Purpose:

Lane Designation auxiliary signs are used to direct a motorist to the proper lane for making a turn or following a numbered route. A Lane Designation auxiliary sign is mounted below the route sign(s) to which it applies.

Lane Designation auxiliary signs are typically used in developed urban areas. They are only used when there are two or more through lanes in one direction. They may be used in a Junction Assembly (page 3-28) or as a separate assembly. Figure 3-13 illustrates Lane Designation auxiliary signs.

The Lane Designation assembly is normally erected in two consecutive blocks, usually the third and fourth blocks, in advance of the highway turn or junction with another highway.

Figure 3-13. Lane Designation Auxiliary

Signs