Question

A 3 phase traffic signal is designed with 2 seconds of all red per phase and phase lengths of 25 seconds, 30 seconds, and 15 seconds. The cycle length is ____ seconds.

Answer 1

Answer:

$CL=76secs$

Step-by-step explanation:

From the question we are told that:

Traffic Phases p=3

Phase time Lengths

25 seconds, 30 seconds, and 15 seconds

Red Per Phase $T=2sec$

Generally the equation for Cycle Length is mathematically given by

 $CL=Phase\ Length+Red\ Per\ Phase$

 $CL=(25+2)+(30+2)+(15+2)$

 $CL=76secs$