The present invention is directed to a web-based system and method for managing traffic and congestion associated with large events while decreasing operating costs and increasing event revenues. A user accesses a webpage to purchase a parking pass for a predetermined event via a user interface. Once the parking lot has been determined and the spectator charged for the pass, a customized map and driving directions are generated for the spectator, detailing the route to the event the spectator is to follow. The system gives the event management advanced revenues and planning information to devise evacuation plans, emergency response plans, security, and traffic pattern designs.