Project Management

This is a group work of five and everyone has a task to do. My task is to write about the Traffic Control (Travelling) or (Transportation).
The topic chosen as a group is Olympics -venue building and site.
In deliverables part:
We will do a presentation covering point 1 and 2. As you can see in point 1we have to present five issues regarding our topic. You should write about Traffic Control (Travelling) or (Transportation) as one issue that may appear in the Critical Path of the project.
This is a Project Management course all references and information should be relative.