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This study reports on an experiment in downtown Seattle, Washington, to evaluate whether installing a public real-time multi-modal transportation information display screen in an office building lobby caused changes in building occupant self-reported awareness, attitudes, satisfaction, and usage of alternative transportation modes including transit, car-sharing, ride-sourcing, and bike-sharing services. Workers in the test building and two nearby control buildings were surveyed immediately before the screen was installed (N=550) and again six months later (N=455). Little evidence was found that exposure to the real-time display affected respondent travel choices, satisfaction, familiarity, or attitudes toward alternative modes. Although most respondents (70%) had noticed the screen and had generally positive reactions, two-thirds of this group never actually used it. These results, along with building occupant …