Section 544.001 of the Texas Transportation Code requires TxDOT to adopt a manual and specifications for a uniform system of traffic control devices for use on streets, roads, and highways within the state. The uniform system must correlate with and, so far as possible, conform to the system then current as approved by the Federal Highway Administration (FHWA) and set forth in the

National Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD)

. The

Texas Manual on Uniform Traffic Control Devices (TMUTCD)

basically follows the national

MUTCD

, except where the national standards conflict with state law or where modifications are necessary to more closely fit Texas conditions. The Texas Transportation Commission originally adopted the 2011 TMUTCD with Minute Order No. 112903 on November 17, 2011. The Commission adopted the current version,

2011 TMUTCD, Version 2

, with Minute Order No. 113938 on May 12, 2014, as referenced in 43 TAC, § 25.1. References to the TMUTCD throughout this manual refer to the 2011 TMUTCD, Revision 2.