Missouri Road Signs: Road Sign Test, Signals & Work Zone Fines

Why do nearly half of Missouri driver license test takers fail the first time? How many questions are on the Missouri Class F written test? What is the fine for speeding in a Missouri work zone? The Missouri State Highway Patrol (MSHP) administers the driver examination. The Class F written test has 25 questions and requires 20 correct, plus a separate road sign test. The Missouri Driver Guide states almost 50% of test-takers fail the first time. Under Section 304.582 RSMo, speeding or prohibited passing in a signed Missouri work zone can add $250 for a first offense and $300 for a second or subsequent offense when highway workers are present. School bus amber lights activate 500 feet before the stop.

1. Missouri Four-Part Exam and Why Nearly Half of First-Time Test-Takers Walk Out Without a License

Missouri requires a four-part driver examination: written test, vision test, road sign test, and driving test. The Missouri State Highway Patrol (MSHP) administers the examination, while the Missouri Department of Revenue handles driver licensing. The guide is clear that almost 50% of test-takers fail on the first attempt. The written test has 25 questions from the laws and driving methods covered in the Missouri Driver Guide. Answer 20 correctly to pass. The separate road sign test checks your ability to recognize and understand traffic signs. Contact the DOR at the Driver License Bureau, P.O. Box 200, Jefferson City, MO 65105.

2. Missouri Separate Road Sign Test: Sign Shapes, Colors and Meanings to Know

Missouri has a separate road sign test in addition to the written test. The Missouri Driver Guide explains traffic signs by shape, color, symbols, and wording so drivers can recognize and understand them on the road.

Shape	Diagram	Meaning	Example Sign
Octagon (8-sided)		STOP. come to a complete stop, wheels fully stopped, check all directions, then proceed when clear
Triangle (inverted)		Yield slow down, check traffic; if clear proceed, if not stop and wait until safe to go
Diamond		Hazard ahead; slow down, stay alert, and be ready to stop or steer
Rectangle (vertical)		Regulatory sign; states a traffic law, rule, or requirement
Rectangle (horizontal)		Informational sign; read it and use it to navigate or plan your route
Pentagon (5-sided)		School zone ahead; reduce speed and watch for children crossing
Round (circle)		Railroad crossing ahead; slow down, look both ways, and prepare to stop
Pennant		No passing zone; do not attempt to overtake any vehicle ahead
Orange (any shape)		Construction or work zone ahead; slow down, stay alert, and obey all posted signs
Blue (any shape)		Motorist services nearby; exit if you need fuel, food, or medical care
Brown (any shape)		Park or scenic area ahead; follow directional signs to reach it

Missouri road sign color meanings: The Missouri Driver Guide identifies white and black with regulatory signs; red with stop, yield, or prohibited movements; yellow with warnings; yellow-green with school signs; orange with construction; green with direction and distance; blue with motorist services; and brown with public recreation and cultural interests.

3. Missouri Regulatory Signs: Stop, Yield, Speed, Turn and Lane-Control Signs

Regulatory signs in Missouri state traffic rules for direction, lane use, turning, speed, parking, and other special situations. Depending on the offense, disobeying an applicable traffic law can result in a citation, fines, or points. White rectangular signs, prohibitory signs, and lane-control signs are included in the traffic-sign material in the Missouri Driver Guide.

