roadwise.Open study app

Hawaii driving lesson · Signs, Signals & Markings

Centerlines, lane lines and edgelines

A 3-minute lesson from the Hawaii 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
33, 34, 35, 77

Lines on the pavement are traffic laws you can see. Color tells you direction: yellow separates traffic going opposite ways, white separates traffic going the same way. Solid versus broken tells you whether you may cross.

Pavement markings

Lines, words or figures marked on the pavement with paint, reflectors or other markers.

Handbook p. 33 ↗

Know the rule

Yellow centerlines separate traffic moving in opposite directions.

Handbook p. 33 ↗
Center line types (composite)
Yellow centerlines: single broken, double solid, and a solid no-passing line beside a broken line

What each line means

What each line means
MarkingMeaning
Single broken yellowTwo-lane center; stay right, cross to pass if safe
Double solid yellowNo passing in either direction
Single solid yellow (no-passing line)No passing zone on a two-lane road
Single dashed whiteMay cross when you can do so safely
Single solid whiteChanging lanes is hazardous; cross rarely
Double solid whiteLane changes prohibited – never cross
Red markings or reflectorsRoadway must not be entered or used
Handbook p. 33 ↗

Know the rule

You may cross a double solid yellow line, or a no-passing line, ONLY to make a left turn into or from an alley, private road or driveway.

Handbook p. 33 ↗

Know the rule

White lines separate lanes moving in the same direction, and you must drive between these lane lines.

Handbook p. 34 ↗

Know the rule

For a single solid white line, the wider the line, the greater the hazard. Cross it only in unusual circumstances and then only with great care.

Handbook p. 34 ↗

Know the rule

You must NOT cross a double solid white line.

Handbook p. 35 ↗

Know the rule

Red lane marking reflectors facing you mean you are going the wrong direction in the traffic lane.

Handbook p. 77 ↗

Edgelines

Solid white or yellow lines along the road's edge used as a safety guide. White marks the right edge; yellow may mark the left edge on divided streets and highways.

Handbook p. 35 ↗
Passing/travel lane diagram (with quiz choices text)
Yellow lines mark the left edge beside the median on a divided roadway

Put it into practice

You're behind a slow truck on a two-lane road. On your side of the center is a solid yellow line, beside a broken yellow line on the other side. The solid line is in your lane, so you may not pass. Only oncoming traffic, with the broken line, may pass.

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.

Yellow centerlines are used to:
  1. separate lanes moving the same way
  2. mark the right edge of the road
  3. separate traffic moving in opposite directions
  4. mark a lane reserved for bicycles

Answer: separate traffic moving in opposite directions

Yellow centerlines separate opposing traffic flows.

Handbook p. 33 ↗
A single broken yellow centerline on a two-lane road means:
  1. turning left here is always prohibited
  2. this marks a one-way street ahead
  3. you may cross it to pass when safe
  4. passing is never allowed on this road

Answer: you may cross it to pass when safe

You may cross a single broken yellow centerline to pass when safe.

Handbook p. 33 ↗
Double solid yellow lines mean:
  1. passing is prohibited in both directions
  2. passing is allowed when the way is clear
  3. passing is prohibited in one direction only
  4. you must stop before crossing them

Answer: passing is prohibited in both directions

Double solid yellow lines prohibit passing in either direction.

Handbook p. 33 ↗
White lane lines are used to separate:
  1. traffic moving in opposite directions
  2. marked parking areas
  3. bike lanes from car lanes
  4. lanes of traffic moving the same way

Answer: lanes of traffic moving the same way

White lines separate lanes moving in the same direction.

Handbook p. 34 ↗
A single solid white line indicates that:
  1. lane changes here are hazardous
  2. it may be crossed freely when clear
  3. it separates opposing traffic
  4. it marks the start of a passing zone

Answer: lane changes here are hazardous

A solid white line signals hazardous lane movement; cross only with great care.

Handbook p. 34 ↗
A double solid white line means:
  1. you must never cross it
  2. it marks a school zone ahead
  3. it marks a reserved bus lane
  4. you may cross it carefully

Answer: you must never cross it

Double solid white lines must never be crossed.

Handbook p. 35 ↗
Take the lesson checkpoint in the app

More in Signs, Signals & Markings