Illinois CDL School Bus Practice Test (IL) 2026

4.8 out of 5 (567 votes)
80% Passing score
20 Questions
4 Mistakes allowed
As an Illinoisan preparing to obtain your commercial driver's license with a school bus endorsement, you'll find our Illinois school bus practice test indispensable. This comprehensive driving test practice includes a diverse mix of questions essential for mastering the skills and knowledge required for the actual permit test. Covering vital topics such as safety procedures, pre-trip inspections, basic control skills, and on-road driving, the Illinois practice permit test ensures you're thoroughly prepared for every aspect of the examination. The format and content of our Illinois DMV practice test closely resemble the real permit test, helping you become familiar with the types of questions you'll encounter. This similarity not only aids in your understanding but also boosts your confidence as you approach the real test. Each Illinois school bus practice test consists of 20 multiple-choice questions, and to pass, you'll need at least 16 correct answers. This passing criterion mirrors the requirements of the actual permit test, making this Illinois school bus endorsement practice test an effective tool for your preparation. What sets our Illinois school bus practice test apart is the no-pressure environment it provides. Unlike the real written permit test, there's no stress or urgency here. You can take your time, learn at your own pace, and revisit any sections you find challenging. This stress-free approach allows for a more productive learning experience, helping you internalize the material without the anxiety of a timed test. Upon completing the Illinois CDL practice test, you'll have the opportunity to review your answers. This review includes hints and explanations for any questions you missed, offering valuable insights into areas where you may need further study. This feature enhances your learning and ensures you're better prepared for the actual test. Additionally, our Illinois school bus practice test educates you about the unique design and safety features of school buses. You'll learn why school buses are painted in National School Bus Glossy Yellow and understand the critical safety features that make them easily recognizable on the road. This knowledge is not only essential for passing the test but also for ensuring the safety of your future passengers.
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Sample Illinois School Bus Test Questions

Question 1

In Illinois, school bus drivers should remain familiar with applicable operating laws, safety rules and procedures.

  1. A TRUE
  2. B FALSE

Correct answer: A – TRUE

School bus drivers need a working knowledge of the laws and procedures governing safe bus operation. The state’s training rules require both an initial course and annual refresher training for school bus driver permit holders. Refresher training helps drivers maintain current knowledge rather than relying only on what they learned when first qualifying.

Source: Illinois CDL Study Guide — § 10.4.3, “Recommended Procedures”, 92 Ill. Adm. Code 1035.30 — Training

Question 2

During the vehicle inspection, what must you verify about the school bus entry door?

  1. A It swings freely, even if it does not latch
  2. B It operates only from a remote control
  3. C It closes securely only when checked from outside
  4. D It operates smoothly and closes securely from inside

Correct answer: D – It operates smoothly and closes securely from inside

The passenger entry door should be undamaged, operate smoothly and close securely from inside the bus. A door that does not close properly can create a hazard for passengers. The passenger-entry inspection also includes checking the handrails, steps, step light when equipped and the secure travel position of any passenger lift.

Source: Illinois CDL Study Guide — § 11.3, “School Bus Only—Passenger Entry/Lift”

Question 3

About how far before a railroad-highway crossing should a school bus driver activate the hazard lights?

  1. A 200 feet
  2. B 300 feet
  3. C 400 feet
  4. D 600 feet

Correct answer: A – 200 feet

Activate the hazard lights approximately 200 feet before reaching the crossing. This warns following traffic that the school bus is preparing to stop. The driver should also slow down, check surrounding traffic and follow the required procedures for stopping, looking and listening before proceeding across the tracks.

Source: Illinois CDL Study Guide — § 10.4.3, “Recommended Procedures”

Question 4

What should a school bus driver do when encountering strong crosswinds?

  1. A Accelerate to leave the windy area sooner
  2. B Maintain exactly 10 mph regardless of conditions
  3. C Avoid pulling off the roadway under any circumstances
  4. D Grip the steering wheel firmly and anticipate gusts

Correct answer: D – Grip the steering wheel firmly and anticipate gusts

Strong winds can push a school bus sideways and may cause a loss of control or rollover in extreme conditions. Keep a firm grip on the steering wheel and anticipate changing gusts. Slow down to reduce the wind’s effect; if conditions are unsafe, pull off the roadway at a safe location and wait for conditions to improve.

Source: Illinois CDL Study Guide — § 10.7.2, “Driving in High Winds”

Question 5

What should properly adjusted outside crossover mirrors show?

  1. A The rear tires touching the ground and the rear bumper
  2. B The front danger area, both front tires and the area beside the service door
  3. C Both sides of the bus from the front bumper to the rear axle
  4. D Only the traffic lane immediately ahead of the bus

Correct answer: B – The front danger area, both front tires and the area beside the service door

Crossover mirrors are used to observe the danger zone immediately in front of and beside the school bus. They should show the area from the front bumper at ground level to where direct vision begins, both front tires touching the ground and the area from the front of the bus to the service door. They are not intended to show the rear tires.

Source: Illinois CDL Study Guide — § 10.1.3, “Outside Left and Right Side Crossover Mirrors”

Question 6

When unloading students at school, the driver must remove the ignition key only when leaving the driver’s compartment.

  1. A TRUE
  2. B FALSE

Correct answer: A – TRUE

When unloading at school, the driver should secure the bus by turning off the ignition. The key is removed if the driver will leave the driver’s compartment. Removal is not stated as necessary every time students unload while the driver remains in control at the driving position.

Source: Illinois CDL Study Guide — § 10.2.4, “Unloading Procedures at School”

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