Volvo VNL 780 Operator's Manual page 207

INSTRUMENTS AND CONTROLS 197
VNL 730 Sleeper Bunk
DANGER
Always have three limbs (one foot and
two hands or two feet and one hand) in
contact with the floor, bunk or step at all
times when entering or exiting the upper
bunk. Failure to follow this procedure can
lead to a fall and cause severe personal
injury or death.