FREE Double Triple Test Online | Indiana 2024 Page 3 of 3
Train for FREE with our Indiana CDL double triple practice test online. 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 IN CDL double triple license in 2021, 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 DMV requirements may vary from state to state.
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15 . How many daily hours of sleep does an adult need to maintain alertness?
Four to five
Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need eight to nine hours of sleep per night.
16 . When making a trip at night, you should do all of the following, except:
Do a complete vehicle inspection before driving.
To help ensure that you can see properly at night, do not wear sunglasses. If you wear corrective eyeglasses, make sure they are clean and unscratched. Get adequate sleep before your trip to help you avoid becoming fatigued. As always, do a complete inspection of your vehicle, paying particular attention to lights and reflectors.
17 . A cardboard box on the roadway:
Should be avoided by driving off the roadway.
Any foreign object on the road is potentially dangerous. For example, something seemingly harmless, such as a cardboard box or paper sack, could contain a hard or heavy object that could do serious damage to a vehicle.
18 . A driver can maintain alertness by:
Having another person ride with them.
To maintain alertness while driving, strategies include wearing sunglasses to reduce eye strain; maintaining a cool temperature inside the cab; avoiding heavy foods; and traveling with someone else who can share the responsibilities of driving.
19 . A low air pressure warning signal should activate:
When tank pressure falls below 5 psi.
In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 55 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
20 . Good vision:
Is not essential to safe driving.
