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.
The most important thing you can do when dealing with an aggressive driver is:
2.
When is it necessary to learn how a fire extinguisher works?
3.
Which of these statements about emergency steering is true?
4.
You are driving on a clear night. You must dim your headlights from high to low. You should adjust your speed so that you can stop within:
5.
When the roads are slippery, you should:
6.
Which of these is true about driving in a tunnel?
7.
If the cargo is fully contained in a sided vehicle, what is the minimum requirement for withstanding sideways force?
8.
Cargo with a high center of gravity:
9.
What is the aggregate WLL of one 7/15 inch Grade 43 chain, and three 5/16 inch Grade 70 chains?
10.
Making sure that the cargo is not overweight is the responsibility of:
11.
Vehicles exempt from Certificate of Safety inspection requirements include:
12.
What is a 34 hour restart?
13.
How many knots are acceptable in a properly working tiedown?
14.
For your safety, when setting out reflective triangles you should:
15.
Service brake stopping action should be tested at:
16.
Which statement below is true?
17.
The total weight of a powered unit, the trailer and the cargo is called?
18.
Another name for 'skid', a platform or tray on which cargo is placed so that it can be handled as an article.
19.
Load securement for cargo weighing 29,650 lbs must be able to withstand upward force of how many lbs?
20.
Which of these statements about double clutching and shifting is true?
21.
Drivers must inspect the securement of cargo every 150 miles or:
22.
The bridge formula:
23.
Which of the following require an additional CDL endorsement to drive?
24.
To secure paper rolls with eyes horizontally against rearward movement, you can use which of the following except:
25.
Steering wheel play should not be more than:
26.
Most skids:
27.
What is the Federal standard for the weight limit on a single axle?
28.
A dunnage bag is:
29.
A placarded vehicle must have how many identical placards?
30.
What happens if an EOBR malfunctions?
31.
The tread depth on front steering wheel tires should be:
32.
Option #3 for a single metal coil with eyes lengthwise requires:
33.
Which statement about EOBR's is true?
34.
When your vehicle is out of gear for more than its length, it will be scored as:
35.
To avoid an accident you moved to the shoulder. The shoulder is clear, you should:
36.
What happens to tar on the road pavement during hot weather?
37.
Given that general cargo securement requires a WLL of at least 50% of cargo weight, how many 11mm wire rope tiedowns would be required for a load of 26,000 lbs?
38.
Using the following numbers, what would be the final result if you moved the 5th wheel back one hole?

steer axle: 12,300 pounds
drive axles: 33,100 pounds
Weight transfer: 500 pounds per hole
39.
How many reflective triangles are required to be kept as part of a trucks emergency equipment?
40.
Which of these statements about acceleration is true?
41.
All of the following are concerns for driving on offramps or onramps except:
42.
If a straight vehicle (not trailer or articulation) goes into front-wheel skid, it will:
43.
What is the minimum aggregate WLL for a group of concrete pipe weighing 16,000 lbs?
44.
How much force is the securement system required to withstand in terms of cargo weight?
45.
The condition of all in-cab controls should be checked for:
46.
How long does it typically take a tractor-trailer to cross a single set of railroad tracks?
47.
When driving downhill, you should use the service brakes:
48.
What is a rub rail?
49.
A bulkhead is used:
50.
When securing concrete bell pipe in multiple complete tiers, all of the following are true except: