We want to create an illustration for a traffic management system that we are currently developing. In the future, we might want to create an animation in Flash of the system, so please have that in mind. I am attaching a quick and dirty illustration made in PowerPoint to show the idea. We want a technical looking illustration but attractive. The project will probably require further graphic design in due course: logo, website, diagrams and animations, but for the time being we just want an illustration to show the concept.