DOTTED LINES
DOTTED lines provide additional guidance on travel paths through intersections or other areas. [MUTCD Section 3A.01] A DOTTED LINE might be used to better delineate turning paths for single or multi-lane turning movements within intersections and to extend a centerlines or lane lines through a large intersection or an intersection with an offset or "jog". [MUTCD Section 3B.08]
A special DOTTED lane line along the left side of a travel lane indicates that the lane is changing from a general travel lane to an "Exit Only" lane. That is, traffic in that lane will be required to exit at the next interchange exit ramp and will not be allowed to continue along the main roadway of the highway. The normal broken (dashed) white lane line changes to the special DOTTED lane line about a half-mile or more before the exit. [MUTCD Section 3B.05]
Where the pavement widens out at the start of a separate turn lane or a deceleration lane for an exit ramp, a DOTTED LINE is sometimes used to extend the edgeline and give drivers a clearer delineation of where to start moving over into the added lane. [MUTCD Section 3B.08]
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