STOP Sign

Come to a full stop and yield before proceeding

YIELD Sign

Slow down and give right-of-way; stop if needed before proceeding

Speed Limit Sign

Do not exceed this speed; adjust for road and weather conditions

Do Not Enter Sign

Entry prohibited; turn around or find an alternate route

Wrong Way Sign

You have entered a one-way road against traffic

No U-Turn Sign

U-turns are prohibited at this location

No Left Turn Sign

Do not turn left here; continue straight or turn right

No Right Turn Sign

Do not turn right here; continue straight or turn left

One Way Sign

All traffic flows one direction; do not enter going the wrong way

Keep Right Sign

Move to the right side of the island or obstruction

No Passing Zone Sign

Do not pass here; wait until the no-passing zone ends

Do Not Pass Sign

Do not overtake any vehicle ahead until passing is permitted again

No Turn on Red Sign

Wait for a green signal before turning; do not turn on red

No Left Turn on Red Sign

Wait for green before turning left; no turn on red permitted

No Right Turn on Red Sign

Wait for green before turning right; no turn on red permitted

Turn Left Only Sign

You must turn left from this lane; going straight is not allowed

Turn Right Only Sign

You must turn right from this lane; going straight is not allowed

Straight or Turn Right Sign

From this lane you may only go straight or turn right

Minimum Speed Limit Sign

You must drive at least this speed; move right if driving slower

Slower Traffic Keep Right Sign

Move to the right lane if you are driving slower than traffic

No Parking Sign

Parking prohibited here; find a legal parking area nearby

No Trucks Sign

Trucks prohibited on this road; use an alternate truck route

No Bicycles Sign

Cyclists must not enter; use an alternate route

No Pedestrian Crossing Sign

Pedestrians must not cross here; use the nearest crosswalk

Reserved Parking Sign

Park here only if you qualify; others must find a different spot

Four Way Stop Sign

Stop completely, then take turns in order of arrival

Stop Except Right Turn Sign

Traffic must stop except for the permitted right-turn movement; right-turning traffic must still yield as required

Left Turn Yield on Green Sign

Yield to all oncoming traffic before completing your left turn

Lane Use Control Sign

Follow the sign; only the shown movement is permitted from this lane

4. Diamond-Shaped Warning Signs on Missouri Roads: Ozark Curves, Mississippi River Crossings and Farm Country Hazards

Diamond-shaped warning signs flag what is ahead before you reach it. on Missouri roads that means sharp curve warnings on the Ozark Highland routes, bridge approach signs on the Missouri and Mississippi River crossings, livestock crossing signs on rural county roads, and railroad grade crossing warnings on the state extensive rail network. Orange marks construction and work-zone warnings. Under Section 304.582 RSMo, speeding or prohibited passing can carry an additional $250 for a first offense and $300 for a second or subsequent offense when highway workers are present and the required warning signs are posted.

Left Curve

A curve to the left is ahead; reduce speed

Right Curve

A curve to the right is ahead; reduce speed

Sharp Left Turn

A very sharp left turn is ahead; slow down

Sharp Right Turn

A very sharp right turn is ahead; slow down

Winding Road

Multiple curves ahead; reduce speed and stay in your lane throughout

Set of Curves (Left-Right)

Multiple curves ahead curving left then right; reduce speed

Set of Curves (Right-Left)

Multiple curves ahead curving right then left; reduce speed

Sharp Turns (Left-Right)

Successive sharp turns ahead; slow down significantly

Slippery When Wet

Wet road is slippery; reduce speed and increase following distance

Deer Crossing

Animals frequently cross here; slow down and scan both sides of the road

Pedestrian Crossing

Pedestrian crossing ahead; slow down and yield or stop as required

Bicycle Crossing

Bicycles may cross here; slow down, watch for cyclists, and yield when required

School Zone / Crossing

Children may be present; slow to posted speed

School Crossing Ahead

School crosswalk ahead; yield to crossing guard and children

Divided Highway Begins

Road splits ahead; keep right and stay in your lane

Divided Highway Ends

Two-way traffic resumes ahead; stay right and watch oncoming traffic

Merging Traffic

Traffic is merging from another lane; adjust speed to allow safe entry

Added Lane

Traffic will enter from another road, but no merge is necessary because a lane has been added

Lane Ends Ahead

Your lane ends soon; check mirrors, signal, and merge now

Lane Ends Merge Left

Your lane ends; signal and move left before the lane disappears

Left Lane Ends

Left lane ends ahead; signal and move right before it closes

Road Narrows

Road gets narrower ahead; reduce speed and stay within your lane

Narrow Bridge Ahead

Bridge is narrower than the road; slow down and stay within your lane

Low Clearance

Overhead clearance is restricted; do not proceed if your vehicle is too tall

Railroad Crossing (RR)

Tracks ahead; slow down, look both ways, and stop if a train is coming

Hill / Steep Grade (Downgrade)

Steep hill ahead; reduce speed now and use a lower gear if needed

Bump

A bump is ahead; slow down before reaching it

Dip

Dip in the road ahead; reduce speed to avoid bottoming out

Loose Gravel

Loose gravel on road; reduce speed and increase following distance

Pavement Ends

Paved surface ends ahead; slow down before the surface changes

Shoulder Drop Off

Edge of road drops steeply; stay away from the shoulder

Watch for Ice on Bridges

Bridge may be icy; reduce speed and avoid sudden braking or steering

Two Way Traffic Ahead

Divided road ends; move to the right and watch for oncoming traffic

Cross Road

Intersection ahead; slow down and scan left and right before crossing

Cross Traffic

Traffic crosses from both sides; slow down and be ready to yield or stop

T Intersection

Your road ends ahead; slow down and prepare to turn left or right

Side Road

A side road joins ahead; watch for vehicles entering from the right or left

Highway Intersection Ahead

A major intersection is approaching; reduce speed and be ready to yield

Road Entering Curve

A road merges on a curve ahead; watch for vehicles entering

Roundabout

Yield to traffic already in the roundabout; then enter and keep right

Truck Rollover

High rollover risk for trucks on this curve or ramp; reduce speed

Weave Area

Lanes are entering and exiting; stay alert, check mirrors, and adjust speed

Advisory Speed

Safe speed for this curve; slow to the posted advisory speed

Traffic Signal Ahead

A traffic light is ahead; reduce speed and be ready to stop

5. Green Signs, Blue Signs, Brown Signs: Navigating I-70, I-44, US-40 and the Show-Me States Highway Network

Guide signs do not regulate driving. they show destinations, distances, and services. Green = highway navigation. Blue = motorist services. Brown = parks and recreation.

Interstate Route Marker

You are on this interstate highway; note the number for navigation

US Route Marker

You are on this US highway; note the number for navigation

State Route Marker

You are on this state route; note the number for navigation

Exit Sign (Exit Only)

This lane leads to an exit only; move out of the lane if you are not exiting

Mile Marker

Marks your location on the route; note it for emergency or navigation use

Services Sign

Services available at next exit; move right if you need to stop

Hospital Sign (H)

Hospital is nearby; follow signs if you need emergency care

Diesel

Diesel fuel available ahead; exit if your vehicle needs it

Park / Recreation Sign

Park or recreation area nearby; exit and follow directional signs

6. What Does a Flashing Yellow Arrow Mean in Missouri? Traffic Signal Rules in the Driver Guide

Flashing red means the same as a stop sign. Flashing yellow means slow down and proceed with caution. The Missouri Driver Guide covers standard traffic lights, left-turn arrow phases, flashing signals, pedestrian signals, and dark or inoperative signals. A flashing yellow arrow is a permissive turn phase: you may turn in the arrow direction after waiting for an adequate gap in opposing traffic and yielding to pedestrians.

Standard Traffic Lights

Steady Red

Stop at the stop line, crosswalk, or before the intersection; after a complete stop, a right turn on red is allowed when clear unless a No Right Turn on Red sign is posted

Steady Yellow

The signal is changing from green to red; stop unless you are in the intersection or too close to stop safely before entering

Steady Green

Proceed through the intersection after yielding to traffic and pedestrians still in the intersection

Green Arrow (left)

Proceed in the arrow direction from the proper lane when the way is clear; yield to pedestrians and other lawful traffic

Steady Yellow Arrow

The green arrow is ending; be ready to yield to oncoming traffic or stop for the next signal phase

Steady Red Arrow

Stop and wait for a green signal or flashing yellow arrow before proceeding in the arrow direction

Circular Green (no arrow)

You may proceed; for a left turn, wait for an adequate gap in opposing traffic and yield to pedestrians

Flashing Signals

Flashing Red

Treat as a stop sign; stop fully, then proceed when safe and clear

Flashing Yellow

Slow down, check for hazards, and proceed with caution

Flashing Red Beacon

Treat the overhead beacon as a stop sign

What do you do at a dark or inoperative traffic signal in Missouri? Treat the intersection as a four-way stop.

Pedestrian Signals

WALK / White Walking Figure & DONT WALK / Orange Hand

White figure = cross now; orange hand = do not start crossing

Flashing Orange Hand + Countdown

Crossing phase ending; finish if started, do not begin

Key test point: Flashing red means the same as a stop sign. Flashing yellow means slow down and proceed with caution. A flashing yellow arrow permits the arrow movement only after yielding and waiting for an adequate gap in opposing traffic.

7. Missouri Pavement Markings: Lane Lines, Bike Lane Rules and What a Full Lane Width Means for Cyclists

Yellow lines separate opposing traffic. White lines separate same-direction traffic, while a solid white line may also mark the right edge of a road. The Missouri Driver Guide covers lane lines, turn arrows, crosswalks, stop lines, and bicycle lanes. It instructs drivers to give bicycles and mopeds a full lane width when passing; Missouri law requires a safe passing distance.

Line Colors

Yellow lines

Separate opposing traffic; never cross a solid yellow line to pass

White lines

Mark your lane boundaries; stay within the white lines

Line Types

Broken yellow line (Single)

You may pass on your side if it is safe and clear ahead

Solid yellow + broken yellow

Pass only from the broken-line side when it is safe; do not pass from the solid side

Double solid yellow lines

Passing is not allowed in either direction; stay in your lane

Broken white line

You may change lanes if it is safe; always check mirrors and signal first

Solid white line

Solid lines should not be crossed in a passing maneuver; a solid white line may also mark the right edge of the road

Double solid white lines

Do not change lanes here; stay in your current lane

Center Turn Lane

Use only when preparing to slow or stop for a left turn; do not travel in it for more than 500 feet

Center Turning Lane (sign)

Use for left turns from the main roadway; do not use it to enter the roadway from a side street

How far can you drive in a two-way left-turn lane in Missouri? A vehicle may not travel in the lane for more than 500 feet, and the lane must not be used to enter the roadway from a side street.

Pavement Symbols & Special Markings

Arrows in lane

You must follow the arrow direction from this lane

Stop line (wide white bar)

Stop completely behind this line; do not roll past it

Stop Here on Red

Stop at this painted line; do not inch forward past it

Crosswalk lines

Pedestrian crossing zone; obey traffic signals and yield or stop for pedestrians as required

Broken white line (pavement)

You may change lanes if it is safe; check mirrors and signal first

Solid white line (pavement)

Solid lines should not be crossed in a passing maneuver; a solid white line may also mark the right edge of the road

Double solid white lines (pavement)

Do not change lanes here; stay in your current lane

Railroad crossing markings (X + RR)

Tracks ahead; slow down, look both ways, and be ready to stop

Diagonal yellow lines (gore area)

Do not enter or drive through this area; it is off-limits to traffic

Bicycle lane marking

Designated for bicycles; motorists may cross or enter it only for a lawful maneuver or safe travel and must yield to bicyclists in the lane

HOV / Carpool lane diamond

Use this lane only if you have the required number of occupants

Yellow curb

Do not park alongside a curb painted yellow

Key test point: Yellow lines separate opposing traffic. White lines separate same-direction traffic, and a solid white line may also mark the right edge of the roadway.

8. Missouri Work Zone Fines When Workers Are Present: $250 First, $300 Subsequent

Missouri work zone signs are fluorescent orange and indicate work being performed on or alongside the roadway. Under Section 304.582 RSMo, a speeding violation or prohibited passing violation carries an additional $250 for a first offense and $300 for a second or subsequent offense when highway workers are present and the required warning signs are posted. Other moving violations in a work or construction zone carry an additional $35 for a first offense and $75 for a second or subsequent offense. Be extremely careful and obey all work zone signs.

Road Work Ahead

Construction zone begins ahead; reduce speed and stay alert

Flagger Ahead

A person is directing traffic; obey their signals

Workers Ahead

Road workers are present; slow down and be ready to stop

Lane Closed Ahead

A travel lane ends ahead; merge early

Road Closed

Road is completely closed; follow detour signs

Orange barrels / cones

Active work zone boundaries; stay within marked lanes

Channelizing devices (barricades)

Follow the barricades; do not drive through or around them

• You must obey a flag persons directions even if they conflict with existing signs or signals.
• When highway workers are present and the required warning signs are posted, speeding or prohibited passing in a Missouri work zone carries an additional $250 (first offense) or $300 (second or subsequent offense) under Section 304.582 RSMo.
• Work zone signs are fluorescent orange. obey them and be extremely careful throughout the zone.
• Never drive through or around a lane closure barrier. wait for the flag person or follow detour signs.

Key test point: Orange is used for construction and work-zone warning signs. If you see orange, reduce speed and be ready for lane changes, workers, equipment, or flaggers.

9. Missouri Railroad Crossings: Stop Within 15 to 50 Feet and Never Try to Beat a Train

When Missouri red lights are flashing or a gate is down at a railroad crossing, you must stop within 15 to 50 feet before the tracks. Never try to go around the gate. If there are two or more tracks, look for a second train before crossing after the first has passed.

Stop Line

Stop here completely when required before proceeding

RR Crossbuck Sign (X-shaped)

Located at the crossing; yield to trains

Railroad Crossing (at crossing)

You are at the crossing; stop if lights flash or gate lowers

Crossing Gates

Lower when a train is coming; never drive around a lowered gate

Pavement markings (X + RR)

Tracks ahead marked on pavement; slow down and prepare to stop

Flashing Red Lights

A train is approaching; stop and wait until fully clear

• The round advance warning sign tells you a railroad crossing is ahead. slow down, look for a train, and be ready to stop.
• When red lights are flashing or the gate is down, stop within 15 to 50 feet before the tracks. Do not go around the gate under any circumstances.
• The red lights may continue to flash after a train passes. if there are two or more tracks, look for a second train before crossing.
• Never start across the tracks until there is room for your entire vehicle on the other side.
• School buses are among the vehicles generally required to stop within 15-50 feet of railroad crossings, subject to statutory exceptions. be prepared for that stop when following one.

Key test point: Missouri railroad stop distance is 15 to 50 feet before the tracks when a stop is required. Never go around a lowered gate.

10. Missouri School Zone Rules and School Bus Laws: Amber Lights 500 Feet Out and When You Do not Have to Stop

Pentagon-shaped, fluorescent yellow-green signs mark Missouri school zones. You must obey a slower posted speed when lights are flashing or children are present. Missouri school bus drivers activate amber warning lights 500 feet before a designated stop. that is your cue to prepare to stop. When the red lights and stop arm activate, you must stop on a two-lane road in both directions.

School Zone

School ahead; reduce speed and watch for children

School Speed Limit

Obey the reduced speed limit posted in school zones

Speed Limit Lights Flashing

Obey the posted slower school-zone speed when lights are flashing or children are present

School Crossing Ahead

School crosswalk ahead; yield to crossing guard and children

• Obey the posted school zone speed limit when lights are flashing or children are present. At a school crossing with a traffic patrol, stop and yield if signaled.
• Missouri school bus amber warning lights activate 500 feet before a designated stop. slow down and prepare to stop when you see them.
• When the bus stops and alternate red lights and stop signal arm activate, oncoming and following traffic must stop before reaching the bus.
• You must stop on a two-lane road in both directions. You do not have to stop in these situations: (1) opposite direction on a highway divided by a median where lanes are on separate roads; (2) opposite direction on a 4+ lane highway; (3) bus stopped in a school loading zone where students do not cross the roadway.
• After a school bus unloads children, watch for them walking along the side of the road. remain stopped until the bus moves or the driver signals you to proceed.

Key test point: The pentagon shape is used exclusively for school signs. No other sign category uses this shape. making it one of the easiest shapes to identify on the exam.

11. Missouri Pedestrian and Bike Signs: Crosswalk Rules, Bicycle Passing and White Cane Pedestrians

When traffic-control signals are not present or are not operating, Missouri drivers must yield the right-of-way when a pedestrian is in a marked or unmarked crosswalk on the drivers half of the roadway or approaching so closely from the opposite half as to be in danger. When passing a bicycle or moped, the Missouri Driver Guide instructs drivers to give a full lane width, while state law requires a safe passing distance. Motorists may cross or enter a bicycle lane for a lawful maneuver or safe travel but must yield to bicyclists in the lane. Drivers must come to a complete stop for a pedestrian crossing with a guide dog or white cane.

Pedestrian Crossing Sign

Pedestrian crossing ahead; slow down and yield or stop as required

Bicycle Crossing Sign

Bicycles may cross here; slow down, watch for cyclists, and yield when required

No Bicycles

Cyclists must not enter; use an alternate route

No Pedestrian Crossing

Pedestrians must not cross here; use the nearest crosswalk

• When traffic-control signals are not present or are not operating, drivers must yield the right-of-way when a pedestrian is in a marked or unmarked crosswalk on the drivers half of the roadway or approaching so closely from the opposite half as to be in danger. Do not pass a vehicle that has stopped for a pedestrian.
• The Missouri Driver Guide tells motorists to give bicycles and mopeds a full lane width when passing. Missouri law requires a safe distance and continued clearance until safely past the bicycle.
• You may cross a bicycle lane when turning or entering/leaving the roadway. but you must yield to any cyclist already in the lane.
• Come to a complete stop for a pedestrian crossing with a guide dog or carrying a white cane.

Key test point: When traffic-control signals are not present or are not operating, Missouri drivers must yield to a pedestrian in a marked or unmarked crosswalk when the pedestrian is on the drivers half of the roadway or approaching so closely from the opposite half as to be in danger.

12. How to Pass Missouri Four-Part Driver Exam When Nearly Half of People Fail the First Time

• Four tests, not one. Missouri driver exam has four parts: written test, vision test, road sign test, and driving test. Study the Driver Guide for the written test AND learn signs visually for the separate road sign test. they test differently.
• 25 questions, need 20 correct. All questions come directly from the Missouri Driver Guide. the manual says there are no trick questions. The material you need is all here.
• Work zone speeding or prohibited passing: $250/$300 additional penalty when workers are present. Under Section 304.582 RSMo, the additional penalty applies when highway workers are present and the required warning signs are posted: $250 for a first offense and $300 for a second or subsequent offense.
• School bus: amber at 500 feet, stop on 2-lane. When you see amber lights, start slowing. the bus will stop within 500 feet. Know the three exceptions for when you do not have to stop (divided median highway, 4+ lane opposite direction, school loading zone).
• Railroad: 15 to 50 feet, never around the gate. Stop in this range when lights flash or gate is down. If two tracks, look for a second train before crossing after the first passes.
• Missouri speed limits. City/town/village: 25 mph unless posted otherwise. Interstate maximum: 70 mph. Obey the school zone posted speed when lights are flashing or children are present.
• Bicycle passing. The Missouri Driver Guide tells motorists to give bicycles and mopeds a full lane width when passing; state law requires a safe passing distance. Yield to bicyclists in a bike lane before crossing or entering it.
• Flashing yellow arrow = permissive turn. You may turn in the arrow direction after waiting for an adequate gap in opposing traffic and yielding to pedestrians.
• Flashing signals. Flashing red = full stop, then proceed when safe. Flashing yellow = slow down and proceed with caution.