Volvo VNL 780 Operator's Manual page 271

OPERATION 261
A child restraint system should also be provided for each child weighing 25 kg (50 lb.) or
less. It should meet the requirements of FMVSS 213, "Child Restraint System." Carefully
read and follow all manufacturer's instructions on installation and use. Be certain the child
remains in the restraint system at all times while the vehicle is in motion.
W8002741
Safety belts must be worn by the driver and all passengers at all times. Before adjusting
or fastening the safety belt, move the seat forward or backward and adjust the seat height
as necessary. Sit erect and adjust the seat cushion and seat back for a comfortable driving
position. In the event of a collision, a correct driving position maximizes the effectiveness of
the safety belt.
There are both Federal and State laws governing the use of safety belts. As laws differ from
state to state, make yourself familiar with the current rules.
Tether straps are installed on all suspension-type seats. Tether straps help secure the seat
to the floor and are intended to restrain the seat and safety belt in case of an accident
or sudden stop.
The tethers are not adjustable and do not need any adjustment.