Missouri: Signals and vehicle controls — Part 4 Practice Test
Questions in this part include: “If your vehicle has anti-lock brakes, which of these should you not do?” · “A vehicle made after what date must have safety glass in all windows?”
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Questions are original and based on the official manual "Missouri Driver Guide" (Revised August 2026), Missouri Department of Revenue.
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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If your vehicle has anti-lock brakes, which of these should you not do?
- Pump your brakes
- Keep your foot on the brake
- Steer while braking
- Maintain firm pressure on the pedal
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Correct answer: Pump your brakes
The manual says that with anti-lock brakes you should not pump your brakes or forget to steer.
Source: Missouri Driver Guide (Revised August 2026), page 64 · Open this page in the manual (Manual page 64)
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If your vehicle has an anti-lock brake system, where does the manual tell you to look for proper braking techniques in special situations?
- A driving school
- The state patrol office
- Your owner’s manual
- Your insurance agent
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Correct answer: Your owner’s manual
The manual says to refer to your owner’s manual for proper braking techniques in special situations if your vehicle has ABS.
Source: Missouri Driver Guide (Revised August 2026), page 63 · Open this page in the manual (Manual page 63)
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Which headlight setting should you use when you must drive in fog?
- High beam
- Low beam
- Parking lights only
- Flashing high beams
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Correct answer: Low beam
The manual says to keep headlights on low beam in fog because you will see less with high beams.
Source: Missouri Driver Guide (Revised August 2026), page 64 · Open this page in the manual (Manual page 64)
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What does the NTSB recommend for drivers of 12- and 15-passenger vans?
- Carry no more than four passengers at any time
- Drive them only on roads with a posted limit under 55 mph
- Get specific training on handling and operating these vans
- Have the vehicle inspected each time it is loaded
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Correct answer: Get specific training on handling and operating these vans
The manual says the NTSB recommends that all drivers of 12- and 15-passenger vans obtain specific training on handling and operating them.
Source: Missouri Driver Guide (Revised August 2026), page 66 · Open this page in the manual (Manual page 66)
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According to the NTSB, 12- and 15-passenger vans are inherently unstable when loaded to their designed level and carrying how many passengers?
- More than five
- More than ten
- More than twenty
- Fewer than three
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Correct answer: More than ten
The manual says the NTSB determined that 12- and 15-passenger vans are inherently unstable when carrying more than ten passengers.
Source: Missouri Driver Guide (Revised August 2026), page 66 · Open this page in the manual (Manual page 66)
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What condition must your vehicle’s brakes be in?
- Adjusted within the past year
- Good working order
- Replaced every two years
- Free of any dust
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Correct answer: Good working order
The manual requires that brakes be in good working order.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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What headlights must your vehicle have?
- At least two functioning amber headlights
- At least one functioning white headlight
- At least four functioning white headlights
- At least two functioning white headlights
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Correct answer: At least two functioning white headlights
Your vehicle must have at least two functioning white headlights.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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Your vehicle must have at least two functioning red taillights and reflectors that other drivers can see from what distance?
- 500 feet
- 100 feet
- 250 feet
- 1,000 feet
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Correct answer: 500 feet
Taillights and reflectors must be visible to other drivers from 500 feet.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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Which signaling devices must your vehicle have in working order?
- Turn signals and backup lights, whichever the owner chooses
- Brake lights and fog lights, whichever the owner prefers
- Turn signals and brake lights as originally installed
- Hazard flashers and fog lights as originally installed
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Correct answer: Turn signals and brake lights as originally installed
Your vehicle must have functioning turn signals and brake lights as originally installed by the manufacturer.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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What must be true of your vehicle’s steering mechanism?
- It must be rebuilt every five years
- It must not have too much play or binding
- It must be fitted with power assist
- It must be adjusted by a licensed dealer
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Correct answer: It must not have too much play or binding
The steering mechanism must not have too much play or binding.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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What must you not have on your vehicle, regarding tires and wheels?
- Tires with a bright tread color
- Tires with raised white letters
- Wheels with a decorative finish
- Bald or mismatched tires
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Correct answer: Bald or mismatched tires
You must not have bald or mismatched tires on your vehicle.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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A vehicle made after what date must have safety glass in all windows?
- January 1, 1936
- January 1, 1926
- January 1, 1946
- January 1, 1956
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Correct answer: January 1, 1936
A vehicle made after January 1, 1936 must have safety glass in all windows.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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What is required of the viewing area of your windshield?
- It must be replaced every two years
- It must be tinted on the lower half
- It may not be badly broken
- It must be cleaned with approved fluid
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Correct answer: It may not be badly broken
The viewing area of your windshield may not be badly broken.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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Which of these may be on the windshield even though material that reduces visibility is not allowed?
- Decorations on the lower portion of the windshield
- Informational signs on the upper tinted portion
- Any sticker on the driver’s side of the windshield
- Parking permits on the center of the windshield
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Correct answer: Informational signs on the upper tinted portion
Besides labels and stickers required by law or ordinance, only informational signs on the upper portion of the windshield normally tinted by manufacturers are allowed.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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What is required of your vehicle’s windshield wipers?
- They must be new
- They must be rubber
- They must run at two speeds
- They must work
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Correct answer: They must work
The vehicle’s windshield wipers must work.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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What kind of horn must your vehicle have?
- A horn that can be heard only by the driver of the vehicle
- A horn that plays a musical tone chosen by the owner
- A functioning horn that other drivers and pedestrians can hear
- A horn that sounds only above thirty miles an hour
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Correct answer: A functioning horn that other drivers and pedestrians can hear
Your vehicle must have a functioning horn that other drivers and pedestrians can hear.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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What parts must your vehicle’s exhaust system have?
- A removable exhaust pipe and tailpipe only
- An attached exhaust pipe, muffler, and tailpipe
- A tailpipe and a spare muffler
- An exhaust pipe and an air filter
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Correct answer: An attached exhaust pipe, muffler, and tailpipe
Your vehicle must have an attached exhaust pipe, muffler, and tailpipe.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)
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If your vehicle was made after 1967, what mirrors must it have?
- An outside rearview mirror only
- Two outside mirrors and no inside mirror
- An inside mirror only
- An inside and an outside rearview mirror
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Correct answer: An inside and an outside rearview mirror
A vehicle made after 1967 must have an inside and an outside rearview mirror.
Source: Missouri Driver Guide (Revised August 2026), page 84 · Open this page in the manual (Manual page 84)