Glossary

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Citizen Sensing(also: Citizen Sensor, Participatory Sensing)

A data collection approach in which members of the public use mobile devices or other tools to gather and report information about their environment, contributing to collective datasets that can inform decision-making. In accessibility contexts, citizen sensing enables people to…

Crosswalk detection(also: Pedestrian crossing detection, Zebra crossing detection)

The automated identification and localization of marked pedestrian crossings in imagery using computer vision techniques. Crosswalk detection can be performed on satellite images, street-level photographs, or real-time camera feeds to populate navigation databases for blind…

Crowdsourced Accessibility(also: Crowdsourced Accessibility Auditing, Citizen-Sourced Accessibility)

The practice of collecting accessibility information about physical or digital environments through contributions from large numbers of people, rather than relying solely on professional auditors. In the physical accessibility context, crowdsourcing approaches include virtual…

Crowdsourced Accessibility Mapping(also: Collaborative Accessibility Mapping, Citizen-Sourced Accessibility Data)

The practice of using contributions from members of the public to identify, report, and map accessibility barriers and features in physical or digital environments. In urban contexts, crowdsourced accessibility mapping typically involves mobile applications that allow citizens…

Crowdsourced accessibility data(also: Crowdsourced validation, Accessibility crowdsourcing)

The collection, verification, or enrichment of accessibility-related geographic or environmental information through the coordinated efforts of many distributed contributors, often via web-based platforms. Examples include validating automated crosswalk detections, mapping…

Curb Ramp(also: Curb Cut, Dropped Kerb, Kerb Ramp)

A small ramp built into or applied to the curb at pedestrian crossings and other transitions between a sidewalk and a roadway, providing a smooth transition for wheelchair users, people with mobility aids, strollers, and others. Curb ramps are a fundamental element of accessible…

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