Texas CDL General Knowledge Practice Exam

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Study for the Texas CDL General Knowledge Exam. Prepare with comprehensive questions and detailed explanations, empowering you to ace the test with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which of these statements about double clutching and shifting is true?

You can use the tachometer to tell you when to shift.
Double clutching is not necessary for manual transmission vehicles
Shifting gears quickly is always safer
Gear shifting should be done abruptly to save fuel

The correct answer is: You can use the tachometer to tell you when to shift.

When driving a manual transmission vehicle, the tachometer can help you determine the optimal time to shift gears. This is because the tachometer measures the engine's revolutions per minute (RPM), which can indicate when the engine is working too hard or idling too slowly. Option B is incorrect because double clutching can be helpful in some situations, such as when driving on a steep incline or when downshifting. Option C is incorrect because shifting gears too quickly can cause the vehicle to jerk and potentially lose control. And option D is incorrect because shifting gears abruptly can actually cause more fuel consumption and put unnecessary strain on the engine.