ii$.5$ seconds on vellow

iii. $20$ seconds on red

b$.$ Light $3$ & $4$

i$.20$ seconds dwell on green

ii$.5$ seconds on yellow

iii. $40$ seconds on red

c$.$ When Light $182$ are green, Light $384$ must be red

d$.$ When Light $3$&$4$ are green, Light $1$&$2$ must be red

e$.$ When Light $1$&$2$ turns yellow, Light $3$&$4$ should stay red

f$.$ When Light $3$&$4$ turns yellow, Light $1$&$2$ should stay red

Assume clock period is $5$ seconds

There will be $6$ outputs:

a$.$ L$12\_$EW$\_$Grn

b$.$ L$12\_$EW$\_$Yw

c$.$ L$12\_$EW$\_$Rd

d$.134\_$NS$\_$Grn

e$.$ L$34\_$NS$\_$Yw

f$.$ L$34\_$NS$\_$Rd

At any given time, these signals should follow the rules specified in $4)$ c$.$f$.$ above.

Hints

$(1)$ What happen when there are cars on the N$/$S direction always causing the set of sensors to trigger

all the time?

$(2)$ Can you solve this issue with another set of sensors place on the E$/$W road?

$(3)$ How would you design the FSM so that during very busy hours of traffic we fall back to the $40+5$

seconds and $20+5$ seconds scheme in assignment $3$ task $4?$