1. (a) The Texas Manual on Uniform Traffic Control Devices for Streets and Highways, 1980 edition, as amended by Revision Number 7, which is filed with this section and hereby incorporated by reference, was prepared as required by law to govern standards and specifications for all such traffic control devices to be erected and maintained upon all highways within this state, including those under local jurisdiction. Copies of the manual may be obtained at the Texas Department of Transportation, 125 East 11th Street, Austin, Texas, 78701, and are on file for public inspection with the Office of the Secretary of State, Texas Register Division, James Earl Rudder State Office Building, Room 245, Austin, Texas, 78711.
2. (b) This manual will be periodically updated. In the intervals between updates, standards contained in "Official Rulings on Requests for Interpretations, Changes, and Experimentation" to the United States Department of Transportation's Manual on Uniform Traffic Control Devices for Streets and Highways will be inserted in this manual and may be used as interim standards.
3. (c) This manual is not intended to preclude the use of sound engineering judgment and experience in the application and installation of devices, and particularly, in those cases not specifically covered which must not conflict with the manual or other applicable state laws.
4. (d) This manual will be sold for a price based upon the then current cost to the department, except that certain public entities may be entitled to free copies.

Source Note:The provisions of this §25.1 adopted to be effective January 1, 1976; amended to be effective August 26, 1976, 1 TexReg 2240; amended to be effective February 27, 1977, 2 TexReg 623; amended to be effective January 3, 1978, 2 TexReg 4917; amended to be effective December 13, 1978, 3 TexReg 4151; amended to be effective August 28, 1979, 4 TexReg 2863; amended to be effective October 19, 1979, 4 TexReg 3716; amended to be effective January 29, 1980, 5 TexReg 138; amended to be effective December 1, 1980, 5 TexReg 4264; amended to be effective September 2, 1981, 6 TexReg 3011; amended to be effective February 15, 1983, 8 TexReg 402; amended to be effective February 17, 1984, 9TexReg 500; amended to be effective March 21, 1989, 14 TexReg 1294; amended to be effective March 30, 1994, 19 TexReg 1832; amended to be effective December 5, 1995, 20 TexReg 9749; amended to be effective January 10, 1999, 24 TexReg 169.