Traffic Signal Clearance chart
Traffic Signal Clearance chart
(OP)
I am a junior traffic Engineer, and I have being struggling to understand the arrangement of the traffic signal clearance chart. Can anyone help?
Thanks in advance
Thanks in advance





RE: Traffic Signal Clearance chart
RE: Traffic Signal Clearance chart
What I meant with the Clearance chart is a chart that usually prepared by the signal designer showing the sequence and display of all of the traffic heads during a complete cycle length, ie green, yellow and red and which phase clears to which phase and so on.
RE: Traffic Signal Clearance chart
The manufacturer of the signal cabinet uses the chart to design the cabinet wiring, assigning the signal head wiring to the appropriate cabinet load-switch. The load switches (one for each signal phase)are used to activate the various displays (RYG) in the signal heads. The interval timing is used to program the basic operating parameters.
Our Phase & Timing Chart does not show the signal phase sequence (1-2-3 or other), we utilize a separate phase sequence diagram to illustrate the phase sequence and the organization (single-ring, dual-ring, multiple-ring) of the phases.
Is this helpful?
RE: Traffic Signal Clearance chart
Thank you Leeman