Question

Goal: Learn to implement classes.

Assignment: As part of an upgrade the city is doing on its urban system, you are tasked with writing the backing library for the city traffic

monitoring system. As the system works on the public grid it must be secure$.$ You start from the old library, but all the class properties are

public.

Rewrite the provided TrafficLight class, making sure all the fields are encapsulated correctly and provide appropriate getter and setter

methods.

Note: only write the implementation of the class, do not write its declaration.