Prefix:
BF - Business Farm to Market Road
BI - Business Interstate Highway
BS - Business State Highway
BU - Business US Highway
FM - Farm to Market Road
FS - Farm to Market Road Spur
IH - Interstate Highway
PA - Principal Arterial Street System
PR - Park Road
RE - Recreational Road
RM - Ranch to Market Road
RR - Ranch Road
RS - Ranch to Market Road Spur
SH - State Highway
SL - State Highway Loop
SS - State Highway Spur
UA - US Alternate
UP - US Highway Spur
US - US Highway
Roadway Name:
The middle of the Route ID is the roadway name.
Suffix:
AG = Right Frontage Road
BG = Right Supplemental Frontage Road
GS = Grade Separated Connector
KG = Centerline / Single Roadbed
LG = Left Roadbed
MG = Left Supplemental Mainlane
PG = Left Supplemental Supplemental Mainlane
RG = Right Roadbed
SG = Right Supplemental Mainlane
TG = Right Supplemental Supplemental Mainlane
XG = Left Frontage Road
YG = Left Supplemental Frontage Road
NG = Left Managed Lane
OG = Left Supplemental Managed Lane
UG = Right Managed Lane
VG = Right Supplemental Managed Lane
Example of Texas DOT Route ID:
FM0043-KG
IH0010-KG
IH0035E-KG
SH0016-KG
Note: Off-system roadways may not follow the TXDOT Route ID structure.