This part of GB/T 18029 specifies the test methods for wheelchair (manual and electric) dimensions (used state and folded state), mass and minimum turning space.
2021GB/Z 18029.5-2021 Wheelchairs—Part 5:Determination of dimensions,mass and manoeuvring space
2008GB/T 18029.5-2008 Wheelchairs.Part 5:Determination of overall dimension,mass and turning space
GB/T 18029.5-2008 Wheelchairs.Part 5:Determination of overall dimension,mass and turning space was changed to GB/Z 18029.5-2021 Wheelchairs—Part 5:Determination of dimensions,mass and manoeuvring space.