The Mobility Agents Engine is the main component of the Mobility Agents architecture; this engine serves as a central information hub between transportation systems, caregivers (e.g., parents or professional care providers helping persons with cognitive disabilities) and travelers (persons with cognitive disabilities). Mobility Agents inside the Mobility Agents Engine provide destination options, receive user choices, analyze bus information, and correlate locations of travelers and buses. Mobility Agents turn general bus information at the syntactic level into personally relevant information at the pragmatic level. This pragmatic information is wirelessly transmitted through a second Web server to a handheld device carried by the traveler. Customized attention and memory prompts based on the travelers’ goals, user preferences, and cognitive abilities appear on the traveler’s handheld computer. These prompts are manifested as voice, sound, animation, text, and iconic representations, and they perform various functions. For example, specific prompts alert the traveler that their bus is approaching.