This study estimates the effects of a broad range of alternative no-fa
ult auto insurance plans, compared with the traditional tort system. A
simulation model relating accident victims' injuries and losses to th
eir expected auto insurance compensation under a specified no-fault pl
an is applied to a representative sample of auto accident victims in t
he tort states. Their estimated compensation under each of several no-
fault alternatives is then compared to their actual compensation. The
results indicate that no-fault can yield substantial savings over the
traditional system, or may increase costs substantially, depending on
the no-fault plan's provisions. Regardless of plan provisions, all no-
fault plans reduce transaction costs, match compensation more closely
with economic loss, reduce the amounts paid in compensation for noneco
nomic loss to less seriously injured people, and speed up compensation
.