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Missouri driving lesson · Signs, Signals & Markings

Pavement markings and no-passing zones

A 3-minute lesson from the Missouri course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.

Read time
3 minutes
Course unit
Signs, Signals & Markings
Checkpoint questions
6
Source pages
44, 45

Lines on the pavement show where lanes are divided, which way traffic flows, where you may pass or change lanes, and where to stop. Two things decide what a line means: its color, and whether it's solid or broken.

What lines mean

What lines mean
MarkingMeaning
Broken lineMay be crossed in a passing maneuver
Solid lineShould not be crossed in a passing maneuver
Yellow lineSeparates traffic going in opposite directions
White lineSeparates traffic going in the same direction
Solid white edge lineMarks the right edge of many roads
Two solid yellow linesCenter of four-lane roads; never cross to pass
Handbook p. 44 ↗

Know the rule

If the line on your left is yellow, traffic on the other side moves in the opposite direction. If it's white, traffic moves the same way you are.

Handbook p. 44 ↗
Solid yellow center line variations
Two solid yellow lines mark the center of a four-lane road

Know the rule

Two-lane roads may have no passing zones, marked by a solid yellow line on your side of the center line. They're on hills or curves where you can't see far enough ahead to pass safely.

Handbook p. 44 ↗

Know the rule

You must complete passing before you enter a no passing zone.

Handbook p. 44 ↗
No passing zone markings (with signs)
No passing zone: solid yellow line on your side of the center line

Know the rule

On any two-lane road, never pass if you can't see that the road is clear for the distance you need, even if there's no marking.

Handbook p. 44 ↗

Know the rule

Marked left-turn lanes are set off by solid yellow lines and thick yellow stripes.

Handbook p. 44 ↗
Passing zone transition on a curve
Marked left-turn lane with solid yellow lines and thick yellow stripes

Know the rule

When a sign or signal requires you to stop, stop before the stop line or, if there is one, the crosswalk.

Handbook p. 44 ↗

Know the rule

Crosswalks mark where pedestrians cross. Yield to pedestrians in or about to enter a crosswalk. Not all crosswalks are marked, so watch for pedestrians at intersections without them.

Handbook p. 45 ↗

Put it into practice

On a two-lane road, you're about to pass a truck when you see a solid yellow line starting on your side just ahead. You must finish a pass before the zone begins; since you can't, stay behind the truck.

Check your understanding

Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.

What does a yellow line on a roadway separate?
  1. Traffic traveling in the same direction
  2. Opposite-direction traffic
  3. Turning traffic only
  4. Bicycle lanes from car lanes

Answer: Opposite-direction traffic

Yellow lines separate traffic traveling in opposite directions.

Handbook p. 44 ↗
What does a white line on a roadway separate?
  1. Traffic traveling in opposite directions
  2. Parking spaces from travel lanes
  3. Traffic traveling in the same direction
  4. Two-way left-turn lanes

Answer: Traffic traveling in the same direction

White lines separate traffic traveling in the same direction.

Handbook p. 44 ↗
May you legally cross a broken line to pass another vehicle?
  1. No, broken lines can never be crossed
  2. Only broken white lines, never yellow
  3. Only on a one-way street
  4. Yes, you may cross to pass

Answer: Yes, you may cross to pass

Broken lines may be crossed in a passing maneuver, unlike solid lines.

Handbook p. 44 ↗
The center of a four-lane road has two solid yellow lines. What does this mean?
  1. Never cross double solid yellow lines
  2. Cross to pass if no oncoming traffic
  3. It marks a two-way left-turn lane
  4. It separates same-direction traffic

Answer: Never cross double solid yellow lines

You should never cross the two solid yellow lines in the center of a four-lane road to pass.

Handbook p. 44 ↗
You see a solid yellow line on your side of the center line marking a no-passing zone, but the road looks otherwise clear. What should you do?
  1. Pass anyway since it looks clear
  2. Pass only if you can finish quickly
  3. Do not attempt to pass
  4. Pass if the driver ahead waves you on

Answer: Do not attempt to pass

When you see a solid yellow line on your side of the center line, do not try to pass.

Handbook p. 44 ↗
What must you do when required to stop at a marked crosswalk or stop line?
  1. Stop before the stop line or crosswalk
  2. Stop past the crosswalk for better visibility
  3. Only stop if pedestrians are visible
  4. Roll slowly through if clear

Answer: Stop before the stop line or crosswalk

When required to stop because of a sign or signal, you must stop before reaching the stop line or crosswalk.

Handbook p. 44 ↗
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