Mississippi: Signals and vehicle controls — Part 5 Practice Test
Questions in this part include: “How many red reflectors must a truck-trailer have on the rear?” · “When should a truck driver check the tires, lights, brakes, and load?”
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Questions are original and based on the official manual "Mississippi Driver's License Manual" (Revised December 2024), Mississippi Department of Public Safety, Driver Service Bureau.
All 18 questions in this practice test
Take the test above first, then use this list to study. Tap “Show answer” to see the correct answer and explanation.
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How many red reflectors must a truck-trailer have on the rear?
- One
- Three
- Four
- Two
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Correct answer: Two
The manual says you must have two red reflectors on the rear, along with a red taillight.
Source: Mississippi Driver's License Manual (Revised December 2024), page 84 · Open this page in the manual (Manual page 84)
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What color may the stop light of a company truck show when the foot brake is applied?
- Red or amber
- White or red
- Amber only
- Green or amber
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Correct answer: Red or amber
When the foot brake is applied, the stop light must show a red or amber color.
Source: Mississippi Driver's License Manual (Revised December 2024), page 84 · Open this page in the manual (Manual page 84)
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A truck-trailer's stop light may be incorporated with which other light?
- The headlight
- The clearance lamp
- The taillight
- The side-marker lamp
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Correct answer: The taillight
The manual says the stop light may be incorporated with the taillight.
Source: Mississippi Driver's License Manual (Revised December 2024), page 84 · Open this page in the manual (Manual page 84)
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When lighted, what color must the clearance and side-marker lamps display on or near the front of the trailer?
- Red
- Amber
- White
- Blue
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Correct answer: Amber
Clearance and side-marker lamps display amber on or near the trailer's front and red on or near the rear.
Source: Mississippi Driver's License Manual (Revised December 2024), page 84 · Open this page in the manual (Manual page 84)
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When lighted, what color must the clearance and side-marker lamps display on or near the rear of the trailer?
- Amber
- White
- Green
- Red
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Correct answer: Red
Clearance and side-marker lamps display red on or near the rear and amber on or near the front of the trailer.
Source: Mississippi Driver's License Manual (Revised December 2024), page 84 · Open this page in the manual (Manual page 84)
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What kind of device must a company truck-trailer have for giving turn signals?
- A mechanical or electrical device
- Arm signals given by the driver
- A horn signal sounded twice
- A flashing light on the cab roof
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Correct answer: A mechanical or electrical device
The manual requires a mechanical or electrical device for giving turn signals.
Source: Mississippi Driver's License Manual (Revised December 2024), page 84 · Open this page in the manual (Manual page 84)
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A vehicle designed or loaded so the driver's rear view is blocked must have a side mirror that lets the driver see at least how far to the rear?
- One hundred feet
- Three hundred feet
- Two hundred feet
- Five hundred feet
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Correct answer: Two hundred feet
A vehicle with an obstructed rear view must have a side mirror located so the driver can see at least two hundred feet to the rear.
Source: Mississippi Driver's License Manual (Revised December 2024), page 84 · Open this page in the manual (Manual page 84)
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Which device may a company truck NOT use on its muffler?
- A stop light combined with the taillight
- A muffler cutout
- A side mirror
- An electric turn signal
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Correct answer: A muffler cutout
The manual says the muffler must be in good working condition and you may not use a muffler cutout, bypass, or similar device.
Source: Mississippi Driver's License Manual (Revised December 2024), page 84 · Open this page in the manual (Manual page 84)
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When should a truck driver check the tires, lights, brakes, and load?
- Only before the trip begins
- Once a day
- Only when something sounds wrong
- During each stop
Show answer
Correct answer: During each stop
The manual says to check all your equipment, such as tires, lights, brakes, and load during each stop.
Source: Mississippi Driver's License Manual (Revised December 2024), page 87 · Open this page in the manual (Manual page 87)
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When must you turn off the ignition of a truck carrying gasoline, oil, or explosives?
- Only when the truck is parked for the night
- Only when crossing railroad tracks with no signals
- When you put gasoline in the tank or unload the truck
- Only when driving through business districts
Show answer
Correct answer: When you put gasoline in the tank or unload the truck
The manual says to turn off the ignition when you put gasoline in the tank or unload the truck.
Source: Mississippi Driver's License Manual (Revised December 2024), page 87 · Open this page in the manual (Manual page 87)
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When may you smoke on or near a truck carrying gasoline, oil, or explosives?
- Only while unloading
- At no time
- Only with the windows closed
- Only when the engine is off
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Correct answer: At no time
The manual says not to smoke at any time on or near a truck carrying gasoline, oil, or explosives.
Source: Mississippi Driver's License Manual (Revised December 2024), page 87 · Open this page in the manual (Manual page 87)
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Where should you keep out of as often as possible when driving a truck carrying gasoline, oil, or explosives?
- Business districts and heavy traffic
- Rural highways and open country roads
- Interstate highways and toll roads
- Left lanes and passing zones
Show answer
Correct answer: Business districts and heavy traffic
The manual says to keep out of business districts and heavy traffic as often as possible with such a load.
Source: Mississippi Driver's License Manual (Revised December 2024), page 87 · Open this page in the manual (Manual page 87)
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Where should you park a truck carrying gasoline, oil, or explosives, when possible?
- Beside other trucks
- Close to buildings for protection
- Away from buildings and other vehicles
- Under an overpass
Show answer
Correct answer: Away from buildings and other vehicles
With such a load you should park away from buildings and other vehicles when possible.
Source: Mississippi Driver's License Manual (Revised December 2024), page 87 · Open this page in the manual (Manual page 87)
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What should you always do when preparing to back up a truck or other large vehicle?
- Sound the horn twice and back up slowly
- Get out and carefully check clearance limits
- Check only the mirrors before you start
- Turn on the hazard lights and back slowly
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Correct answer: Get out and carefully check clearance limits
When preparing to back up, always get out and carefully check clearance limits.
Source: Mississippi Driver's License Manual (Revised December 2024), page 87 · Open this page in the manual (Manual page 87)
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When backing up a truck, if possible, what should you have?
- A second horn
- Another truck behind you
- The trailer lights off
- Someone to guide you
Show answer
Correct answer: Someone to guide you
The manual advises that, if possible, you have someone guide you when you back up.
Source: Mississippi Driver's License Manual (Revised December 2024), page 87 · Open this page in the manual (Manual page 87)
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What should you never do to turn a truck around?
- Back into an intersection
- Back into a driveway
- Make a three-point turn
- Use a side street
Show answer
Correct answer: Back into an intersection
The manual says never back into an intersection to turn around.
Source: Mississippi Driver's License Manual (Revised December 2024), page 87 · Open this page in the manual (Manual page 87)
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What is the "coasting" that the manual calls illegal and very risky for a truck driver?
- Driving with the cruise control on
- Idling on an upgrade
- Disengaging the clutch on a downgrade
- Shifting gears on a flat road
Show answer
Correct answer: Disengaging the clutch on a downgrade
The manual says never to disengage the clutch while driving a truck on a downgrade; this coasting is illegal and very risky.
Source: Mississippi Driver's License Manual (Revised December 2024), page 87 · Open this page in the manual (Manual page 87)
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What does the manual say to do to protect your load?
- Keep rear doors open for air
- Keep rear doors locked
- Park beside another truck
- Leave the cab unlocked
Show answer
Correct answer: Keep rear doors locked
To protect your load, the manual says to make certain to keep rear doors locked.
Source: Mississippi Driver's License Manual (Revised December 2024), page 87 · Open this page in the manual (Manual page 87)