2009 Edition Part 3 Figure 3B-12. Example of Solid Double White Lines Used to Prohibit Lane Changing
Figure 3B-12. Example of Solid Double White Lines Used to Prohibit Lane Changing
This figure illustrates an example of solid double white lines used to prohibit lane changing.
A legend shows a black arrow indicating the direction of travel in the lanes and asterisk to denote "optional."
This figure shows the two lanes of one direction of a divided highway. Black arrows indicate that the direction of travel is from the left of the figure to the right. A solid yellow line is shown on the inside edge of the pavement, and a solid white line is shown on the outside edge. The through lanes are separated from each other by a broken white line. Near the left edge of the figure, a deceleration lane is added to the right of the two through lanes, leading to a right exit ramp. The tapered deceleration lane immediately angles away from the through lanes and is separated from them by a dotted white line. A note shows this as an "optional dotted extension." At the gore, the dotted white line becomes a solid white channelizing line, and another solid white line angles off along the left edge of the exit ramp, forming a white triangle in front of the gore. This triangle or neutral area is shown with white chevron markings. A solid yellow line is shown leaving the base of the triangle to become the inner edge line of the entrance lane to another highway.
The entrance ramp from the first highway joins the leftmost of two through lanes of another divided highway to become a third lane. Black arrows indicate that the direction of travel on this second highway also is from left to right. The solid yellow line from the entrance ramp continues and becomes the yellow inner edge line of the new leftmost lane of the second highway. On the left side of the second highway, a solid yellow line is shown on the inside edge of the pavement, and a solid white line is shown on the outside edge. Where the entrance ramp joins the left lane, the solid yellow line from the left becomes a white line and is joined by the solid white edge line from the entrance ramp. These lines form a solid double white lane line, noted as optional, separating the new leftmost lane from the other two through lanes. To the right of the second highway, the solid double white lane line is shown changing to a broken white line. Where the entrance lane joins the left lane of the second highway, a horizontal white "wrong way" arrow, noted as optional, is shown marked on the pavement of each of the three through lanes.