Knowledge Test Class A #2
Class A Driving Test | Massachusetts 2025 #2 Page 4 of 7
Train for FREE online with our Massachusetts 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 MA 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.
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22 . Cargo on flatbed trailers should be:
Pushed to one side.
On flatbed trailers or trailers without sides, cargo must be tied down to keep it from shifting or falling off in transit.
23 . Which of the following is a characteristic of a potentially fatigued driver?
They drive during the day.
Driving alone for long distances can put you at greater risk of becoming fatigued. Strategies for reducing the risk of fatigue include getting eight to nine hours of sleep at night, taking regular rest breaks, and driving during hours when you are normally awake.
24 . An underloaded front axle:
Is discouraged as it can improve fuel efficiency.
Underloading a front axle may make it impossible to safely steer your vehicle. Keep weight distribution in mind when loading cargo.
25 . Poisonous fumes can enter the cab due to:
Under-inflated tires.
Defects in an exhaust system are very dangerous because they can cause poisonous fumes to enter the cab or sleeper berth.
26 . When the spring brakes are activated in a vehicle with air brakes, you should never:
Open the trailer doors.
In a vehicle with air brakes, never push the brake pedal down when the spring brakes are activated. The combined force of the springs and the pressure of the air brakes could damage the brakes.
27 . After starting the engine, oil pressure should reach a normal level:
Within 10 minutes of driving.
After you start the engine, keep an eye on the gauges. Oil pressure should rise to a normal level within a few seconds of the engine being started.
28 . If one air system in a dual air brake system is very low on pressure:
Lights on the outside of the tractor will flash.
