6-14-93

SIGNAL CONTROLLERS

805-T-095

 

The Standard Specifications are revised as follows:

SECTION 805, AFTER LINE 395, INSERT AS FOLLOWS:

805.13.1 Controllers. Traffic signal controllers shall be equipped with a keyboard entry or keyboard entry backlit liquid crystal display. Signal controllers shall be menu-driven and shall contain internal modules for pre-emption, time base coordination, telemetry, interconnection, and printer interfacing. The printer interface module shall allow for a hardcopy printout of all keyboard settings. The signal controller shall employ circuit designs consistent with the latest techniques, by means of a microprocessor to implement the control logic.