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View All PlansAs you prepare to take your Idaho DMV written knowledge test, it would be wise to spend some time studying road signs. Much like the “Do Not Feed The Wildlife” signs you see around Yellowstone Bear World, road signs keep you safe and informed. Road signs help you obey road rules, warn about upcoming road situations, and provide valuable information about directions to destinations and the location of available services. Failure to demonstrate your understanding of road signs may cause you to fail the knowledge test.
Our free Idaho DMV Road Signs practice test will prepare you for the challenges of these questions on your official knowledge test. You should start by learning to recognize the various shapes and colors of these signs, which provide clues to their messaging. Regulatory signs (e.g., Speed Limit) alert you to a road rule. Warning signs (e.g., Lane Ends) warn you about upcoming road situations. Guide signs (e.g., Food) provide information about your location, directions, special points of interest, and available services. Construction signs (e.g., Lane Shift) safely guide you through work zones.
While there are many on-line resources you may choose to help you study for your official knowledge test, our Road Signs practice test is the most comprehensive. The practice test is based on the most recent Idaho DMV driver’s manual (Idaho DMV Handbook (ID Driver's Manual) 2025) and is up to date as of October 2025. It includes 50 multiple-choice questions with pictures of various road signs for you to identify and interpret. An important feature of the practice test is that it is interactive and provides feedback, helping you make a connection between the question and the answer. If you get a question wrong, a detailed explanation of the correct answer is provided. This approach is more advantageous than using a study guide. A study guide is designed to help you merely memorize the answers to the questions without providing the reasoning behind them. The practice test equips you with the confidence and skills you need to pass your official knowledge test and apply them to your driving habits. You will see the benefits of the practice test immediately. Rest assured that there is no better resource for developing excellent driving skills.
The Smurf Turf in Boise revolutionized the look of a football field, and you can find innovative practice tests for other U.S. states and Washington D.C. at https://driving-tests.org/academy/drivers-license.
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Last verified for accuracy: October 2025 (reviewed weekly)
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