augmentative mobility— All means of locomotion that supplement ambulation (Case-Smith, Allen, & Pratt, 1996).

certified driver rehabilitation specialist— An individual who meets the educational and experiential requirements and successfully completes the certification exam provided by the Association of Driver Rehabilitation Specialists (ADED, 2004).

driver rehabilitation specialist— A specialist who “plans, develops, coordinates, and implements driver rehabilitation services for individuals with disabilities” (ADED, 2004).

driver rehabilitation therapist— An allied health professional with specialized training, experience, and credentials in driver rehabilitation services, including evaluating and training people with disabilities in driving or safe transportation (Pierce, 2002).

community mobility— “Moving self in the community and using private or public transportation, such as driving or accessing buses, taxi cabs, or other public transportation systems” (American Occupational Therapy Association, 2002, p. 620).

driver educator— A professional with a college degree in education with specialized study in driver education or traffic safety.

driver safety— Operation of a motorized vehicle, with or without adaptive equipment, to travel in a safe manner in coordination with other drivers on public roadways to a desired destination.

driving instructor— As required by many states, an individual with a high school degree and a clear legal and driving record who has completed a driver education training program and has been licensed as a driving instructor by the state motor vehicle administration.

ecological validity— The degree to which standardized test results can be used to generalize and predict an individual’s performance in a naturalistic environment (Hart & Hayden, 1986).

environmental scanning— A process of analyzing trends that allows decision makers both to understand the external environment and the interconnections of its various sectors and to translate this into planning and decision-making processes (Morrison, 1992).

operational demands of driving— Basic control of a motorized vehicle, such as steering, acceleration, and braking functions (Michon, 1979).

strategic demands of driving— The highest level of the three demands of driving; involves judgment, planning, and foresight, such as choosing to reschedule a trip due to a snow storm (Michon, 1979).

tactical demands of driving— Ongoing decisions made while interacting with traffic while driving, such as time and space judgment of a safe gap in traffic to execute a left turn (Michon, 1979).

transportation alternatives— Having a choice of more than one means of moving oneself about in the community.