On a 2 phase road, the saturation flow on road A is 1000 and normal flow is 250,whereas on road B the saturation flow is 1500 and normal flow is 500,the total red time is 10 sec, find optimum cycle length.

On a 2 phase road, the saturation flow on road A is 1000 and normal flow is 250,whereas on road B the saturation flow is 1500 and normal flow is 500,the total red time is 10 sec, find optimum cycle length. Correct Answer 37sec

Ya=250/1000=0.4 Yb=500/1500=0.3 Y=Ya+Yb=0.7 C0=1.5*L+5/ (1-Y) C0=1.5*14+5/ (1-0.7) C0=87sec.
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