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64 Md. L. Rev. 573 (2005)
Liability Insurance and Accident Prevention: The Evolution of an Idea

handle is hein.journals/mllr64 and id is 583 raw text is: 


    LABILITY INSURANCE AND ACCIDENT PREVENTION:
                 THE EVOLUTION OF AN IDEA

                       KENNETH S. ABRAHAM*

     The tort system has an ambivalent attitude toward liability insur-
ance. On the one hand, an insured defendant is more likely to be
able to satisfy the full amount of a judgment against it than an unin-
sured defendant. Liability insurance is therefore favored, because it
facilitates the compensation of successful plaintiffs. On the other
hand, liability insurance may generate moral hazard, since other
things being equal, insured parties are likely to be less concerned
about the threat of liability than uninsured parties. Liability insurance
may thereby undermine accident prevention. For more than a century
now this ambivalence has manifested itself in a variety of ways, in both
judicial decisions and in debates about tort reform.
     This Article is about the way in which ideas about the relation
between liability insurance and accident prevention have evolved
from the middle of the nineteenth century to the present. These
ideas are part of a larger story about the symbiotic relationship be-
tween tort liability and insurance during this entire period. Much
more is involved in this story than liability insurance and accident pre-
vention alone. Other forms of insurance, and other goals, also figure
prominently. And the story involves more than ideas. The way in
which tort liability and various forms of insurance have influenced
each other in practice is at least as significant as the way that ideas
about this relationship have evolved. Nonetheless, ideas have conse-
quences, and ideas about this relationship-including Guido Cala-
bresi's important ideas about it-have affected the development of
the law for nearly two centuries now.
     This Article is being presented during a portion of the Confer-
 ence1 devoted to Calabresi's impact on the law and scholarship of
 mass torts. Although the influence of ideas about the relation be-


    * Robert E. Scott Distinguished Professor of Law and Class of 1966 Research Profes-
 sor, University of Virginia School of Law. I am grateful to my colleagues Vincent Blasi and
 G. Edward White for their comments on an earlier version of this Article. Portions of the
 Article are part of a book I am writing about the influence of tort liability on the develop-
 ment of insurance, and the influence of insurance on the development of tort liability,
 over the last 150 years.
    1. Calabresi's The Costs ofAccidents. A Generation of Impact on Law and Scholarship,
 University of Maryland School of Law (April 23-24, 2004).

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