2009 Edition Part 3 Figure 3C-4. Example of Markings for a Two-Lane Roundabout with One- and Two-Lane Approaches (Sheet 1 of 2)
Figure 3C-4. Example of Markings for a Two-Lane Roundabout with One- and Two-Lane Approaches (Sheet 1 of 2)
This figure illustrates markings for a two-lane roundabout with one- and two-lane approaches. The figure is composed of two sheets.
Sheet 1 shows one figure, labeled "A – unextended central island." 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.
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 from the north and south are shown with two lanes on each side of the splitter island. The lanes entering the roundabout are shown separated by a broken white line, which changes to a solid white line on both sides of the crosswalk. Two-direction white arrows are shown marked on the pavement of the each lane entering the roundabout in advance of the crosswalk. The arrow in each left lane is shown pointing to the left and straight ahead, and the arrow in each right lane is shown pointing straight ahead and to the right. The circular roadway at the end of the splitter islands for these north and south roadways is shown as one lane, with a two-direction white arrow pointing to the left and straight ahead shown marked on the pavement of the circular roadway.
The roadways entering the roundabout from the east and west are shown with one lane on each side of the splitter island. The circular roadway at the end of the splitter islands for these north and south roadways 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 where single lanes from the east and west roadways enter the roundabout.
Continue to: Sheet 2