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.
You are driving at night and you must dim your headlights for traffic. Good speed management says you should:
2.
If you are stopped at a roadside rest area and found to have a BAC (Blood Alcohol Concentration) of 0.02 you will:
3.
Which of these statements about certain types of cargo is true?
4.
Which of the following systems should receive extra attention during winter weather inspection?
5.
Applying the brakes repeatedly on a downgrade to reduce speed 5 mph below your target is called:
6.
To stop a drive-wheel skid, you should:
7.
Retreaded, recapped, or regrooved tires are allowed on the front wheels of a bus when?
8.
What keeps an engine cool in hot weather driving?
9.
In case of illness that prevents you from driving safely, you should:
10.
What is the Federal Standard for maximum weight on a tandem axle vehicle?
11.
If you jam on the brakes and the wheels lock up and skid:
12.
When driving at night, you should:
13.
A left-hand turn should end:
14.
Sliding the 5th wheel will change the weight distribution almost exclusively between which sets of axles?
15.
When securing rows of coils, requirements include all of the following except:
16.
For safer night time driving, windshields and mirrors should be:
17.
When is it acceptable to use amphetamines to help you stay awake while driving?
18.
When securing building materials, how many knots are acceptable in the tiedown(s)?
19.
What factors typically determine your blood alcohol concentration BAC?
20.
While exiting the vehicle for a 'look', how many points of contact must you keep with the vehicle at all times?
21.
All vehicles or drivers must carry:
22.
Any operator who refuses to submit to drug or alcohol testing, or who tests in excess of the legal limits, will be disqualified for a minimum of:
23.
What is the maximum weight that can be secured by a tiedown with a marked WLL of 5,000 lbs?
24.
Rust around wheel nuts may indicate what?
25.
When making a right turn, all of the following are good technical practices except:
26.
Specific securement methods are required for boulders that:
27.
Which of these statements about cargo loading is true?
28.
The engine brake effect is greater when the engine is _____ governed RPM and the transmission is on a _____ gear.
29.
Which of these should you NOT do in an emergency situation?
30.
.5g is equal to what?
31.
You are driving on a straight, level highway at 50 mph. There are no vehicles in front of you. Suddenly a tire blew out of your vehicle, what should you do first?
32.
What should you do if you are unsure whether you have enough overhead clearance?
33.
An example of reckless driving is:
34.
Whenever possible, a row of metal coils with eyes vertical requires one direct tiedown to secure against rearward movement at what maximum angle?
35.
When banding paper rolls with eyes vertical, you should:
36.
Which of these statements about braking is true?
37.
What is the WLL of a 1/2-inch Grade 70 tiedown?
38.
In order to perform the in-cab and gauge inspection, which of the following must be done?
39.
"Brake fade" is:
40.
Which of the following has the greatest affect on the gross vehicle weight?
41.
Which of these is true about radiator shutters and the winter-front during winter driving?
42.
Overall length limit on vehicles transporting machinery, poles, or structural objects is:
43.
Can state inspectors inspect your truck or bus?
44.
What does emergency braking mean?
45.
What is the minimum WLL used to block forward movement of cargo weighing 36,500 lbs?
46.
While driving, the freight must not:
47.
You are driving on a two-lane road. An oncoming driver drifts into your lane and is headed straight for you. Which of these is most often the best action to take?
48.
You receive a scale ticket and your drive axles are 35,400 and your trailer tandems are 31,100. Based upon the two most common tandem slider rail hole spacings, what is the minimum number of holes you would have to slide the tandems to get the weight legal, and in which direction?
49.
Indirect tiedowns create what direction of force?
50.
According to the general rule, for how much space should you leave in front of your vehicle at speeds below 40 mph?