.
A dunnage bag is:
33.
To satisfy general cargo securement requirements, what is the minimum WLL for securing vehicles under 10,000 lbs?
34.
Who is responsible for inspecting securing devices and cargo within the first 50 miles?
35.
To protect the area after an accident, steps you should take include:
36.
You should use your horn when:
37.
When securing heavy vehicles, what is the minimum WLL of each tiedown?
38.
A 'hook-lift container' is:
39.
If you have a heavy load that is slowing you down on an upgrade you should:
40.
To help stay alert while driving, when should you take breaks?
41.
If you have used up all of your 14 hour on duty time, how many hours would you regain after an 8 hour break in the sleeper berth?
42.
When stopping before a turn, do all of the following except:
43.
Sharp pavement drop-offs:
44.
Which of these statements about the hazard of vehicle fire is true?
45.
Some of the serious driving errors that can be caused by alcohol include:
46.
What is the minimum number of tiedowns required through the eye of a metal coil loaded crosswise?
47.
Posted heights at overpasses:
48.
CDL drivers from New York State require the Metal Coils Endorsement when transporting metals coils weighing:
49.
The purpose of hazmat rules includes all of these except:
50.
When securing paper rolls with eyes vertical in a sided vehicle all of the following are acceptable except: