Missouri Road Signs (A Complete Guide)

Missouri Road Signs (A Complete Guide)

Road safety is everyone’s business. 

And that isn’t just about knowing how to operate your vehicle. It also includes understanding and obeying the various road signs along Missouri roadways.

This is why, here, we’re going to give you a complete guide on the Missouri road signs. 

Remember, these signs come in different forms — some are pavement markings, others are light signals, and still, others are actual signs. 

We’ll look at all of these. 

So let’s get started!

Missouri Pavement Markings

Pavement markings play a crucial role in managing driver behavior. They tell you the following things:

  • Where lanes are separated
  • Whether or not you can pass other vehicles or switch lanes
  • Where pedestrians can cross 
  • Where you must stop 

Let’s take a close look at these.

On Traffic Direction

Lines do more than tell you where lanes are divided. They also let you know whether you should expect oncoming traffic or not.

A white line on your left means traffic flows in the same direction. A yellow line indicates you’re traveling on a two-way street.

Missouri Road Signs

Pay attention to the center marking if you’re on a highway with four lanes. Two solid yellow lines mean vehicles on the other side are going in the opposite direction. Remember, you cannot cross these lines to pass another car.

On Passing

A solid yellow line marks No-Passing Zones. If you need to overtake the vehicle in front of you, ensure you do it before entering the No Passing Zone or wait until you’ve gone past it.

Missouri Road Signs

On a two-way street, don’t attempt to pass other vehicles if there is a solid yellow line on your side. However, even if there is no marking, avoid passing if you don’t have a clear distance ahead to complete it.

On Turning

Sometimes, you’ll see a mark on a lane indicating which direction you can go. 

For some lanes, the arrow only points in one direction (either left or right). 

Missouri Road Signs

Other times, you’ll encounter dual-use lanes. These have markings that allow you to proceed in more than one direction. Show in the picture below, this lane marking means you can either go straight or turn left. 

Missouri Road Signs

On Crosswalks and Stop Lines

Crosswalks indicate where pedestrians can cross the road. You must slow down before one and yield the right-of-way to people who are in or about to enter it. 

However, not all crosswalks are marked, so you must still watch out for pedestrians at an intersection. 

When a traffic signal turns red, you must stop before a stop line or a crosswalk, whichever is present. 

Missouri Traffic Signals

Besides pavement markings, you must also heed traffic signals. These come in different forms — sometimes, you’ll encounter a steady light, and other times it’ll be flashing.

You may also see arrows in various colors. You should know what each of these means, so let’s break it down.

Steady Lights

Steady Red LightYou must stop before a stop line, crosswalk, or intersection when you see a red signal.  

However, if turning right, you can do so after yielding the right-of-way to pedestrians unless there is a No Right Turn on Red sign.
Steady Yellow LightThis is a transitory sign indicating the light is about to change from green to red. It’s best to stop at a yellow signal before you enter an intersection. However, if you’re already in it, proceed to the other side with caution.
Green Light
You can proceed through the intersection after yielding the right-of-way to traffic and crossing pedestrians.   
Steady Red ArrowThis acts like a steady red signal — you must stop before a stop line, crosswalk, or intersection. You can complete your turn once the light changes.

Steady Yellow ArrowIt appears after a green arrow, indicating that it’ll change to either of the following: 

A circular green light
A flashing yellow arrow
A red arrow 

Be ready to stop and yield the right of way.
Green ArrowThis indicates that you can proceed in the direction the arrow is pointing to once the way is clear of pedestrians and traffic.

When turning left, remember that there are three phases:

Permissive: You must wait and find a gap in the oncoming traffic before turning.

Protected: You can only turn left on a green light, and the opposing traffic stops at a red one. 

Protected/Permissive: You have either a protected or permissive phase, and you must wait and find an appropriate gap in the oncoming traffic so you can complete your turn.

Flashing Lights

When you see flashing traffic signals, keep the following in mind:

  • A flashing red light, a steady one, and a stop sign all have the same meaning — stop.
  • A flashing yellow light means you can proceed with caution but must reduce your speed.
  • A flashing yellow arrow allows you to proceed in the direction it’s pointing after waiting for an adequate gap in the oncoming traffic to complete it. 

Dark Traffic Signals

A traffic signal that doesn’t show any lights or arrows isn’t working. As a result, you must treat it like a four-way stop.

