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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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External Human-Machine Interface(also: eHMI, External HMI)
A class of interfaces on the exterior of a vehicle — typically an automated or autonomous vehicle — designed to communicate the vehicle's intent, awareness, or state to pedestrians, cyclists, and other road users who would otherwise rely on cues from a human driver (eye contact,…

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