The evacuation of New Orleans in response to Hurricane Katrina was considered relatively successful for people with their own vehicles; approximately 1 million people evacuated Louisiana prior to landfall. In contrast, about 100,000 people were not evacuated prior to the storm—many of whom lacked access to a vehicle. Hurricane Katrina ultimately resulted in over 1,300 deaths. Among those who could not evacuate were some of society’s most vulnerable populations: the elderly, low-income individuals, and persons with disabilities. These populations often lack the ability to provide for their own transportation and may also have difficulty accessing conventional public transportation. As a result, evacuating these “transportation-disadvantaged” populations during emergencies has become an important topic of public policy discussion. Evacuations of varying scales are common in the United States and can be triggered by a variety of events, including natural disasters such as Hurricanes Katrina and Rita, wildfires, and terrorist attacks like those committed on September 11, 2001. In fact, emergency evacuations of more than 1,000 people occur more than three times a month.