EET_Student:
For my substitute of multisim gates i'll be using a Fritzing diagram.
Seriously? You're electronics student? Nearing degree? And you don't even know how to draw a real circuit diagram or see at a glance why Fritzing is a no-go for any even remotely serious work? Getting a Fritzing for circuit diagram would be pretty much an automatic Fail if I would have to to grade the project.
EET_Student:
green 1, yellow 1, red 1, pedestrian, green 2, yellow 2, red 2, cycle back over.
These requirements are not even secondary school project worthy. Indeed just a list of digitalWrite() and delay() calls in loop() would do the job just fine.
Either you're not an EET student or the level of education in your part of the world is outright TERRIBLE.