Glossary

Search results

ADA Transition Plan(also: ADA Self-Evaluation and Transition Plan, Accessibility Transition Plan)

A document required under Title II of the Americans with Disabilities Act (ADA) that outlines how a public entity will make its programs, services, activities, and facilities accessible to people with disabilities. The plan must include an inventory of accessibility barriers, a…

Access aisle

A marked, level area adjacent to an accessible parking space that provides critical clearance for people with disabilities to deploy wheelchairs, ramps, or other mobility devices when entering and exiting vehicles. Access aisles must be at least 60 inches wide and are typically…

Accessible Transportation(also: Inclusive Transportation, Transportation Accessibility)

Transportation systems, vehicles, infrastructure, and services designed to be usable by people with disabilities, including those with mobility, vision, hearing, and cognitive impairments. Accessible transportation encompasses physical features (wheelchair ramps, tactile paving,…

Accessible parking(also: Disability parking, Handicapped parking, Reserved parking)

Designated parking spaces that meet specific design requirements under the Americans with Disabilities Act (ADA) and similar regulations to ensure equitable access for people with disabilities. Accessible parking spaces must have minimum dimensions, adjacent access aisles for…

Audible Pedestrian Signal(also: APS, Accessible Pedestrian Signal)

A device attached to a pedestrian crossing traffic signal that conveys the WALK and DON'T WALK phases through non-visual cues — typically beeps, chirps, speech messages, or a vibrating tactile arrow indicating the direction of travel. APS support safe crossing for blind and…

Barrier-Free Housing(also: Accessible Housing, Barrierefrei)

Housing designed or modified to be usable by people with disabilities, typically addressing physical access features such as step-free entry, wide doorways, accessible bathrooms, and adjustable fixtures. In practice, barrier-free housing standards and filters on…

Bus stop accessibility(also: Accessible bus stops, Bus stop landmarks)

The design, infrastructure, and information features that make bus stops findable, identifiable, and usable by people with disabilities. For blind and low-vision riders, bus stop accessibility depends heavily on the presence of detectable physical landmarks such as shelters,…

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…

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

A sloped transition between a sidewalk and a street that allows wheelchair users, people with strollers, and others to cross without navigating a vertical curb. Curb ramps are essential infrastructure for pedestrian accessibility—their absence, poor maintenance, or improper…

Detectable Warnings(also: Detectable Warning Surfaces, Tactile Warning Surfaces)

Detectable warnings are standardised tactile surface features installed on walking surfaces to alert people with visual impairments to hazards or transitions — most commonly the edge of a transit platform, the bottom of a curb ramp, or the junction between pedestrian and…

Environmental Legibility(also: Legibility of the Environment, Spatial Legibility)

The ease with which people can perceive, understand, and form mental maps of a physical environment in order to orient themselves and navigate through it. Coined by urban planner Kevin Lynch, legibility refers to the visual clarity of a cityscape or built environment — how…

First-mile last-mile(also: First and last mile, FMLM)

The beginning and end segments of a public transit journey — travelling from one's origin to the transit stop (first mile) and from the destination stop to the final destination (last mile). These segments are often the most challenging for people with disabilities because they…

Grab Bar(also: Safety Rail, Support Bar, Handrail)

A rigid, wall-mounted bar designed to provide support and stability for people who need assistance maintaining balance, transferring between positions, or preventing falls. Grab bars are most commonly installed near toilets, bathtubs, and showers, but may also be placed in…

Home Accessibility Audit(also: Home Safety Assessment, Indoor Accessibility Assessment, HSSAT)

A systematic evaluation of a residential space to identify barriers to access, safety hazards, and opportunities for modification to support people with disabilities, older adults, or families with young children. Audits typically use standardized checklists — such as the Home…

Indoor Accessibility(also: Home Accessibility, Domestic Accessibility)

The degree to which indoor spaces — including homes, workplaces, and public buildings — can be safely and independently used by people with disabilities. Indoor accessibility encompasses physical features such as door widths, counter heights, light switch placement, grab bar…

Luminance Contrast(also: Brightness Contrast)

The difference in perceived brightness between two adjacent surfaces or objects, as opposed to color contrast which involves differences in hue. Luminance contrast is particularly important for people with low vision, as many have difficulty distinguishing colors but can detect…

Micromobility(also: Shared Micromobility, Micro-Mobility)

Micromobility refers to small-scale, lightweight, networked transportation vehicles used to travel short distances, typically weighing under 500 kg and traveling at low to moderate speeds. Examples include e-scooters, dockless bicycles, electric bikes, and seated scooters…

Paratransit(also: Demand-responsive transit, Dial-a-ride)

A flexible, on-demand public transportation service that provides rides to people with disabilities who are unable to use fixed-route bus or rail systems. In the United States, the Americans with Disabilities Act requires transit agencies to offer complementary paratransit…

Pedestrian Crossing(also: Crosswalk, Zebra crossing, Pedestrian crosswalk)

A designated location on a road where pedestrians have legal priority, guidance, or protection to cross, typically marked by paint (zebra or ladder stripes), signs, or signal-controlled infrastructure. Pedestrian crossings range from unmarked mid-block crossings through…

Physical Accessibility(also: Physical Access, Architectural Accessibility)

