Sideproject - Traffic Controller Logic

To all,

This is a side project which gave me a deeper appreciation of traffic lights. Considering the difficulty of the project I first started with a timing diagram. I don't have a log of my progression, though, I can show you the final product (Diagram & Ladder logic). Please, critique my work. I'm here to learn.

Tx

Edit: I found a textual error in the ladder PDF on page 2 rungs 9 & 10. If I can correct myself, that should really be Green. (Green is on for two seconds at that state.)

http://accautomation.ca/building-a-plc-program-that-you-can-be-proud-of-part-1/
The above is a series of post that will go through building a traffic light in a couple of different ways. Bit/Timers as you have done and indirect addressing which will look at the program differently.
This will build your learning.
If you have any questions, please contact me.
Regards,