Table 2 PSS test matrix.

From: Occupant safety effectiveness of proactive safety seat in autonomous emergency braking

Test condition

Seat Pan movement

Seatback angle

Trial counts (volunteers × repeat)

Muscle condition

PSS OFF

PSS-Off15

Rear

15°

15 (5 × 3)

Relaxed

PSS-Off27

27°

15 (5 × 3)

PSS ON (Rear to Mid)

PSS-On15R

Rear → Mid

15° → 5°

30 (10 × 3)

PSS-On27R

27° → 17°

30 (10 × 3)

PSS ON (Fore to Mid)

PSS-On15F

Fore → Mid

15° → 5°

15 (5 × 3)

PSS-On27F

27° → 17°

15 (5 × 3)