ISO 7176-26:2007

Overview

ISO 7176-26:2007 - Wheelchairs - Part 26: Vocabulary specifies a standardized vocabulary of terms and definitions used for manual and electrically powered wheelchairs (including scooters) and associated seating systems. Its purpose is to eliminate confusion from duplicated or inconsistent terminology across wheelchair design, testing and documentation, and to provide preferred terms used across the ISO 7176, ISO 10542 and ISO 16840 series.

The standard:

• Defines terms used in multiple wheelchair-related ISO standards
• Excludes everyday English terms deemed already clear
• Includes deprecated terms with references to preferred terminology
• Provides Annex A containing a standard set of descriptors for characterizing wheelchairs

Key Topics

ISO 7176-26 organizes the vocabulary by function and follows ISO 10241 structure. Major content areas (Clause 4) include:

• Wheelchairs and related mobility devices (manual, powered, scooters, stair‑climbing devices, shower/toilet chairs, stand‑up models)
• Wheelchair operators (occupant, assistant, operator)
• Overall dimensions (length, width, height, turning diameter, stowage dimensions, ground clearance)
• Drive systems and steering (powerbase, tiller, direct steering, balancing wheelchairs)
• Wheels and wheel features
• Postural supports and seating systems (postural support device terminology and characteristics)
• Seating dimensions, testing equipment, transportation in motor vehicles
• Product information and abbreviations (e.g., ATD, PSD, RLG, UDIG, WTORS)

The vocabulary clarifies measurement references (for example, overall dimensions measurement methods are specified in ISO 7176-5) and provides US English equivalents while emphasizing that only the official ISO language terms are normative.

Practical Applications

ISO 7176-26 is a foundational reference for:

• Manufacturers and product designers ensuring consistent product specs and manuals
• Test laboratories and certification bodies applying other ISO wheelchair test methods
• Clinicians, therapists and procurement specialists selecting and specifying wheelchairs and seating
• Regulatory agencies, standards committees and translators aiming for consistent terminology
• Technical writers creating user manuals, labelling, and educational materials (reproduction of definitions for educational use is permitted under ISO conditions)

Using a common vocabulary reduces specification errors (e.g., confusion between “tilt” and “recline”), improves interoperability of test results, and supports clear regulatory and clinical communication.

Related Standards

• ISO 7176 series (multiple parts: stability, brakes, dimensions, strength, EMC, etc.)
• ISO 10542, ISO 16840 (related seating and test standards)
• ISO 9999 (classification of assistive products)
• ISO 7176-5 referenced for measurement methods

Keywords: ISO 7176-26:2007, wheelchair vocabulary, wheelchair terminology, wheelchair standards, seating systems, manual and electric wheelchairs, ISO 7176.