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.
A vehicle is loaded with very little weight on the drive axle. What may happen?
2.
Which of these is NOT a good thing to do when driving on slippery roads?
3.
What does HOS stand for?
4.
Which may be a sign of tire failure?
5.
Which of these statements about backing a heavy vehicle is true?
6.
The BAC (Blood Alcohol Concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is:
7.
What should be true about other drivers:
8.
When using stab braking, all of the following are steps except
9.
When making a left turn, you should do which of the following?
10.
Why Do HOS Regulations Exist?
11.
What does the 14 hour on duty limit mean?
12.
To stop a drive-wheel skid, you should:
13.
You should lightly apply your brakes to flash the brake lights if:
14.
When securing a load of lengthwise longwood logs weighing 42,500 lbs, what is the minimum aggregate WLL required for tiedowns? (rounded up to nearest lb)
15.
What is the aggregate WLL of one 7/15 inch Grade 43 chain, and three 5/16 inch Grade 70 chains?
16.
Escape ramps on downgrades:
17.
The maximum weight limit on a single axle is:
18.
You should be prepared to the examiner:
19.
On which of the below logs did a violation occur?

Day 1



Day 2

20.
Which of the statements about pre-trip inspection is true?
21.
Which of the following are not a primary factor affecting weight distribution across the axles?
22.
The distance that you should look ahead of your vehicle while driving amounts to about ___ miles at normal highway speed.
23.
What is the main factor affecting the low-speed offtracking of a tractor trailer?
24.
To prevent brake fade you should:
25.
Most serious skids result from:
26.
The total weight of a powered unit, the trailer and the cargo is called?
27.
What happens if you spend 8 hours in the sleeper berth?
28.
All of the following apply to farm vehicle operator CDL exemption except:
29.
A school bus endorsement is required in order to transport:
30.
To secure paper rolls with eyes horizontally against rearward movement, you can use which of the following except:
31.
Using the following numbers for your calculations, how much weight will come off your steer axle?


Miles per gallon: 7
Miles travelled: 280
Percenatage of fuel weight on steer axle: 80%
32.
What is the Federal standard for the weight limit on a single axle?
33.
You weigh the truck immediately before and after fueling. Based on the following, determine what percentage of the weight goes to each set of axles:

Before fueling:

steer: 11,100, drives: 32,600, gross: 71,400

After fueling:

steer:11,850, drives: 32,850, gross: 72,400

34.
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:
35.
When you are passing a vehicle, pedestrian, or bicycle you should assume that:
36.
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

37.
Option #3 for a single metal coil with eyes lengthwise requires:
38.
A minimum disqualification of 12 months will result for any driver who:
39.
When going down a long steep downgrade you should always:
40.
What are the two primary laws governing the placement of the tandems?
41.
Some common causes of vehicle fires are spilled fuel, improper fueling, under-inflated tires, and:
42.
You must drive on a slippery road. Which of these is a good thing to do in such a situation?
43.
Vehicles should be equipped with all of the following emergency equipment except:
44.
Which of these items is NOT checked for a pre-trip inspection?
45.
Which of these statements about tires and hot weather driving is true?
46.
Methods of securing building materials against forward motion include:
47.
Which of these lights cannot be checked at the same time?
48.
What kind of extinguisher should be used on burning paper, wood, or cloth?
49.
Some of the serious driving errors that can be caused by alcohol include:
50.
When securing a single metal coil with eyes vertical: