117. You are driving on a straight, level highway at 50 mph. There are no vehicles in front of you. Suddenly a tire blows out on your vehicle. What should you do first?
Detailed Explanation
The correct answer is "Stay off the brake until the vehicle slows down on its own.". This question tests wheel-end inspection, tire condition, and the correct response to defects or failure. This is a number-based rule, so connect the value to the situation instead of memorizing the number by itself.
Correct Answer: Stay off the brake until the vehicle slows down on its own.
Why This Matters on the CDL Test
Use this as part of your General Knowledge review. The real CDL knowledge test rewards drivers who understand the reason behind each rule, not only the answer letter, so read the explanation and then try a few related questions.
How to Remember It
Say the rule in your own words, then explain why the wrong answers are unsafe or incomplete. That habit makes similar General Knowledge questions easier when the exam changes the wording.
Answer Review
Choose "Stay off the brake until the vehicle slows down on its own." because this answer matches the safe CDL action for tire inspection and failure response. On the knowledge test, the safest answer is usually the one that protects space, control, visibility, legal compliance, or inspection accuracy before the vehicle is put at risk.
Why the other answers are weaker
- Begin light braking."Begin light braking." does not best answer this tire inspection and failure response question. When you see a similar option on the CDL permit test, compare it against the exact safety rule and choose the answer that prevents the most immediate risk.
- Begin controlled or stab braking."Begin controlled or stab braking." does not best answer this tire inspection and failure response question. When you see a similar option on the CDL permit test, compare it against the exact safety rule and choose the answer that prevents the most immediate risk.
Test-Day Checklist
- Read the question once for the topic, then read it again for the exact CDL action being tested in General Knowledge.
- Eliminate answers that sound convenient but skip an inspection, warning sign, or safety step.
- Say the correct rule out loud before moving on so you can recognize it when the exam changes the wording.
Ready to practice for real?
Take our free, full-length General Knowledge practice test. Simulates the actual DMV exam with timed questions.
Start Practice TestRelated Questions
131. You must park on the side of a level, straight, four-lane, divided highway. Where should you place the three reflective triangles?
101. If you are convicted for driving under the influence while driving a commercial vehicle, and this is your first offense, you will most likely get:
2. You are driving a 40-foot vehicle at 35mph. The road is dry, and visibility is good. What is the least amount of space you should keep in front of your vehicle to be safe?
243. The distance you should look ahead while driving at highway speeds.
246. You are driving a heavy vehicle and must exit a highway using an off-ramp that curves downhill. You should:
Keep Studying General Knowledge
Question pages help you review one rule at a time. To build test-day speed, move back into the full General Knowledge practice test and answer a mixed set without looking at the explanation first.
State CDL Practice Paths
After you understand this answer, use a state practice path to connect the federal CDL rule with the DMV test pages drivers search for most.