Driving & Vehicle Ergonomics Presented by: Ginger Edgecombe Dorsey, Ph. D. Aphis ergonomics Program Manager

Seatpan Depth

• Check your seatpan/cushion length.
• When seated, scoot your tail bone as far back to the seat back as possible.
• Should be able to place 2-4 fingers between back of knee and front of seat.
• If cannot perform, add a pillow or back cushion to car seat to move you forward.

Seatpan Tilt

• Adjust your seatpan tilt.
• When seated, scoot your tail bone as far back to the seat back as possible.
• Tilt the seatpan tilt until your thighs are supported along the full length of the cushion without there being pressure at the back of your knees.
• The seat of your car should allow for your knees to be slightly lower than your hips:
• Opens up your hip flexors.
• Increases circulation to the back.
• Decreases pressure on lower back.