FAMs as mapping Light Medium Heavy Short Medium Long 0 0 10 20 30 50 100 150 xn=200 ym=40 Green light duration Traffic density Fig.3 Three possible fuzzy subsets of traffic-density and green light duration,space X and Y.FAMs as mapping = 200 n x 50 100 150 0 1 Light Medium Heavy Traffic density = 40 n 10 20 30 y 0 1 Short Medium Long Green light duration Fig.3 Three possible fuzzy subsets of traffic-density and green light duration, space X and Y