Table 5 Combining evidence from literature of phase 1 with the clinical expertise of phase 2 and 3

1. Propulsion forward^{a, b, c, d}

10–50 m

Yes

Yes

x

x

x

x

Yes

Include

2. Propulsion backwards^a

5 m

Yes

x

x

Yes

Include

3. Rolls on soft surface^{a, c}

2 m (gravel, mat, grass)

Yes

Yes

x

Yes

Include mat, exclude gravel and grass

4. Turns 90° while moving forward^a

Left

Yes

Yes

x

x

Yes

Include

Right

5. Turns 90° while moving backward^a

Left

Yes

x

x

Yes

Include

Right

6. Turns 180° in place^a

Left

Yes

x

x

Yes

Include

Right

7. Parallel parking/maneuvers sideways^a

Left

No

No

-

Right

8. Avoids moving obstacle^a

Left

Adapted

x

Adapt into sudden stop

Include

Right

9. Opening/Closing a door^{a, c}

Open toward

Yes

Yes

Yes

Include

Open away

10. Figure-of-8-shape^c

Yes

x

x

Yes

Include

11. Holding a Wheelie^{a, c}

0–30 s

No

Yes

Yes

Include

12. Propelling in a Wheelie forward^c

3 m

No

No

-

13. Turns 180° in place in wheelie position^a

Left

No

No

-

Right

-

14. Slope ascent^{a, c, d}

3–20%

Yes

Yes

Yes

Include, adapt scoring

15. Slope descent^{a, d}

3–20%

Yes

Yes

Yes

Include, adapt scoring

16. Side Slope^{a, c}

Yes

Yes

Yes

Exclude, material too big

17. Platform ascending^{a, c, d}

2,5–15 cm

Yes

Yes^e

x

Yes

Include, adapt scoring

18. Platform descending^a

2.5–15 cm

Yes

Yes^e

x

Yes

Include, adapt scoring

19. Doorstep^{a, c}

1,2–4 cm

Yes

Yes^e

Yes

Include, adapt scoring

20. Gets over pothole^a

15 cm

No

No

-

21. Ascends stairs^a

No

Yes

No

-

22. Descends stairs^a

No

No

-

New item

sidewalk

No

-