Missouri Traffic Signs 

So we’ve covered pavement markings and traffic signals. Now, let’s move on to the actual traffic signs.

There are 4 types of traffic signs in Missouri. These are:

  • Warning signs
  • Regulatory signs
  • Work zone signs
  • Guide signs

But before we go through the different types, let’s first look at the sign colors and shapes. 

Sign Colors

Traffic signs in Missouri come in various colors, which correspond to the type of information they provide.

For stop, yield, and prohibit signs

Black and White 
Regulatory signs

Warning signs

Yellow Green
School zone signs

Construction signs

Provides information about distance and direction

Motorist services

Public recreation and cultural interests

Sign Shapes

Like colors, the shapes of traffic signs indicate their use. 

Stop sign

Yield sign

Vertical Triangle
Regulatory signs

Horizontal Triangle
Guide signs for parks and recreation
School zone

Crossbuck and Round 
Railroad signs 

No Passing Zone

Warning signs

Warning Signs

There are hazards on the road, and if you’re unprepared for them, you’re likely to get into an accident. Fortunately, there are warning signs along the way, allowing you to prepare.

Let’s look at the warning signs in Missouri. 

Traffic Control Warnings

Stop Ahead
Expect a stop sign ahead.
Signal Ahead
Expect a traffic signal ahead

Pedestrian Crossing
Don’t forget to yield the right-of-way to pedestrians who might be crossing the intersection or crosswalk

School Crossing
Be wary of children crossing the street. Reduce your speed.

Traffic Flow Warnings

Missouri Road Signs
Exit Speed Advisory
You cannot exceed the speed limit as you approach the exit
Missouri Road Signs
Added Lane
Traffic from a different road will join you on the road. However, merging is not necessary due to an additional lane.

Special Road and Traffic Warnings

Begin Divided Roadway

End Divided Roadway


Lane Ends/Merge Left

Turn and Curve Warnings

Road Curves
Turn Ahead

Reverse Turn
Speed Advisory

Large Arrow
Indicates a sharp change in travel direction

Emphasizes the need to reduce speed

Special Road and Traffic Conditions

Object Marker

Soft Shoulder

Bicycle — Share the Road

Slow-Moving Vehicle
The vehicle in front of you is traveling at less than 25 mph

Slippery When Wet

Road Intersection Warnings

Side Road Railroad Crossing 
Expect a railway crossing near the intersection

Watch out for traffic crossing your path

Side Road Ahead

T Intersection Ahead
Prepare to turn left or right

Roundabout Ahead

Regulatory Signs

Some signs focus on what you can and can’t do in an area. These are regulatory signs.

Here are some examples:

No Left Turn

No Right Turn

No U-Turn

No Trucks

No Bicycles

Stop Sign

Yield Sign
Wrong Way

No Entry

One Way

Lane Control

Speed Limit

Keep Right

Railroad Crossing

Work Zone Signs 

If there’s construction in your area, you might notice many orange-colored signs. There are different hazards and obstacles in a work site, so pay special attention to them.

It’s best to stay alert and focus on the road regardless of which type of sign you encounter. Lanes tend to be narrower, and more people mill around, such as highway workers.

Watch out for vehicles coming in and out of the work area, but most importantly, obey the work zone signs posted.

Guide Signs

You’ll recognize guide signs by their stand-out color — they’re either blue, green, or brown with white letters. 

You can categorize guide signs into three.

Missouri Road Signs

Service signs are usually blue. As its name implies, they provide information on how you can find a service facility, such as a phone booth or a hospital.

Route signs come in different shapes and colors. However, they all provide information about roadway types:

Missouri Road Signs
  • Odd numbers refer to north-south routes
  • Even numbers refer to east-west routes
  • Three-digit even numbers represent interstate highways that loop around cities.
  • Three-digit odd numbers are roadways that direct traffic into the city’s road system.

Route signs can be lifesavers during a road trip. Following them can prevent you from getting lost.

Emergency reference markers tell you where you are along a roadway. They’re mile markers that appear every two-tenths of a mile. 

You can use them to pinpoint your location to help you navigate your route. They also come in handy during an emergency, especially if you need someone to find you.

The Wrap Up

We covered them all — from pavement markings to traffic signals to warning, regulatory, work zone, and guide signs. 

And now that you know what each one means, it’s your responsibility to look out for them and obey them. 

Remember, all these Missouri road signs have a purpose. And following them can help keep you and everyone else safe. 

Drive safely!

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