I started the basics of Arduino on TinkerCad, and then after I got a hang of the wiring process, I moved onto the actual Arduino. I used a bread board, so I didn't have to solder the wire. I used a common ground, which is represented in the blue wire. Pins 13, 12, and 11 are assigned to a specific pin, so when I write the code they work.
My code starts with the opening syntax, "void setup ()" and then continued to my output commands where I would define each of my pins. I then use the "void loop()" command to set up the rest of the code on a loop. This loop is separated into 3 sections where I use time delays, so I have one light on at a time and the other two off.
As shown in the picture,
digitalWrite (13, HIGH);
digitalWrite (12 LOW);
digitalWrite (11 LOW);
This switches as then the other two pins take place of pin 13 and look like the code in the picture beside.
This is the video of the Traffic Lights in action!!