Could someone tell what's with my haskell code?

It can not work as requirements. And what number should I use in the code pf traffic controller?

Exercise 1: Traffic lights A Submission required exercise 1 In the live coding lecture, we defined a traffic light animation in CodeWorld. That traffic light had only red and green lights. However, most traffic lights also have a yellow light in the middle In this exercise you are asked to change the code to include the yellow light and animate the following sequence of traffic light signalling in a loop a long green phase a short yellow phase a long red phase back to green Here is how it should look CII The resulting program should be called exercisel