Evacuation Carriers by Garaventa Ask An Expert View Brochure (PDF) Send Me a Brochure Request a Quote Or give us a call: 888-257-5576 Designed so that a small attendant can easily move a much larger passenger down the stairs, the Evacu-Trac is easily set up and ready for a passenger to transfer from their wheelchair to the comfortable sling seat. This evacuation chair has durable rubber tracks that firmly grip the stairs and the safety brake can stop the unit on the stairs if necessary. The Evacu-Trac is completely stable and self-supporting on flat surfaces and during descent.