Custom traffic lights

[OpenAI]

Hello guys, how can i do custom traffic lights? Is it possible? Can you give me some idea, how can i do this?
P.S Custom it's mean that i want replace custom model and make custom system of change signal of traffic light. 
P.S.S Sory of my English, i'm from Russia
thx for help

[JustinMTA]

I can do the models for you if that's what you need.
I'll change the texture names of the lights textures for you to reference them individually.
It'll be an easy thing to do just contact me.