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.
To prevent a load from shifting, there should be at least one tie down for every ____ feet of cargo.
2.
You must drive through deep or flowing water, you should not:
3.
The center of gravity of a load:
4.
Special permits will be required for loads that are:
5.
"The driver’s manual suggests several things to do when you pass a vehicle. Which of these is NOT one of them?"
6.
At what time does a violation occur on this log?
7.
Which of these statements about speed management is true?
8.
You weigh the truck immediately before and after fueling. Based on the following, determine what percentage of the weight goes to each set of axles:

Before fueling:

steer: 10,200, drives: 31,300, gross: 71,700

After fueling:

steer:11,000, drives: 31,500, gross: 72,700

9.
High friction securement devices include:
10.
Which of these is true about tires and hot weather?
11.
Overloading can have all of the following effects except:
12.
Implied consent means:
13.
You should be prepared to the examiner:
14.
A stake pocket is:
15.
All of the following are exempt from needing a CDL except:
16.
When securing building materials, spacer requirements include all of the following except:
17.
A female housing fixed to the side or ends of a vehicle to receive a stake or peg, and may also be used as an anchor point is a:
18.
A device placed between the deck of a vehicle and car or between articles of cargo, intended to provide greater friction than exists naturally between these surfaces is:
19.
When shifting you should do all of the following except:
20.
If you load cargo into the overhang portion of the trailer, what will be the result?
21.
Which of these statements about downshifting is true?
22.
Which of the following is not an acceptable method of containing loose parts when securing flattened or crushed vehicles?
23.
Securing heavy vehicles or equipment with crawler tracks or wheel requires a minimum of how many tiedowns?
24.
You are driving a truck with a manual transmission. What gear will you probably have to use to take a long, steep downhill grade?
25.
How long should it take oil pressure to come up to normal?
26.
Using the following numbers for your calculations, how much weight will come off your steer axle?


Miles per gallon: 7
Miles travelled: 280
Percenatage of fuel weight on steer axle: 80%
27.
Which of these statements about marking a stopped vehicle is true?
28.
The object of the pre-trip inspection is:
29.
Who must complete a log?
30.
You are driving a heavy vehicle. You must exit a highway using an off-ramp that curves downhill. You should:
31.
When activated, retarders apply braking power when:
32.
Why does vehicle speed naturally increase on a downgrade?
33.
Extra care is needed to keep your vehicle centered in your lane because commercial vehicles:
34.
Some large trucks have curved mirrors. These mirrors:
35.
What is the cargo's center of gravity?
36.
A minimum disqualification of 12 months will result for any driver who:
37.
A tractor trailer traveling 55 mph will travel how far between when the brain perceives a hazard and stopping?
38.
Which of these is not a type of retarder?
39.
When securing a metal coil with eyes lengthwise, all of the following are steps for securement option #1 except for:
40.
Which of the following are covered by the specific log securement requirements?
41.
You must drive on a slippery road. Which of these is a good thing to do in such a situation?
42.
You are required to inspect your truck within how many miles after beginning the trip?
43.
Which of the statements about backing a heavy vehicle is NOT true?
44.
If you were instructed to 'tarp' a load, what would you be using?
45.
What is the maximum angle recommended for tiedowns securing cement pipe loaded crosswise, relative to the deck?
46.
A major safety concern of a broken or faulty exhaust system is:
47.
Which of these is specifically prohibited when securing crushed or flattened vehicles?
48.
Within the requirements for concrete pipe, which of these requires specific securement methods?
49.
When securing concrete pipe up to 45 inches loaded crosswise, tiedowns through the pipe must be:
50.
If traveling slower than traffic flow on a grade, if legal you should: