Interviewer asked me to design traffic signal logic in simlink in one of my interview which iam unable to design. can anyone help me with the same?

Interviewer asked me to design traffic signal funtion in simlink in one of my interview which iam unable to design. can anyone help me with the same?

[Aquatris]

What do you want to use? State flow diagrams (here is an example) in simulink or simple simulink blocks like switch block etc (here is that example)?