The CDL General Knowledge practice test covers topics such as the rules of having a CDL and driving a commercial vehicle safety. Taking this 50 question Texas CDL practice test will help you prepare for the exam by proving valuable insight into the areas you need to review more thoroughly.
1.
Which of the following should you NOT do?
2.
If you drive through heavy rain or standing water your brakes may get wet. What can this cause when you apply the brakes?
3.
You are driving on a straight and level roadway at 60 mph and suddenly a tire blows out on your vehicle. What should you do first?
4.
If you are aren’t sure that you have safe space to pass under an object, you should
5.
What is the purpose of a pre-trip inspection?
6.
Before entering a curve, you should
7.
It you are being tailgated you should
8.
The braking effect of the engine is greatest when
9.
What three factors add up to the total stopping distance for a commercial vehicle?
10.
When driving in fog, you should
11.
Which of the following statements about backing a commercial vehicle to a dock is NOT true?
12.
Use of alcohol can cause serious driving errors, including
13.
Shifting gears properly is important because
14.
As alcohol begins to build up in the body, which of the following is affected first?
15.
Drinking alcohol can affect your
16.
Which of the following happens when a tire blows at highway speed?
17.
While driving you are looking ahead of your vehicle. How should you be looking?
19.
Water will extinguish which of the following fires?
21.
According to the Commercial Driver’s manual, why should you limit the use of your vehicle’s horn?
22.
Controlled braking is used when
23.
Which of the following is true about rear drive wheel braking skids?
24.
Convex (curved) mirrors will
25.
Placarding, the use of hazardous material placards and labels, is an example of
26.
Can federal inspectors inspect your truck or bus?
27.
If you break down on a level, straight, four-lane, divided highway, where should you place the reflective warning triangles?
28.
Which of the following statements about causes of vehicle fires is true?
29.
Your vehicle is 40 feet long and you are traveling at 50 mph. The safe following distance is
30.
If a state or federal inspector judges that your vehicle is unsafe, they will put the vehicle out of service
31.
“Over-the-counter” medication used to treat the common cold
33.
Which of the following is true concerning cold weather driving?
34.
Which of the following is true about the use of reflective emergency triangles?
35.
Which of the following is true?
36.
Most serious skids are a result of
37.
When you are driving through construction zones, you should
38.
The Driver’s Manual says you should use your horn
39.
When traveling down a long downgrade, you should always
40.
When you are driving at night, you should
41.
When you see a hazard in the road in front of you, you should
42.
How many missing or broken leaves in a leaf spring will cause your vehicle to be placed out-of-service?
43.
When backing your vehicle, you should
44.
Which of the following statements is true?
45.
Bridge formulas are designed to
46.
Which of the following conditions may produce a skid?
47.
Why do hazardous materials regulations exist?
48.
When fighting a fire, which is most correct?
49.
The proper way to load a vehicle is
50.
Which of the following is a sign of drowsy driving
