Specifications include, but are not limited to: Item 1: - Traffic Signal Head Assembly, 12”, 3-section. One-way, 3-section, 12" polycarbonate traffic signal head assembly, black, with 5" aluminum one-piece non-vented backplate and aluminum tunnel visors oriented for horizontal mounting. All backplates and visors shall be powdercoated black. Signal head assemblies shall be shipped assembled, except backplates, and ready for LED signal display modules with spade connectors. Product bid shall be included on Texas Department of Transportation (TxDOT) Material Producer’s List (MPL) of DMS 11120, (Vehicle Signal Heads) dated 10/08/2014. See the following for a list of approved products: ftp://ftp.dot.state.tx.us/pub/txdot-info/cmd/mpl/qtrfsigeqp.pdf. Include manufacturer name and part number on bid sheet. Item 2:- Traffic Signal Head Assembly, 12”, 4-section. One-way, 4-section, 12" polycarbonate traffic signal head assembly, black, with 5" aluminum one-piece non-vented backplate and aluminum tunnel visors oriented for horizontal mounting. All backplates and visors shall be powdercoated black. Signal head assemblies shall be shipped assembled, except backplates, and ready for LED signal display modules with spade connectors. Product bid shall be included on TxDOT Material Producer’s List (MPL) of DMS 11120, (Vehicle Signal Heads) dated 10/08/2014. See the following website for a list of approved products: ftp://ftp.dot.state.tx.us/pub/txdot-info/cmd/mpl/qtrfsigeqp.pdf. Include manufacturer name and part number on bid sheet. Item 3: - Traffic Signal Head Assembly, 12”, 5-section. One-way, 5-section, 12" polycarbonate traffic signal head assembly, black, with 5" aluminum one-piece non-vented backplate and aluminum tunnel visors oriented for horizontal mounting. All backplates and visors shall be powdercoated black. Signal head assemblies shall be shipped assembled, except backplates, and ready for LED signal display modules with spade connectors. Product bid shall be included on TxDOT Material Producer’s List (MPL) of DMS 11120, (Vehicle Signal Heads) dated 10/08/2014. See the following website for a list of approved products: ftp://ftp.dot.state.tx.us/pub/txdot-info/cmd/mpl/qtrfsigeqp.pdf. Include manufacturer name and part number on bid sheet. Item 4: - Traffic Signal Head, 12”, HAWK Configuration. One-way, 3-section, 12" polycarbonate traffic signal head assembly, black, with aluminum non-vented backplate and aluminum tunnel visors oriented for horizontal mounting. Signal head assembly shall include all necessary hardware required to form a complete assembly meeting the Texas Manual on Uniform Traffic Control Devices (TMUTCD) requirements for a 3-section HAWK Beacon display (3 total sections, arranged with 2 upper sections with the third section centered below the upper sections. Backplate and visors shall be powdercoated black. Signal head assembly support hardware shall be non-colored aluminum. HAWK Signal head assemblies shall be shipped assembled with backplate, and ready for LED signal display modules with spade connectors. Product bid shall be included on TxDOT Material Producer’s List (MPL) of DMS 11120, (Vehicle Signal Heads) dated 10/08/2014. See the following website for a list of approved products: ftp://ftp.dot.state.tx.us/pub/txdot-info/cmd/mpl/qtrfsigeqp.pdf. Include manufacturer name and part number on bid sheet.