Class A Driving Test | Illinois 2025 #1 Page 5 of 7
Train for FREE online with our Illinois class A license test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a IL CDL class A permit in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that CDL class A requirements may vary from state to state.
29 . Water and compressor oil are usually found in the compressed air within an air brake system. Water and compressor oil:
Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Manually operated air tank drains must be opened daily to remove this build-up.
30 . Overloading a vehicle with cargo can affect all of the following, except:
Overloading can have negative effects on a vehicle's steering, braking and speed control.
31 . Why should rental trucks be approached with caution?
You should be cautious when driving near rental trucks because the people driving them may not be used to operating vehicles with limited views to the sides and rear. Drivers who cannot see others on the roadway are hazardous.
32 . A school bus driver may not operate a school bus with a minimum blood alcohol concentration (BAC) of:
It is illegal to operate a school bus if your blood alcohol concentration (BAC) is above 0.00 percent. Operating a bus with a BAC of any detectable amount may result in license disqualification.
33 . The maximum height permitted for all vehicles on Illinois highways is:
In Illinois, the height of any vehicle is limited to 13 feet, 6 inches. Height measurements are taken from the underside of the tire to the top of the vehicle, load included.
34 . When performing a pre-trip inspection, you should make sure that:
When checking your vehicle's pedals during a pre-trip inspection, you should ensure that there is nothing under or around the pedals that will obstruct their use. Make sure the pedals are in proper working condition and that the surfaces of the pedals are grooved, if applicable.
35 . Regardless the size of the cargo, it should be secured by at least ____ tie-down(s).
Cargo that is required to be tied down should be secured by at least one tie-down for every 10 feet of cargo length. However, at least two tie-downs should be used no matter how small the cargo is.
See the exact questions that will be on the 2025 Illinois DMV exam.
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