Choose your lane as you approach the twin-ring, two-lane Bell Tower roundabout on Hillsborough Street at Pullen Road (see today's Road Worrier column, with reader comments).
Which lane? Depends on where you are and where you're heading. Raleigh's only two-lane roundabout is not a simple concentric affair. It's asymmetrical, half circle and half spiral, one lane on the east side and two lanes elsewhere.
The bird's-eye view recalls the spiraling start of Dorothy's yellow-brick road to Oz. (She and her friends were cheerful when they started out, but they soon had trouble finding their way.)
The important things to know about this and all roundabouts: Yield and look to your left before entering. Traffic in the roundabout has the right of way.
For more details, check out the city of Raleigh's new instruction manual for the Bell Tower roundabout.