Per-Mile Premiums for Auto Insurance
AbstractAmericans drive 2,360,000,000,000 miles each year, far outstripping other nations. Every time a driver takes to the road, and with each mile she drives, she exposes herself and others to the risk of accident. Insurance premiums are only weakly linked to mileage, however and have largely lump-sum characteristics. The result is too much driving and too many accidents. This paper begins by developing a model of the relationship between driving and accidents that formalizes Vickrey's  central insights about the accident externalities of driving. We use this model to estimate the driving, accident, and congestion reductions that could be expected from switching to other insurance pricing systems. Under a competitive system of per-mile premiums, in which insurance companies quote risk-classified per-mile rates, we estimate that the reduction in insured accident costs net of lost driving benefits would be $9.8 - $12.7 billion nationally, or $58 - $75 per insured vehicle. When uninsured accident cost savings and congestion reductions are considered, the net benefits rise to $25 - $29 billion, exclusive of monitoring costs. The total benefits of a uniform per- gallon insurance charge could be $1.3 - $2.3 billion less due to heterogeneity in fuel efficiency. The total benefit of "optimal" per- mile premiums in which premiums are taxed to account for accident externalities would be $32 - $43 billion, or $187 -$254 per vehicle, exclusive of monitoring costs. One reason that insurance companies may not have switched to per-mile premiums on their own is that most of the benefits are external and the transaction costs to the company and its customers of checking odometers could exceed the $31 per vehicle of gains that a single company could temporarily realize on its existing base of customers.
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Bibliographic InfoPaper provided by EconWPA in its series Law and Economics with number 9902002.
Length: 63 pages
Date of creation: 12 Feb 1999
Date of revision:
Note: Type of Document - Acrobat.pdf; prepared on IBM PC ; pages: 63; figures: separate document
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Web page: http://126.96.36.199
externalities; accidents; auto insurance; tort law;
Other versions of this item:
- Aaron S. Edlin, 2003. "Per-Mile Premiums for Auto Insurance," Law and Economics 0303001, EconWPA.
- Aaron S. Edlin., 1999. "Per-Mile Premiums for Auto Insurance," Economics Working Papers 99-262, University of California at Berkeley.
- Aaron S. Edlin, 1999. "Per-Mile Premiums for Auto Insurance," NBER Working Papers 6934, National Bureau of Economic Research, Inc.
- K13 - Law and Economics - - Basic Areas of Law - - - Tort Law and Product Liability
- H23 - Public Economics - - Taxation, Subsidies, and Revenue - - - Externalities; Redistributive Effects; Environmental Taxes and Subsidies
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Blog mentionsAs found by EconAcademics.org, the blog aggregator for Economics research:
- Are Economists Good at Business?
by Matthew E. Kahn in Environmental and Urban Economics on 2010-07-08 02:05:00
- Cohen, Alma & Dehejia, Rajeev, 2004.
"The Effect of Automobile Insurance and Accident Liability Laws on Traffic Fatalities,"
Journal of Law and Economics,
University of Chicago Press, vol. 47(2), pages 357-93, October.
- Alma Cohen & Rajeev Dehejia, 2003. "The Effect of Automobile Insurance and Accident Liability Laws in Traffic Fatalities," NBER Working Papers 9602, National Bureau of Economic Research, Inc.
- Santos, Georgina & Behrendt, Hannah & Maconi, Laura & Shirvani, Tara & Teytelboym, Alexander, 2010. "Part I: Externalities and economic policies in road transport," Research in Transportation Economics, Elsevier, vol. 28(1), pages 2-45.
- Kleit, Andrew N., 2002. "Impacts of Long-Range Increases in the Corporate Average Fuel Economy (CAFE) Standard," Working paper 289, Regulation2point0.
- Parry, Ian, 2003.
"Comparing Alternative Policies to Reduce Traffic Accidents,"
dp-03-07, Resources For the Future.
- Parry, Ian W. H., 2004. "Comparing alternative policies to reduce traffic accidents," Journal of Urban Economics, Elsevier, vol. 56(2), pages 346-368, September.
- Ian W. H. Parry, 2005.
"Is Pay-as-You-Drive Insurance a Better Way to Reduce Gasoline than Gasoline Taxes?,"
American Economic Review,
American Economic Association, vol. 95(2), pages 288-293, May.
- Parry, Ian, 2005. "Is Pay-As-You-Drive Insurance a Better Way to Reduce Gasoline than Gasoline Taxes?," Discussion Papers dp-05-15, Resources For the Future.
- Shanjun Li, 2012.
"Traffic safety and vehicle choice: quantifying the effects of the ‘arms race’ on American roads,"
Journal of Applied Econometrics,
John Wiley & Sons, Ltd., vol. 27(1), pages 34-62, 01.
- Li, Shanjun, 2009. "Traffic Safety and Vehicle Choice: Quantifying the Effects of the "Arms Race" on American Roads," Discussion Papers dp-09-33, Resources For the Future.
- Gerard, David & Lave, Lester B., 2003. "The Economics of CAFE Reconsidered: A Response to CAFE Critics and A Case for Fuel Economy Standards," Working paper 139, Regulation2point0.
- Alma Cohen & Peter Siegelman, 2009.
"Testing for Adverse Selection in Insurance Markets,"
NBER Working Papers
15586, National Bureau of Economic Research, Inc.
- Alma Cohen & Peter Siegelman, 2010. "Testing for Adverse Selection in Insurance Markets," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 77(1), pages 39-84.
- Elizabeth Kopits & Maureen Cropper, 2008.
"Why Have Traffic Fatalities Declined in Industrialised Countries?: Implications for Pedestrians and Vehicle Occupants,"
Journal of Transport Economics and Policy,
London School of Economics and University of Bath, vol. 42(1), pages 129-154, January.
- Kopits, Elizabeth & Cropper, Maureen, 2005. "Why have traffic fatalities declined in industrialized countries ? Implications for pedestrians and vehicle occupants," Policy Research Working Paper Series 3678, The World Bank.
- Cropper, Maureen L. & Kopits, Elizabeth, 2005. "Why Have Traffic Fatalities Declined in Industrialized Countries' Implications for Pedestrians and Vehicle Occupants," Working paper 354, Regulation2point0.
- Laszlo Goerke, 2003. "Road Traffic and Efficient Fines," European Journal of Law and Economics, Springer, vol. 15(1), pages 65-84, January.
- Lutter, Randall, 1999. "Is EPA's Ozone Standard Feasible?," Working paper 412, Regulation2point0.
- Delucchi, Mark A. & McCubbin, Donald R., 2010. "External Costs of Transport in the U.S," Institute of Transportation Studies, Working Paper Series qt13n8v8gq, Institute of Transportation Studies, UC Davis.
- Daniel P. Kessler & Daniel L. Rubinfeld, 2004. "Empirical Study of the Civil Justice System," NBER Working Papers 10825, National Bureau of Economic Research, Inc.
- Kravitz, Troy & Lutter, Randall, 2003. "Do Regulations Requiring Light Trucks To Be More Fuel Efficient Make Economic Sense? An Evaluation of NHTSA's Proposed Standards," Working paper 223, Regulation2point0.
- Steimetz, Seiji S.C., 2008. "Defensive driving and the external costs of accidents and travel delays," Transportation Research Part B: Methodological, Elsevier, vol. 42(9), pages 703-724, November.
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