This part of ISO 7176 specifies a method for measuring the seating and wheel dimensions of wheelchairs.
It is applicable to wheelchairs and vehicles intended to provide indoor and outdoor mobility at speed
up to 15 km/h for people with disabilities whose mass does not exceed 120 kg, including the following
classifications from ISO 9999:1992:
Electric motor-driven wheelchairs with manual steering 12 21 24
Electric motor-driven wheelchairs with power steering 12 21 27
Powered attendant-controlled wheelchairs 12 21 21
Manual attendant-controlled wheelchairs 12 21 03
Bimanual rear-wheel-driven wheelchairs 12 21 06
Bimanual front-wheel-driven wheelchairs 12 21 09
Bimanual lever-driven wheelchairs 12 21 12
Single-side-driven nonpowered wheelchairs driven by one arm or one leg 12 21 15
Foot-propelled wheelchairs 12 21 18
It does not apply to wheelchairs with a seat width of less than 212 mm.
This part of ISO 7176 does not specify nominal seating and wheel dimensions for wheelchairs.
NOTE For wheelchairs not covered by the scope, this part of ISO 7176 may still give an indication of where
measurements should be made. Observe that for wheelchairs designed for users whose mass is significantly
greater than the reference loader gauge (see Annex A) and which have compressible parts such as sprung wheels
and/or seats, this measurement procedure may not give the correct seat measurements, as the compressible
parts will not be fully compressed.