I have all the other code I just need help with the night mode emergency push button code. Modify project $1$ to simulate the working of two sets of traffic lights at an intersection as shown below. Here

are the sequence of events:

a$.$ When program starts, all traffic lights will be red for $2$ seconds.

b$.$ The green lights for the two left arrows turn on simultaneously.

c$.$ After $6$ seconds, the two left arrows will go to amber and then red.

d$.$ After $2$ seconds from the left arrows being red to clear the intersection, the E$-$W and W$-$E lights will

turn green.

e$.$ After $8$ seconds, the W$-$E and E$-$W lights will go to amber and then red together.

f$.$ After $2$ seconds from all lights to be red to clear the intersection, the N$-$S and S$-$N lights will go

green together.

g$.$ After $8$ seconds, the N$-$S and S$-$N lights will go to amber and then red together.

h$.$ The E$-$W pedestrian light will be green when the N$-$S light is green and red otherwise. The N$-$S

pedestrian light will be green when the E$-$W light is green, red otherwise.

i$.$ The pattern will repeat again starting at point $($a$)$ above.

$2.$ Add a night$/$emergency pushbutton such that if it is pressed at any moment, the current traffic cycle in

either the E$-$W $($including the arrow$)$ or N$-$S direction will finish its normal sequence but will not go to the

next direction. Instead, the system will flash red lights for the N$-$S and yellow lights for the E$-$W until the

emergency button is pressed again. Pedestrian lights should flash red only. Note that the pushbutton

should be pressed once to activate the emergency mode. No need to hold the pushbutton to activate. If the

emergency button is pressed while ALL lights are red, there is no need to start a new cycle.