2009 Edition Part 3 Figure 3C-5. Example of Markings for a Two-Lane Roundabout with One-Lane Exits
Figure 3C-5. Example of Markings for a Two-Lane Roundabout with One-Lane Exits
This figure illustrates markings for a two-lane roundabout with one-lane exits.
A note states: "The marking configuration shown on this figure requires U-turning drivers to change lanes within the circulatory roadway."
The figure shows a green central island surrounded by a circular roadway. A narrow band shown as composed of a contrasting pavement texture separates the island from the circular roadway. Optional diagonal yellow crosshatch markings are shown extending from the pavement around the central island into the circular roadway opposite the points where lanes enter the circular roadway.
Roadways are shown entering the roundabout from the north, south, east, and west. A narrow landscape buffer borders the outsides of the roadways. A triangular splitter island separates the opposing travel lanes of each road where it intersects the circular roadway. A crosswalk composed of a row of closely spaced white lines parallel to the flow of traffic is shown crossing all lanes and the narrow part of each splitter island.
Around the outer edge of the circular roadway, a solid white line is shown across the base of each splitter island, a wide dotted white line is shown intersecting each of the entering lanes, and no line is shown intersecting the exiting lanes.
The roadways entering the roundabout are shown with two lanes on the right side of each splitter island entering the roundabout and one lane to the left exiting the roundabout. The lanes entering the roundabout are shown separated by a solid white line. White arrows are shown marked on the pavement of the each lane entering the roundabout in advance of the crosswalk. A white arrow in each left lane is shown pointing to the left, and a two-direction white arrow in each right lane is shown pointing straight ahead and to the right.
The circular roadway is shown as two lanes, with a solid white line separating the two lanes opposite the splitter islands and changing to a normal broken white line opposite the points where lanes from the roadways enter the roundabout. White arrows pointing to the left are shown marked on the pavement of the left lane, and white arrows pointing straight ahead are shown marked on the pavement of the right lane of the circular roadway.
On the roadway entering the roundabout from the south, the crosswalk is shown crossing the two entering lanes at a right angle, angling to the north, then angling to the west, and then crossing the single exiting lane at a right angle.