Free Idaho CDL General Knowledge Practice Test 2022

You are looking for an actual Idaho CDL practice test source for your coming CDL test? So you have come to the right place. Our ID General Knowledge Practice Test has the same questions as the real exam which is based on the Idaho CDL manual. Our test covers most of the subject areas on the Idaho 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 CDL practice test pack 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 ID commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
ID CDL General Knowledge Test format:
50 questions
40 correct answers to pass
80% passing score
List of questions
1.
You are driving on a slippery road during the day. What does the Driver’s manual say about how much space you should keep ahead of your truck?
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.
Why is it important to shift gears correctly?
4.
Placing a phone call while driving:
5.
At what time does a violation occur on this log?
6.
Which of these is not a brake check you normally do during your walk-around inspection?
7.
When is it a good idea to use drugs to help you stay awake while driving?
8.
What is the maximum blood-alcohol concentration allowed for operating a school bus?
9.
The aggregate WLL for logs loaded lengthwise must be at least:
10.
Proper fire prevention should include paying attention to all of these except:
11.
By definition, what is a wedge?
12.
Which of these is true about notifying the authorities after an accident occurs?
13.
All of the following are lighting requirements for combination vehicles longer than 20 feet or wider than 80 inches except:
14.
In case of which fires can you use water to put it out?
15.
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:
16.
When securing metal coils with eyes vertical, the angle between tiedown and deck, if possible, should be:
17.
Which of the following is considered on duty time
18.
It is accepted that friction mats provide a resistance to horizontal movement equal to:
19.
The 14 hour limit can be extended by:
20.
If you are driving while sleepy, the safest remedy is:
21.
Drivers must inspect the securement of cargo every 150 miles or:
22.
When securing paper rolls with eyes horizontal, which of the following should be used to secure the rear-most roll?
23.
Which day on the example below contains a violation?
Day 1

Day 2
24.
The object of the pre-trip inspection is:
25.
What violation has occurred at 10:00 a.m. on Day 2?
Day 1

Day 2
26.
The engine brake effect is greater when the engine is _____ governed RPM and the transmission is on a _____ gear.
27.
If you must cross into the oncoming lane to make a turn, you should:
28.
What is the main factor that will limit how far back you can slide your tandems?
29.
Which of these should you NOT do in an emergency situation?
30.
What should you do if you are unsure whether you have enough overhead clearance?
31.
When confronted with an aggressive driver, you should do all of the following except:
32.
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?
33.
When calculating directional forces, 'g' is expressed as:
34.
Some large trucks have curved mirrors. These mirrors:
35.
A combined Tank vehicle & hazardous material endorsement will be designated with what letter on the CDL?
36.
What is a pallet used for?
37.
When your vehicle is out of gear for more than its length, it will be scored as:
38.
When backing, all of the following are important safety rules:
39.
An intermodal container is:
40.
The most common cause of skids is:
41.
When entering and exiting an expressway, and also generally any time you drive, you should:
42.
Putting too much weight towards the rear may cause all of these except:
43.
Some causes of fuel fires include improper fueling, driver smoking, and:
44.
Sharp pavement drop-offs:
45.
Low-beam headlights generally light to a distance of:
46.
A Class A CDL is required to drive a combination vehicle of over 26,001 lbs towing a vehicle weighing:
47.
Which of these is NOT a good rule to follow when caring for injured persons at an accident scene?
48.
Which of these is the most important thing to remember about emergency braking?
49.
The pre-trip inspection should show that the exhaust system is:
50.
The purpose of hazmat rules includes all of these except: