Missouri: Road signs
Warning, regulatory, guide and service signs and the speed guide in the Missouri Driver Guide. Split into 3 shorter tests so you're not stuck in one long quiz.
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Road signs — Part 1
Warning, regulatory, guide and service signs and the speed guide in the Missouri Driver Guide. — Part 1
StartRoad signs — Part 2
Questions in this part include: “What kind of information do regulatory signs give you?”
StartRoad signs — Part 3
Questions in this part include: “Where may lane control signs be located?”
StartAll 48 Road signs questions with answers
Choose a part above to take a practice test, or study every question and answer here.
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What do warning signs tell you to do?
- Speed up so you can clear the hazard quickly
- Pull off the road at the next opportunity
- Move into the left lane right away
- Slow down and be prepared to stop if necessary
Show answer
Correct answer: Slow down and be prepared to stop if necessary
Warning signs warn you to slow down and be prepared to stop if necessary because a special situation or a hazard is ahead.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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What does a Stop Ahead warning sign tell you?
- A stop sign has been removed from the road ahead
- Traffic must stop for a school bus ahead
- A stop sign is ahead; be prepared to stop
- The road ahead is closed to all traffic
Show answer
Correct answer: A stop sign is ahead; be prepared to stop
A Stop Ahead sign means there is a stop sign ahead on the road you are on, so be prepared to stop.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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What does a Signal Ahead warning sign tell you?
- A traffic light is ahead; be prepared to stop
- The traffic light ahead has stopped working
- The next intersection has no traffic light
- A railroad warning signal is on the road ahead
Show answer
Correct answer: A traffic light is ahead; be prepared to stop
A Signal Ahead sign means there is a traffic light signal ahead on the road you are on, so be prepared to stop.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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What does a Pedestrian Crossing warning sign tell you to do?
- Pedestrians must yield to vehicles at this location
- Speed up to clear the crosswalk quickly
- Stop only if a pedestrian is in the road ahead
- Slow down and yield to pedestrians in the crosswalk
Show answer
Correct answer: Slow down and yield to pedestrians in the crosswalk
A Pedestrian Crossing sign tells you to yield to pedestrians walking in the crosswalk and to slow down.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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What does a School Crossing warning sign tell you to do?
- Stop completely and wait for a crossing guard
- Slow down and watch for children crossing the road
- Expect a school bus to stop in the road ahead
- Pull over until all children have left
Show answer
Correct answer: Slow down and watch for children crossing the road
A School Crossing sign tells you to slow down and watch for children crossing the road.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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What does an Exit Speed Advisory sign tell you?
- The highway exit is closed
- The highway exit ramp has a toll
- The highway exit ramp has a minimum speed
- The highway exit ramp has a speed advisory
Show answer
Correct answer: The highway exit ramp has a speed advisory
An Exit Speed Advisory sign shows that the highway exit ramp has a speed advisory.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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What does an Added Lane warning sign tell you?
- Another road enters and no merging is necessary
- A lane will end ahead, so you must merge
- Traffic on your road must stop to let others enter
- The road ahead becomes divided by a median
Show answer
Correct answer: Another road enters and no merging is necessary
An Added Lane sign means traffic from another road will be entering, but no merging is necessary because a lane has been added.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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What does a Begin Divided Roadway warning sign tell you?
- The road ahead becomes a one-way street
- Two roads will soon join into one road
- The road will soon be divided by a median or barrier
- A median or barrier will end at the next exit
Show answer
Correct answer: The road will soon be divided by a median or barrier
A Begin Divided Roadway sign means the road will soon become two-way traffic divided by a median or barrier.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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What does an End Divided Roadway warning sign tell you?
- Two-way traffic will soon become one-way traffic
- Traffic from the left must stop ahead
- The road will narrow to one lane
- Two-way traffic will no longer be divided
Show answer
Correct answer: Two-way traffic will no longer be divided
An End Divided Roadway sign means two-way traffic will no longer be divided by a median or barrier.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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What does a Merge warning sign tell you?
- You must merge into the left lane right away
- Be prepared for vehicles to move into your lane
- Stop and let all merging traffic enter first
- Your lane ends and traffic must move right
Show answer
Correct answer: Be prepared for vehicles to move into your lane
A Merge sign means traffic from another road will be entering the road, so be prepared for vehicles to move into your lane.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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On a Lane Ends/Merge Left sign, what must you do if you are in the right lane?
- Stay in your lane, since left traffic must yield
- Merge right onto the shoulder
- Merge left, yielding to traffic in the left lane
- Speed up and pass on the left before the lane ends
Show answer
Correct answer: Merge left, yielding to traffic in the left lane
If you are in the right lane when two lanes become one, you must merge left, yielding to traffic driving in the left lane.
Source: Missouri Driver Guide (Revised August 2026), page 46 · Open this page in the manual (Manual page 46)
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A curve sign warns of a curve where the recommended speed is:
- Less than the posted speed limit
- Equal to the posted speed limit
- Higher than the posted speed limit
- 25 mph or less
Show answer
Correct answer: Less than the posted speed limit
A curve sign warns of a curve where the recommended speed is less than the posted speed limit for the highway.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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A turn sign warns of a sharp turn where the recommended maximum speed is:
- 30 mph or less
- 20 mph or less
- 40 mph or less
- 45 mph or less
Show answer
Correct answer: 30 mph or less
A turn sign warns of a sharp turn or turn where the recommended maximum speed is 30 mph or less.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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What does a reverse turn sign warn of?
- A single turn that doubles back
- A road that turns into a dead end
- Two turns in opposite directions
- Two turns in the same direction
Show answer
Correct answer: Two turns in opposite directions
A reverse turn sign is used to warn of two turns in opposite directions.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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On a reverse turn sign, which turn may be sharper?
- The first turn
- The second turn
- Both turns equally
- Neither turn
Show answer
Correct answer: The second turn
On a reverse turn sign, the second turn may be sharper than the first.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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What does the advisory speed plate on a curve or turn sign show?
- The minimum legal speed for the curve
- The maximum legal speed on the highway
- The speed limit for trucks only
- The recommended speed for the curve or turn
Show answer
Correct answer: The recommended speed for the curve or turn
Curve and turn signs have an advisory speed plate that shows the recommended speed for the curve or turn.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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What should you do when you see a large arrow sign on the outside of a turn?
- Slow down for a sharp change of direction
- Speed up to stay in your lane
- Stop and check for oncoming traffic
- Move to the center of the turn
Show answer
Correct answer: Slow down for a sharp change of direction
A large arrow sign may be seen on the outside of a turn, and you should slow down for the sharp change of direction of travel.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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At curves and turns, what may chevron signs be used to do?
- Show where a lane ends before a merge
- Mark the end of a divided roadway
- Warn of a railroad crossing ahead
- Add extra emphasis to slow down
Show answer
Correct answer: Add extra emphasis to slow down
A chevron may be used at curves and turns to add extra emphasis to slow down.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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What are object markers used to notify drivers of?
- Road work ahead on the shoulder
- Objects in or very close to the roadway
- Animals that cross the road
- Places where lane changes are allowed
Show answer
Correct answer: Objects in or very close to the roadway
Object markers notify drivers of objects in the roadway or very close to the edge of the roadway.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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What does a Soft Shoulder warning sign tell you?
- The shoulder is paved; you may use it to pass
- The shoulder is soft; stay on the pavement
- The shoulder ahead is closed for repairs
- Slow vehicles may use the shoulder ahead
Show answer
Correct answer: The shoulder is soft; stay on the pavement
A Soft Shoulder sign means the shoulder on the side of the road ahead is soft, so do not drive off the pavement.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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What does a Bicycle - Share the Road warning sign tell you?
- Bicycles are not allowed on this road
- A bicycle lane begins at the next intersection
- Bicycle riders always have the right-of-way here
- Watch for bicycle riders in the same lane as traffic
Show answer
Correct answer: Watch for bicycle riders in the same lane as traffic
A Bicycle - Share the Road sign tells you to watch for bicycle riders traveling in the same lane as vehicular traffic.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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What does a Slippery When Wet warning sign tell you?
- The road may be unusually slippery when wet
- The road ahead is closed when it rains
- The road ahead has loose gravel
- Water often covers the road ahead
Show answer
Correct answer: The road may be unusually slippery when wet
A Slippery When Wet sign means the road ahead becomes unusually slippery in wet weather, so drive carefully.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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On what might you see a reflective orange triangle sign?
- On school buses and city transit buses
- On police cars and emergency vehicles
- On construction equipment or farm vehicles
- On trucks hauling oversize loads
Show answer
Correct answer: On construction equipment or farm vehicles
A reflective orange triangle on the rear of a vehicle is a slow moving vehicle sign; you may see it on construction equipment or farm vehicles.
Source: Missouri Driver Guide (Revised August 2026), page 47 · Open this page in the manual (Manual page 47)
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A yellow diamond sign shows a plus-shaped symbol of two roads crossing. What does it tell you?
- Another road crosses the road
- The road you are traveling does not continue
- Another road enters from only one side
- A railway crossing is very close to the intersection
Show answer
Correct answer: Another road crosses the road
This warning sign means another road crosses the road, so you must watch carefully for traffic crossing your path.
Source: Missouri Driver Guide (Revised August 2026), page 48 · Open this page in the manual (Manual page 48)
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A yellow diamond sign shows a straight road with a short side road joining it from one side. What does it warn you about?
- Another road crosses the road from both sides
- The road you are traveling does not continue
- Another road enters from the direction shown
- A roundabout is ahead on the road
Show answer
Correct answer: Another road enters from the direction shown
A side road ahead sign warns that another road enters the road from the direction shown on the sign.
Source: Missouri Driver Guide (Revised August 2026), page 48 · Open this page in the manual (Manual page 48)
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A yellow diamond sign shows a T-shaped symbol. What must you do when you reach the intersection ahead?
- Continue straight, because the road crosses ahead
- Turn either right or left, because the road does not continue
- Yield to traffic entering from the left only
- Slow down and follow the road rules for roundabouts
Show answer
Correct answer: Turn either right or left, because the road does not continue
A T intersection ahead sign means the road you are traveling does not continue, so you must turn either right or left.
Source: Missouri Driver Guide (Revised August 2026), page 48 · Open this page in the manual (Manual page 48)
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A yellow diamond sign shows a side road with a railroad-tracks symbol beside it. What does it warn you about?
- A roundabout very close to the intersection
- A road that ends at a T intersection
- Road work very close to the intersection
- A railway crossing very close to the intersection
Show answer
Correct answer: A railway crossing very close to the intersection
This warning sign marks a railway crossing very close to the intersection, so you should use caution when crossing the tracks.
Source: Missouri Driver Guide (Revised August 2026), page 48 · Open this page in the manual (Manual page 48)
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A yellow diamond sign shows three curved arrows forming a circle. What should you do?
- Slow down and follow the road rules for roundabouts
- Stop and wait for all traffic in the circle to clear
- Expect another road to cross your path at right angles
- Turn either right or left because the road ends
Show answer
Correct answer: Slow down and follow the road rules for roundabouts
A roundabout intersection is ahead, so you slow down as required by the speed restriction sign and follow the road rules for roundabouts.
Source: Missouri Driver Guide (Revised August 2026), page 48 · Open this page in the manual (Manual page 48)
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What kind of information do regulatory signs give you?
- The location of services such as rest areas and hospitals
- Rules for traffic direction, lane use, turning, speed, and parking
- Direction and distance to cities, airports, and state lines
- Warnings that work is being done on or beside the roadway
Show answer
Correct answer: Rules for traffic direction, lane use, turning, speed, and parking
Regulatory signs give information about rules for traffic direction, lane use, turning, speed, parking, and other special situations.
Source: Missouri Driver Guide (Revised August 2026), page 48 · Open this page in the manual (Manual page 48)
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A white sign has a red circle with a red slash over a symbol. What does it indicate?
- You must do the action the symbol shows
- The action is allowed only at night
- The action is allowed only for trucks
- You cannot do the action the symbol shows
Show answer
Correct answer: You cannot do the action the symbol shows
A red circle with a red slash over a symbol indicates you cannot do something, for example make a left turn or a U-turn.
Source: Missouri Driver Guide (Revised August 2026), page 48 · Open this page in the manual (Manual page 48)
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You make a wrong turn into a lane of oncoming traffic and see a red sign reading WRONG WAY. What should you do?
- Stop in the lane and wait for oncoming traffic to pass
- Pull off the road safely, turn around, and go back
- Continue to the next intersection before turning around
- Speed up to clear the lane and keep going
Show answer
Correct answer: Pull off the road safely, turn around, and go back
The manual says that after entering a lane of oncoming traffic by a wrong turn, you pull off the road as quickly and safely as possible, turn around, and go back.
Source: Missouri Driver Guide (Revised August 2026), page 49 · Open this page in the manual (Manual page 49)
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What do lane control signs with arrow symbols tell you?
- Which lanes are closed for road work
- Which lane is reserved for slow vehicles
- How many lanes the road has ahead
- Which direction you can go from each lane
Show answer
Correct answer: Which direction you can go from each lane
Lane control signs use an arrow symbol to tell you which direction you can go from each lane.
Source: Missouri Driver Guide (Revised August 2026), page 49 · Open this page in the manual (Manual page 49)
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Where may lane control signs be located?
- Along the road or hanging over the road
- Only painted on the pavement
- Only at railroad crossings
- Only at the end of interstate ramps
Show answer
Correct answer: Along the road or hanging over the road
Lane control signs are along the road or hanging over the road.
Source: Missouri Driver Guide (Revised August 2026), page 49 · Open this page in the manual (Manual page 49)
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A white sign shows a black arrow that curves to the right past a shape on its left. What does it require?
- Traffic to pass only to the left side of a feature or obstruction
- Slow vehicles to use the right lane only
- Traffic to pass only to the right side of a feature or obstruction
- Drivers to turn right at the next intersection
Show answer
Correct answer: Traffic to pass only to the right side of a feature or obstruction
A keep right sign marks locations that require traffic to pass only to the right side of a feature or obstruction.
Source: Missouri Driver Guide (Revised August 2026), page 50 · Open this page in the manual (Manual page 50)
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What do guide signs show?
- Direction and distance to cities, airports, and state lines
- Rules for traffic direction, lane use, and turning
- The location of services such as rest areas and hospitals
- Work being performed on or alongside the roadway
Show answer
Correct answer: Direction and distance to cities, airports, and state lines
Guide signs show direction and distance to various locations such as cities, airports, and state lines, or to special areas such as national parks.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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A blue rectangular sign has white letters or symbols. What does this kind of sign show?
- Direction and distance to cities and airports
- Where services such as rest areas and hospitals are
- Work being performed beside the roadway
- Rules for traffic direction and lane use
Show answer
Correct answer: Where services such as rest areas and hospitals are
Service signs show the location of various services, such as rest areas and hospitals.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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What does the shape of a route sign indicate?
- The maximum speed limit allowed on the roadway
- The number of lanes the roadway has ahead
- The direction you are traveling on the roadway
- The type of roadway, such as interstate or state
Show answer
Correct answer: The type of roadway, such as interstate or state
The shape of route signs indicates the type of roadway: interstate, United States, state, or county.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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What does the manual say to use when planning a trip to determine your route?
- A highway map
- Emergency reference markers
- Service signs
- Exit numbers
Show answer
Correct answer: A highway map
When planning a trip, you use a highway map to determine your route and then follow the route signs during the trip.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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How are north-south routes identified?
- By even numbers
- By three-digit numbers only
- By odd numbers
- By numbers ending in zero
Show answer
Correct answer: By odd numbers
North-south routes are identified by odd numbers.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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How are east-west roads identified?
- By odd numbers
- By even numbers
- By three-digit numbers only
- By numbers ending in five
Show answer
Correct answer: By even numbers
East-west roads are identified by even numbers.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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How are interstate highways that loop around cities identified?
- Three-digit numbers that begin with an odd digit
- Two-digit numbers that are always odd
- Two-digit numbers that are always even
- Three-digit numbers that begin with an even digit
Show answer
Correct answer: Three-digit numbers that begin with an even digit
Interstate highways that loop around cities are identified by three-digit numbers which begin with an even digit, such as I-270 and I-435.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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How are roadways called "spurs", which direct traffic into a city's road system, identified?
- Three-digit numbers that begin with an odd digit
- Three-digit numbers that begin with an even digit
- Two-digit numbers that are always odd
- Two-digit numbers that are always even
Show answer
Correct answer: Three-digit numbers that begin with an odd digit
Spurs, the roadways that direct traffic into a city's road system, are identified by three-digit numbers which begin with an odd digit, such as I-155 and I-170.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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From which end are exit numbers numbered on an interstate that travels west and east?
- From the east, starting at zero
- From the middle of the state
- From the west, starting at zero
- From the south, starting at zero
Show answer
Correct answer: From the west, starting at zero
Interstates traveling west/east are numbered starting from the west, so exit numbers start at zero and increase as you drive east.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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Where do exit numbers begin on an interstate that travels north and south?
- At the north point, increasing toward the south
- At the south point, increasing toward the north
- At the middle of the state, increasing both ways
- At the west point, increasing toward the east
Show answer
Correct answer: At the south point, increasing toward the north
Interstates that travel north/south have their exits numbered beginning at the south point and increasing north.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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You enter Missouri from the north on a north-south interstate and drive south. What happens to the exit numbers?
- They increase
- They stay the same
- They start over at zero at each exit
- They decrease
Show answer
Correct answer: They decrease
If you enter the state from the north and drive south, then the exit numbers decrease.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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Where are emergency reference markers placed?
- Along the outside shoulder
- In the median between the roadways
- Over the travel lanes
- On the center line of the road
Show answer
Correct answer: Along the outside shoulder
Emergency reference markers are mile markers placed along the outside shoulder to mark the edge of the roadway.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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How often are emergency reference markers located along the interstate?
- Every three-tenths of a mile
- Every four-tenths of a mile
- Every two-tenths of a mile
- Every five-tenths of a mile
Show answer
Correct answer: Every two-tenths of a mile
The reference markers are located every two-tenths of a mile, so motorists will always be in sight of a sign.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)
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What information do emergency reference markers give about your travel?
- The speed limit and the next exit distance
- The direction of travel and the route number
- The name of the next town and its distance
- The number of lanes ahead
Show answer
Correct answer: The direction of travel and the route number
Emergency reference markers tell the direction of travel and route number.
Source: Missouri Driver Guide (Revised August 2026), page 54 · Open this page in the manual (Manual page 54)