How Do You Choose the Correct Lane at a Roundabout?

A multilane roundabout can be confusing because the lane you select before entering determines which exits you may take. Learn how to read advance signs and pavement arrows, follow the correct path and avoid unsafe last-second lane changes.

Quick answer: Choose your lane before entering a multilane roundabout by following the lane-use signs and pavement arrows for your intended exit. At a typical two-lane roundabout, the right lane generally serves right turns, while the left lane generally serves left turns and U-turns; going straight may be permitted from either lane. Actual signs and arrows always take priority. Yield to circulating traffic, stay in your lane and exit only where that lane allows.

Why roundabout lane choice matters

In a multilane roundabout, the lanes may lead to different exits. Entering in the wrong lane can put you in conflict with a car traveling beside you or tempt you to cut across another circulating lane. A lane assignment is more than a suggestion: posted lane-use signs and arrows tell you which movements are permitted from your approach.

Typical lane choices at a two-lane roundabout

  • Turning right (usually the first exit): Use the right approach lane, unless markings specify another permitted lane.
  • Going straight (usually the second exit): Some roundabouts allow either approach lane; some allow only one. Read the signs and pavement arrows.
  • Turning left (usually the third exit): Typically use the left approach lane, unless a signed lane arrangement says otherwise.
  • Making a U-turn: Typically use the left lane where U-turns are permitted; follow signs and restrictions.
  • Single-lane roundabout: There is no lane selection decision; enter the one circulating lane after yielding.

Important: These are common patterns for conventional two-lane designs, not universal rules. Spiral or specially marked roundabouts can guide lanes differently. The lane-use diagram on your approach is the controlling guide.

Six steps to choose the proper roundabout lane

  1. Identify the intended exit early. Decide whether you will turn right, go straight, turn left or make a permitted U-turn.
  2. Read the advance lane-use sign. Look for the diagram showing which approaches and exits each lane serves.
  3. Follow pavement arrows and markings. Move to the correct approach lane safely and before reaching the yield line.
  4. Slow down and check the crosswalk. Yield to people crossing the entrance before focusing on circulating traffic.
  5. Yield to circulating vehicles in conflicting lanes. At a multilane roundabout, check all relevant circulating lanes, not only the one directly beside you.
  6. Stay in your designated lane and exit carefully. Follow the lane markings, use the appropriate exit signal under local rules, and check again for pedestrians and cyclists.

Can you drive straight through from either lane?

Sometimes, but not always. Many two-lane designs permit the right and left lanes to continue straight. Other layouts reserve the right lane for a right turn or direct the left lane elsewhere. The correct answer comes from the advance signs and arrows at that particular roundabout. Do not rely on a general rule when the markings differ.

Should you change lanes inside the roundabout?

No. Choose the proper lane on the approach, then remain in the marked circulating lane until a permitted exit. Do not move sideways across a lane to reach an exit. Lane changes create side-swipe conflicts, especially when drivers in adjacent lanes have different allowed movements.

What if you entered the wrong lane?

Follow the permitted route for the lane you are already in. Do not stop abruptly, reverse, cross solid lines or cut across a neighboring lane to reach the planned exit. Instead, take the safe permitted exit and use streets farther ahead to correct the route. Missing an exit is inconvenient; an unsafe maneuver can cause a collision.

What should you do around large trucks?

Large trucks, buses and other long vehicles may require more room, and trailers can track across lane boundaries or onto a truck apron. Do not drive beside or attempt to pass a large truck inside a roundabout. Give it room to complete its movement. Follow the applicable rules for yielding to large vehicles.

How do you signal and leave the roundabout?

Follow your jurisdiction's turn-signal requirements. In many U.S. driving guides, a right-turn signal before exiting alerts others to your departure. Avoid signaling so early that drivers think you are taking the preceding exit. Stay in the lane designated for your exit and check for people in the crosswalk as you leave.

Practice Safer Roundabout Decisions

National Driver Training helps new drivers build observation, lane-selection and right-of-way skills. Find a driver education program appropriate for your state.

Explore NDT Driver Education Programs

Frequently asked questions about roundabout lane choices

Which lane should I use to turn right at a roundabout?

Generally, choose the right approach lane, unless lane-use signs and pavement arrows direct otherwise. Check the marked route before entering.

Which lane should I use to turn left or make a U-turn?

Generally, use the left approach lane at a typical two-lane roundabout, provided posted signs and pavement arrows permit that movement.

Can I go straight from either lane in a roundabout?

Sometimes. Many two-lane roundabouts permit straight-through travel from either lane, but other layouts do not. Follow the signs and arrows for your specific approach.

Can I change lanes once I enter a roundabout?

Do not change lanes while circulating. Select the permitted lane before entering and stay in that lane through your exit, following lane lines and arrows.

What if I entered the wrong lane at a roundabout?

Do not cut across lanes or brake suddenly. Follow the lane markings to a permitted exit and use a safe route afterward to reach your destination.

Do you have to yield to traffic in both circulating lanes?

At a multilane roundabout, check and yield to circulating vehicles in all lanes that could conflict with your entry. Also watch for pedestrians and bicyclists at crosswalks.

Related driving knowledge guides

Sources and further reading

Published October 29, 2026. Use the posted signs, arrows and local traffic laws at each roundabout.