Crosswalks, Stop Lines, HOV & Bike Markings

Beyond the center line, the pavement carries a whole second layer of instructions — where to stop, who has a lane to themselves, and which lane is shared or restricted.

Learner's permitAll U.S. states
⏱️ About 12 min

A center line only covers part of the story. The rest of the pavement carries its own set of markings — a crosswalk, a stop line, a diamond, a whole lane painted just for turning — each with its own rule about who goes where.

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The big idea: Special-purpose pavement markings each reserve part of the road for one job: crossing on foot, stopping at a set point, high-occupancy travel, turning, cycling, or a rail crossing — and each comes with its own do/don't for drivers.
🎯 By the end, you'll be able to
  • State what a marked crosswalk and a stop (limit) line each require of a driver
  • Recognize a two-way left-turn lane and use it only for turning, not through travel or passing
  • Explain that HOV lane occupancy minimums vary by state and facility
  • Identify a bike lane and a railroad pavement marking and what each requires
📎 Helpful to know first

Crosswalks and stop lines

A crosswalk is marked with parallel white bars (or, at a plain intersection, simply implied by the extension of the sidewalk lines) and marks where pedestrians are expected to cross — yield to anyone in it. A stop line (also called a limit line) is a solid white bar painted across your lane; it marks the exact point where you must stop for a stop sign or red signal, which is usually before the crosswalk, not on top of it.

A marked crosswalk: yield to any pedestrian crossing or about to cross.
A stop (limit) line: stop with your front bumper behind this line, not past it.

Yield markings

At some yield-controlled crossings and roundabout entries, a row of solid white triangles — sometimes called 'shark's teeth' — is painted across the lane instead of (or along with) a YIELD sign. They point toward you as a visual cue to slow and be ready to let others go first.

Yield ('shark's teeth') markings: slow down and be ready to give the right-of-way.

Two-way left-turn lane

A center lane bordered on both sides by a solid yellow line next to a broken yellow line is a two-way left-turn lane, shared by traffic from both directions. Enter it only briefly, and only to complete a left turn — either from the roadway into a driveway or side street, or from a driveway or side street onto the roadway. It is not a passing lane and not for through travel.

A two-way left-turn lane: shared by both directions, for turning only.
⚠️ Not a lane to linger in
Because traffic from both directions uses a two-way left-turn lane to complete a turn, sitting in it for anything other than a brief turning maneuver creates a head-on conflict risk. Enter, complete your turn, and clear the lane.

HOV (high-occupancy vehicle) lanes

An HOV lane is marked with a white diamond symbol painted in the lane, often paired with signs stating the minimum occupancy and hours it applies. It's reserved for vehicles carrying at least the posted minimum number of people (and in some places, certain other qualifying vehicles).

The HOV diamond marking: this lane is reserved for vehicles meeting the posted occupancy minimum.
🗺️ HOV occupancy minimums vary by state and by lane
How many occupants qualify for an HOV lane, the hours it's restricted, and which other vehicles (motorcycles, hybrids, transit) are exempt all vary by state and even by specific facility. Always check the signs posted at that HOV lane rather than assuming a number.

Bike lanes and railroad markings

A bike lane is marked with a solid white line and a bicycle symbol (sometimes with a diamond) painted in the lane. Don't drive or park in it; you may cross briefly to make a turn or enter a driveway, yielding to any cyclist first. A large white 'RR' painted on the pavement, paired with an 'X' pattern, marks an approach to a railroad crossing and reminds you to slow down and watch for a train.

A bike lane: don't drive or park in it; yield to cyclists when crossing it to turn.
R R
The 'RR' pavement marking warns of an approaching railroad crossing — slow down and watch for a train.

Check your understanding

1. This white bar is painted across your lane at an intersection. What is it?
A solid white bar across your lane is the stop (limit) line — it marks exactly where to stop, usually just before the crosswalk.
2. A center lane is bordered on both sides by a solid yellow line paired with a broken yellow line. This is a:
This marking pattern identifies a two-way left-turn lane. Use it briefly to complete a left turn — it isn't for passing or through travel.
3. A lane has a white diamond painted in it. Before you use it, you should:
The diamond marks an HOV lane, but occupancy minimums and hours vary by state and facility, so check the posted signs rather than assuming.
4. What should you do when you see large white 'RR' letters painted on the pavement ahead?
The 'RR' pavement marking warns that a railroad crossing is ahead — slow down and be alert for a train, whether or not gates or lights are visible yet.
🔎 Related lessons
Next: Colored Curb Markings Pavement Markings: Yellow vs White Lines Traffic Signal Lights & Arrows
✅ Key takeaways
  • A crosswalk marks where to yield to pedestrians; a stop line marks the exact point to stop, usually just before the crosswalk.
  • Yield ('shark's teeth') triangles ask you to slow down and be ready to give the right-of-way.
  • A two-way left-turn lane is shared by both directions for turning only — not for passing or through travel.
  • The HOV diamond marks a high-occupancy lane, but its occupancy minimum and hours vary by state and facility — check the posted signs.
  • Bike lane markings mean don't drive or park in the lane; 'RR' pavement markings warn of a railroad crossing ahead.
➡️ Painted lines aren't the only markings that change meaning by location — curb colors carry local rules too, and they vary even more than HOV occupancy. That's next.

Frequently asked questions

What is the difference between a crosswalk and a stop line?
A crosswalk marks where pedestrians cross and where you must yield to them. A stop line is a separate solid white bar, usually just before the crosswalk, marking the exact point where you must stop for a stop sign or red signal.
Can I drive through a two-way left-turn lane to pass another car?
No. A two-way left-turn lane is shared by traffic from both directions to complete a left turn only — it is not a passing lane or a through-travel lane.
Do all HOV lanes require the same number of passengers?
No, the occupancy minimum, operating hours, and any vehicle exemptions vary by state and by specific facility — always check the signs posted at that HOV lane.
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Independent educational content — not affiliated with, endorsed by, or connected to any state DMV, the AAMVA, or any government agency. This is study material, not legal advice; always confirm current rules with your state's official driver handbook.