Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Seating capacity refers to the number of people who can be seated in a specific space, both in terms of the physical space available, and in terms of limitations set by law. Seating capacity can be used in the description of anything ranging from an automobile that seats two to a stadium that seats over 100,000 people. The largest sporting venue in the world, the Indianapolis Motor Speedway, has a permanent seating capacity for more than 257,000 people and infield seating that raises capacity to an approximate 400,000. Safety is a primary concern in determining the seating capacity of a venue, as "[s]eating capacity, seating layouts and densities are largely dictated by legal requirements for the safe evacuation of the occupants in the event of fire".