Section 21: County Line Signs
Expressways and Freeways
County line signing for expressways and freeways should conform
to the (TMUTCD).
An I-2d type sign design should be used, incorporating a recommended
minimum 8-inch letters.
for
the I-2d type sign can be found in
Standard Highway
Sign Designs for Texas
(SHSD).Placement
On low-volume farm to market roads, county line signs may
be mounted back-to-back. High-volume farm to market roads and U.S.
highways should use independent mounts for county line signs in
each direction.