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 is true about rear drive wheel braking skids?
2.
Which of the following conditions may produce a skid?
3.
Can federal inspectors inspect your truck or bus?
4.
It you are being tailgated you should
5.
When you are driving at night, you should
6.
Which of the following statements about causes of vehicle fires is true?
7.
The braking effect of the engine is greatest when
8.
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?
9.
When you see a hazard in the road in front of you, you should
10.
Water will extinguish which of the following fires?
11.
Which of the following statements about backing a commercial vehicle to a dock is NOT true?
12.
Shifting gears properly is important because
13.
Which of the following is a sign of drowsy driving
14.
What is the purpose of a pre-trip inspection?
15.
If you are aren’t sure that you have safe space to pass under an object, you should
16.
While driving you are looking ahead of your vehicle. How should you be looking?
17.
According to the Commercial Driver’s manual, why should you limit the use of your vehicle’s horn?
18.
When fighting a fire, which is most correct?
19.
When backing your vehicle, you should
20.
Which of the following happens when a tire blows at highway speed?
21.
Drinking alcohol can affect your
22.
If a state or federal inspector judges that your vehicle is unsafe, they will put the vehicle out of service
23.
Which of the following should you NOT do?
24.
Bridge formulas are designed to
25.
Which of the following is true about the use of reflective emergency triangles?
26.
If you break down on a level, straight, four-lane, divided highway, where should you place the reflective warning triangles?
27.
The proper way to load a vehicle is
28.
As alcohol begins to build up in the body, which of the following is affected first?
29.
When you are driving through construction zones, you should
30.
Convex (curved) mirrors will
31.
Which of the following statements is true?
32.
Which of the following is true concerning cold weather driving?
33.
Which of the following is true?
34.
Use of alcohol can cause serious driving errors, including
35.
When driving in fog, you should
36.
How many missing or broken leaves in a leaf spring will cause your vehicle to be placed out-of-service?
37.
Your vehicle is 40 feet long and you are traveling at 50 mph. The safe following distance is
38.
Controlled braking is used when
39.
If you drive through heavy rain or standing water your brakes may get wet. What can this cause when you apply the brakes?
40.
Placarding, the use of hazardous material placards and labels, is an example of
41.
What three factors add up to the total stopping distance for a commercial vehicle?
42.
The Driver’s Manual says you should use your horn
43.
When traveling down a long downgrade, you should always
45.
Why do hazardous materials regulations exist?
46.
Before entering a curve, you should
47.
Most serious skids are a result of
49.
“Over-the-counter” medication used to treat the common cold
