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.
Which of these is the best general rule for night driving?
2.
What is the minimum WLL of each tiedown used to secure crushed or flattened vehicles?
3.
In case of low friction between the cargo and deck, which of these is not a solution?
4.
Perception distance is the distance your vehicle travels from the time:
5.
All of the following are requirements for dividing vehicles over 33ft except:
6.
The cargo securement standard applies to commercial vehicles weighing more than:
7.
Which day below contains at least 1 violation?
Day 1

Day 2
8.
What is the maximum blood-alcohol concentration allowed for operating a school bus?
9.
Proper fire prevention should include paying attention to all of these except:
10.
If your vehicle catches fire while you are driving, you should:
11.
To prevent rolling, how many points of contact are required, at minimum, for a boulder resting on a rounded or partially rounded side?
12.
Freeway exits can be dangerous for commercial vehicles, at what speed should you enter the exit?
13.
You are traveling down a long, steep hill. Your brakes get so hot that they have failed. What should you do?
14.
Which of the following is considered on duty time
15.
All of the following apply to farm vehicle operator CDL exemption except:
16.
Rims with welding repairs or missing lugs:
17.
In cargo securement, bracing is:
18.
Your vehicle will be put out of service if ____ or more leaves in any leaf spring are missing.
19.
When driving through the work zone you should:
20.
EOBR's are required to automatically record which of the following?
21.
Drivers who have trouble sleeping at night, fall asleep at odd times, or snore loudly, gasp, and choke in their sleep should:
22.
A combination of securing devices which form an assembly that attaches cargo to, or restrains cargo on, a vehicle or trailer, and is attached to anchor point(s) is a:
23.
Why did Congress enact the Bridge Formula in 1975?
24.
The condition in which water or slush collects on the road and your tires lose contact and have little or no traction is called:
25.
In addition to preventing engine freezing, proper coolant levels help:
26.
What is a cab shield?
27.
Which of the following vehicles will have the longest stopping distance?
28.
Any activity that draws your attention to something other than the task of driving is considered:
29.
What should you do if a car coming toward you at night keeps its high beams on?
30.
You are driving a heavy vehicle with a manual transmission. You have to stop the vehicle on the shoulder while driving on an uphill grade. Which of these is a good rule to follow when putting it back in motion up the grade?
31.
What is the minimum requirement for securing roll-off and hook containers?
32.
Which of these is true about hauling hazardous materials?
33.
A traffic emergency requires you to escape to the shoulder or roadside. If possible, slow down to ____ mph before using your brakes.
34.
If a CDL-holder's privilege to drive non-CMV's is revoked or suspended more than once for alcohol, felony, or controlled substance violations, the CDL will be disqualified for:
35.
What is a pallet used for?
36.
When crossing railroad tracks in a placarded vehicle or a bus:
37.
Make sure that splash guards are properly fastened, and not:
38.
During the Stop/Start maneuver, when stopped, your vehicle:
39.
When you are parked on the side of the road at night you must:
40.
Which of the following techniques will not change the weight distribution across your axles?
41.
A good inspection habit is for the driver to re-inspect the cargo:
42.
When a tiedown is attached directly to the cargo, what is the ideal angle where it attached to the vehicle?
43.
Which of these statements about staying alert to drive is true?
44.
The value specified by the manufacturer as the loaded weight of a combination vehicle is?
45.
Which of these lights cannot be checked at the same time?
46.
Specific hazards to watch for when traveling through work zones include:
47.
The narrowest end of a boulder should be pointed:
48.
Some suggestions for reducing stress and aggressiveness while driving might include all of the following except:
49.
In terms of cargo securement, what is a 'well'?
50.
Which of the following will alter the gross vehicle weight?