Corner equipment can vary from track to track, but usually includes a communication system of either telephone lines or radios: a set of race control flags; brooms and oil/coolant absorbent material; fire extinguishers and fire-resistant gloves; pry bar; a supply of corner report forms; and perhaps a first aid kit, bug spray, and other amenities. Most, though not all, corners have gazebos for protection from sun and wind. The average station area is about , and may be square where concrete or grass pad is available, or long and narrow behind barriers. No matter what the shape, the station must be visible so approaching drivers can see flags and hand signals.