Free Idaho CDL General Knowledge Practice Test 2023

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 2021 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
One can recognize hazardous materials by looking on the container:
You must drive through deep or flowing water, you should not:
What violation occurs on the below example?
Day 1

Day 2
When securing concrete pipe over 45 inches loaded crosswise, which direction must the tiedowns on the rear half of the load run?
"According to the driver’s manual, why should you limit the use of your horn?"
What should you do before driving in mountains?
"The driver’s manual suggests several things to do when you pass a vehicle. Which of these is NOT one of them?"
A stack of shortwood loaded lengthwise can be secured with one tiedown if:
You're in Illinois which allows up to 20,000 pounds on the steer axle. You're heading to Indiana which only allows 12,000 on the steer axle. Your steer tires have a load rating of 6,500 pounds each. What is the maximum legal weight your steer axle can be for each of the two states?
Based on the following information, how much fuel can you legally add while remaining legal on the drive axles?

Percentage of fuel weight to drive axles: 25%

Weight Before Fueling: Steer: 11,275, drives: 33,800, gross: 77,420

How many on duty hours are remaining after the following has been logged (use a scratch sheet of paper if you need to):
- On duty/not driving: 3 hours
- Driving: 4 hours
- Sleeper berth: 8 hours
- Driving: 7 hours
- Off duty: 2 hours
The Aggregate Working Load Limit should, at minimum, be:
You receive a scale ticket and your drive axles are 35,700 and your trailer tandems are 30,600. Based upon a trailer with 4 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?
After an accident, you should only move a severely injured person:
For safer night time driving, windshields and mirrors should be:
A container chassis vehicle is defined as:
How many violations occur on the below example?
Day 1

Day 2
Load securement for cargo weighing 29,650 lbs must be able to withstand upward force of how many lbs?
When should you test your parking brakes?
You are driving a truck with a manual transmission. What gear will you probably have to use to take a long, steep downhill grade?
Which of the following is not an acceptable method of containing loose parts when securing flattened or crushed vehicles?
When securing concrete pipe loaded crosswise, arrange the top tier:
How many violations have occurred on the below log?
Which of the following require an additional CDL endorsement to drive?
What is the minimum WLL required of tiedowns securing loaded intermodal containers on non-chassis vehicles?
Specific securement methods are required for boulders that:
You should try to park so that:
When securing a non-cubic boulder with an unstable base, the four surrounding chains must have a WLL of at least:
A placarded vehicle must have how many identical placards?
You are driving on a straight, level highway at 50 mph. There are no vehicles in front of you. Suddenly a tire blew out of your vehicle, what should you do first?
Communication means:
Which of the following is not a requirement of wood used as blocking or bracing?
When you are starting to move up a hill from a stop:
A traffic emergency requires you to escape to the shoulder or roadside. If possible, slow down to ____ mph before using your brakes.
If an oncoming vehicle drifts into your lane you should:
You must stop on a hill or curve on a two-lane-two-way road. How far should you place reflective triangles?
Cargo securement for a load weighing 37,000 lbs must be able to withstand a minimum forward braking force of:
Which of these is the proper signal to change lane?
Specific parts of the CDL driving and skills exam include which of the following?
A good inspection habit is for the driver to re-inspect the cargo:
When checking the general condition of the vehicle, which of the following should be specifically addressed?
If you hear on the radio that there is a major snowstorm forecast along your route, will you qualify for the Adverse Driving Conditions Exception?
Which statement below is false?
What is bell pipe concrete?
You should always turn on your emergency four-way flashers when you:
The maximum number of encroachments allowed on a particular exam exercise is:
When securing a paper roll with a width that is more than twice its diameter, which of the following is not an acceptable method of securement to prevent tipping?
Sliding your 5th wheel will redistribute the weight mainly between which two sets of axles?
Shifting gears on most heavy vehicles using manual transmissions will require:
Submitting fingerprints for a background check will be required for drivers applying for: