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.