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.
Bridge formulas are designed to
3.
Your vehicle is 40 feet long and you are traveling at 50 mph. The safe following distance is
4.
Which of the following is a sign of drowsy driving
5.
Placarding, the use of hazardous material placards and labels, is an example of
6.
When you are driving through construction zones, you should
7.
Which of the following statements is true?
8.
If you break down on a level, straight, four-lane, divided highway, where should you place the reflective warning triangles?
9.
Which of the following statements about backing a commercial vehicle to a dock is NOT true?
10.
If you drive through heavy rain or standing water your brakes may get wet. What can this cause when you apply the brakes?
11.
Why do hazardous materials regulations exist?
12.
Which of the following is true concerning cold weather driving?
13.
Convex (curved) mirrors will
14.
Which of the following should you NOT do?
15.
What is the purpose of a pre-trip inspection?
16.
As alcohol begins to build up in the body, which of the following is affected first?
17.
Which of the following is true about the use of reflective emergency triangles?
18.
While driving you are looking ahead of your vehicle. How should you be looking?
19.
The Driver’s Manual says you should use your horn
20.
Which of the following is true?
21.
Most serious skids are a result of
22.
When you are driving at night, you should
24.
When backing your vehicle, you should
25.
Which of the following conditions may produce a skid?
26.
Controlled braking is used when
27.
Water will extinguish which of the following fires?
29.
When driving in fog, you should
30.
If you are aren’t sure that you have safe space to pass under an object, you should
31.
Before entering a curve, you should
32.
The proper way to load a vehicle is
33.
According to the Commercial Driver’s manual, why should you limit the use of your vehicle’s horn?
34.
How many missing or broken leaves in a leaf spring will cause your vehicle to be placed out-of-service?
35.
When fighting a fire, which is most correct?
36.
When you see a hazard in the road in front of you, you should
38.
Which of the following statements about causes of vehicle fires is true?
39.
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?
40.
Can federal inspectors inspect your truck or bus?
41.
“Over-the-counter” medication used to treat the common cold
42.
It you are being tailgated you should
43.
The braking effect of the engine is greatest when
44.
Drinking alcohol can affect your
45.
When traveling down a long downgrade, you should always
46.
Use of alcohol can cause serious driving errors, including
47.
Which of the following happens when a tire blows at highway speed?
48.
What three factors add up to the total stopping distance for a commercial vehicle?
49.
Shifting gears properly is important because
50.
If a state or federal inspector judges that your vehicle is unsafe, they will put the vehicle out of service
