While the seat belt vastly improved a passenger's safety, it remained far from perfect, and nasty head, spinal, and other injuries continued to occur. Nils Bohlin, inventor of the three-point belt ...
It was a simple lap belt that kept passengers in their seats ... The most major innovation was the three-point seatbelt in 1959. Nils Bohlin developed the three-point lap and shoulder seatbelt.