Traffic light using a pico

Hi, can i use a pico to control a single traffic light for a school project?

You should be able to, provided you have enough I/O and knowledge.

Knowledge is the problem.
can anyone help.

Here are some general guidelines. The "Search" function at the top of the page will provide many hints. Type "traffic + light" (without the quotes).
You can start by naming each output like east-west green, north-south red, and so on. Next you'll need some timers to set how long which outputs are on. Next, go watch a real traffic light in action and write down exactly what is happening and when, step by step. That will help you determine what is needed on each program rung. Next learn how use the pico programming software. Study hard, try to write the program, post your efforts, ask specific questions if you get stuck or don't understand a particular item.