Physical accessibility refers to the design of buildings, environments, and public spaces so they can be independently used by people with physical disabilities, including those who use mobility aids. It encompasses features such as ramps, elevators, accessible restrooms,…

Place Attachment(also: Sense of Place)

Place attachment is the emotional and cognitive bond a person forms with a particular location — a home, neighbourhood, city, or landscape — built up through memory, repeated experience, social ties, and meaning-making. It is studied in environmental psychology, urban planning,…

Public Transport Accessibility(also: Transit Accessibility, Accessible Public Transportation)

The design of buses, trains, stations, stops, timetables, and associated services to be usable by people with all types of disabilities. This includes physical features (ramps, lifts, tactile paving, audio announcements), information accessibility (large print, screen reader…

Right-of-Way(also: Pedestrian Right-of-Way, ROW)

Right-of-way refers to the legal right of a pedestrian, vehicle, or other entity to proceed with precedence over others in a specific area of public space. In accessibility, pedestrian right-of-way is critical because sidewalks, curb ramps, and crosswalks are essential pathways…

Sensory Sensitivities(also: Sensory sensitivity, Sensory processing differences)

Heightened or reduced responses to everyday sensory input — noise, light, glare, texture, smell, temperature, or movement — that significantly affect attention, regulation, comfort, and participation. Sensory sensitivities are commonly reported among autistic people and others…

Step-Free Access(also: Level Access, Barrier-Free Access)

A route or entrance to a building, transport station, or public space that does not require the use of steps or stairs, enabling access for wheelchair users, people with mobility impairments, parents with pushchairs, and travellers with heavy luggage. In transport contexts,…

Surface Level Change(also: Elevation Change, Grade Change)

Any change in the height of the ground or floor surface, including stairs, curbs, ramps, steps, potholes, and raised thresholds. Surface level changes are a significant mobility challenge and safety hazard for people with low vision and other disabilities. Detecting these…

Tactile Dome(also: Truncated Dome, Detectable Warning Surface)

Small raised bumps arranged in a grid pattern on ground surfaces to provide a tactile warning of an upcoming hazard, such as a curb edge, train platform edge, or street crossing. Tactile domes are part of the broader category of tactile walking surface indicators and are…

Tactile Paving(also: Tactile Ground Surface Indicators, TGSI, Detectable Warning Surface)

A system of textured ground surface indicators installed on footpaths, train platforms, and building floors to assist pedestrians who are blind or have low vision with navigation and hazard detection. Tactile paving typically uses two patterns: raised dots (truncated domes) to…

Tactile Signage(also: Tactile Signs, Touch-Readable Signs)

Signs designed to be read by touch, typically featuring raised lettering, Braille text, or tactile symbols. Required in many jurisdictions under accessibility legislation such as the Americans with Disabilities Act (ADA), tactile signage is placed at standard locations like room…

Tactile paving(also: Tactile ground surface indicators, TGSI, Detectable warning surface)

A system of textured ground surfaces installed on footpaths, transit platforms, and pedestrian crossings to provide navigational cues to people with visual impairments through the sense of touch underfoot or via a white cane. Standardised patterns include raised dots (warning of…

Talking Lights

Talking Lights is a commercial location-signalling system that modulates ordinary fluorescent light fixtures to transmit an inaudible digital signal, which a hand-held receiver carried by a blind user decodes into spoken information about the current location (for example, a…

Transit accessibility(also: Public transportation accessibility, Accessible transit)

The degree to which public transportation systems — including buses, trains, subways, and associated infrastructure like stops, stations, and information systems — are usable by people with disabilities. Transit accessibility encompasses vehicle design (ramps, priority seating,…

Travel Chain(also: Mobility Chain, Journey Chain)

A travel chain is the complete sequence of connected stages that make up a journey from origin to destination, including planning, leaving the starting point, walking to transport, using public transport, navigating outdoor environments, entering buildings, and finding specific…

Urban Accessibility(also: City Accessibility, Built Environment Accessibility)

The degree to which urban environments, including streets, buildings, public spaces, and transportation systems, can be navigated and used by people with disabilities. Urban accessibility encompasses physical infrastructure such as curb cuts, tactile paving, and accessible…

Virtual Tour(also: 3D Virtual Tour, Digital Walkthrough)

A digital replica of a physical environment, typically captured using 360-degree cameras and depth sensors, that allows users to remotely explore and navigate through a space in a semi-immersive experience. In accessibility contexts, virtual tours offer people with mobility…

Walkability(also: Walkability Index, Pedestrian Accessibility)

A measure of how conducive an area is to walking, considering factors such as the presence, quality, and connectivity of sidewalks, pedestrian crossings, street lighting, and proximity to destinations. Traditional walkability indices like Walk Score focus on distance to…

Walkability Index(also: Walk Score, Walkability Score, Pedestrian Accessibility Index)

A numerical metric that quantifies how walkable a neighborhood or location is based on the proximity and density of destinations reachable on foot, such as grocery stores, schools, parks, restaurants, and transit stops. Services like walkscore.com have made walkability indices…

Wheelchair Accessibility(also: Wheelchair Access, Wheeled Mobility Access)

The degree to which physical environments, facilities, and services can be used by people who use wheelchairs. Wheelchair accessibility encompasses a wide range of factors including doorway widths, ramp availability and slope, floor surfaces, turning radius clearances, table and…

38 results.