Other Auxiliary Signs (Texas MUTCD, Section 2D.16 to 2D.24)
There are several other types of auxiliary signs that may be used with route signs. They are described below and illustrated in Figure 3-14.
- ALTERNATE auxiliary sign (Texas MUTCD 2D.17):The ALTERNATE auxiliary sign is used to identify a designated Alternate Highway. The ALTERNATE auxiliary sign is mounted above the route sign.
- BY-PASS auxiliary sign (Texas MUTCD 2D.18):The BY-PASS auxiliary sign is used to identify a route that branches from the numbered route through a city, bypasses a part of the city or congested area, and rejoins the numbered route beyond the city. The BY-PASS auxiliary sign is mounted above the route sign.
- BUSINESS auxiliary sign (Texas MUTCD 2D.19):The BUSINESS auxiliary sign is used to identify a designated Business Highway. The BUSINESS auxiliary sign is mounted above the route sign.
- TRUCK auxiliary sign (Texas MUTCD 2D.20):The TRUCK auxiliary sign is used to designate an alternate route for trucks to avoid congested areas or areas that have height or weight limitations. The TRUCK auxiliary sign is mounted above the route sign. TRUCK auxiliary signs are used as part of a Trailblazer Assembly.
- TO auxiliary sign (Texas MUTCD 2D.21):The TO auxiliary sign is used as a trailblazer to indicate the route to a nearby highway that is not located at the current intersection or interchange. The TO auxiliary sign is mounted above the route sign. TO auxiliary signs are used as part of a Trailblazer Assembly (page 3-33).
- END auxiliary sign (Texas MUTCD 2D.22):The END auxiliary sign is used to inform the motorist that the designated route is terminating. The END auxiliary sign is mounted above the route sign or above a sign for an alternative route.
- BEGIN auxiliary sign (Texas MUTCD 2D.23):The BEGIN auxiliary sign is used to inform the motorist that the designated route is beginning. The BEGIN auxiliary sign is mounted above the first confirming assembly for a route that is beginning.
- TEMPORARY auxiliary sign (Texas MUTCD 2D.24):The TEMPORARY auxiliary sign is used for an interim period to designate a section of the highway that is not planned as a permanent route, but that connects completed portions of that route. The TEMPORARY auxiliary sign is mounted directly above the route sign, Cardinal Direction sign, or above a sign for an alternative route.

Figure 3-14. Other Auxiliary Signs