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.
When using the brakes on a steep downgrade, which of the following applies?
2.
The best drivers are those who watch and prepare for hazards. This is called _________ driving.
3.
Turn signals facing the front should be amber or:
4.
Define 'bolster':
5.
Which of these statements about alcohol is NOT true?
6.
Which of the following can be used as part of the cargo securement system?
7.
Methods to keep a cradle from sliding include:
8.
Hazmat placards are what shape?
9.
Which violation occurs on the below example?
10.
When approaching a railroad crossing, which of these safety precautions applies?
11.
ABS malfunction lights will be what color?
12.
The maximum weight limit on a single axle is:
13.
All of the following are requirements for transporting coils with eyes crosswise except:
14.
By definition, what is a wedge?
15.
Is the below example a completed 34 hour restart?
Day 1

Day 2

16.
Which of these statements about drugs is true?
17.
Which of the following statements about speed management is true?
18.
Ideally, where would you like the cargo's center of gravity located?
19.
You receive a scale ticket and your drive axles are 31,700 and your trailer tandems are 35,100. Based upon a trailer with 6 inch slider rail hole spacings, what is the minimum number of holes you would have to slide the tandems to get the weight legal, and what would the final weights be?
20.
While driving through an intersection, you should:
21.
When securing paper rolls on a flatbed or curtainside vehicle, it is acceptable to stack rolls with eyes vertical:
22.
What is the safe number to use in calculations for the weight of fuel?
23.
What does EOBR stand for?
24.
You must keep the papers about hauling hazardous materials:
25.
A car suddenly cuts in front of you, creating a hazard. Which of these actions should you NOT take?
26.
In cargo securement, the deck is:
27.
When securing a non-cubic boulder with an unstable base, the four surrounding chains must have a WLL of at least:
28.
Escape ramps:
29.
If you are convicted for driving under the influence while driving a commercial vehicle, and this is your first offense, you most likely will get:
30.
You may hang up on a railroad track if:
31.
What are the two most common tandem slider rail hole spacings, and roughly how much weight is transferred per hole?
32.
After starting the engine:
33.
The best way to take a curve is to slow to a safe speed before entering the curve, then __________ as you go through it.
34.
Based on the following figures, how much fuel can you legally add while remaining legal on the steer axle?

Load rating of steer tires: 6,150 pounds

Percentage of fuel weight to steer axle: 85%

Steer axle weight limit in states you're travelling: 20,000 pounds

Weight Before Fueling: Steer: 11,500, drives: 33,100, gross: 76,700

35.
Should brake adjustment be checked often?
36.
Sliding your trailer tandems forward or backward will redistribute the weight mainly between which two sets of axles?
37.
What is the minimum aggregate WLL of all tiedowns in a group of concrete pipe?
38.
When you see a pedestrian or bicyclist along the road you should:
39.
When securing metal coils in a sided vehicle without anchor points:
40.
Specific parts of the CDL driving and skills exam include which of the following?
41.
Which statement below accurately describes the 11 hour driving limit?
42.
Is the following example within legal HOS limits?

- A trucker starts driving at 12:00pm
- At 5pm the driver takes a 1 hour break
- At 6pm the driver begins driving again
- At 11:30pm, the driver shuts down and goes off duty for 10 consecutive hours
43.
Minimum tread depth on every groove on all tires must be at least:
44.
To adjust driving space to slippery conditions, all of the following are space considerations except:
45.
When driving with ABS, remember:
46.
What can be the result of too much weight on the back of the trailer?
47.
What is true about bad weather and driving conditions?
48.
Which of these is the most important thing to remember about emergency braking?
49.
Which of these is NOT a good rule to follow when caring for injured persons at an accident scene?
50.
When securing paper rolls with eyes crosswise, which of the following can be used to prevent side-to-side shifting when there is more than 8 inches of space to the wall?