The Short and Long Run Effects of Daylight Saving Time on Fatal Automobile Crashes

Sood, Neeraj; Ghosh, Arkadipta

doi:10.2202/1935-1682.1618

Cited by 23 publications

(29 citation statements)

References 28 publications

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“…Notably, many previous studies have found a net reduction in crashes due to the ambient light mechanism (Ferguson et al 1995;Broughton, Hazelton, and Stone 1999;Coate and Markowitz 2004;and Sood and Ghosh 2007), something I do not find evidence of during the 2002-2011 sample period. Further, existing studies reach contradictory conclusions about whether sleep deprivation increases crash risk-something I find strong evidence of.…”

Section: Evidence From Earlier Yearscontrasting

confidence: 69%

“…39 Coren (1996) and Varughese and Allen (2001) find an increase in crashes on the Monday following the spring transition into DST, while Vincent (1998), Sood and Ghosh (2007), and Lahti et al (2010) suggest no effect. 40 To remain consistent with Sood and Ghosh (2007), I omit the first year of FARS data (1975) because it was subject to alternative DST cutoffs following the 1973 oil crisis.…”

mentioning

confidence: 99%

“…The first paper that seeks to unite this literature is Sood and Ghosh (2007), who made use of a natural experiment arising from a 1987 spring extension to DST. Using US data from 1976-2003 and a difference-in-differences (DD) framework, they found that crashes fell by 6-11 percent during the first nine weeks of DST.…”

mentioning

confidence: 99%

“…Hence, this estimated reduction in crashes during a time period that was DST in all years suggests that at least part of their estimated effect could be due to a changing of the seasonal crash profile across time. Sood and Ghosh (2007) recognize this issue, stating "One limitation of our approach is that it assumes that no change occurred in seasonal trends or week of the month effects across treatment and control years. "…”

mentioning

confidence: 99%

“…40 To remain consistent with Sood and Ghosh (2007), I omit the first year of FARS data (1975) because it was subject to alternative DST cutoffs following the 1973 oil crisis. 41 Gasoline prices are unavailable before 1990.…”

mentioning

confidence: 99%

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Spring Forward at Your Own Risk: Daylight Saving Time and Fatal Vehicle Crashes

Smith

2016

American Economic Journal: Applied Economics

129

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. Despite mounting evidence that DST fails in its primary goal, some form of Daylight Saving Time is still practiced by over 1.5 billion people globally. In this paper I demonstrate that DST imposes high social costs on Americans, specifically, an increase in fatal automobile crashes. Employing four tests to differentiate between an ambient light or sleep mechanism, I show that this result is most likely due to sleep deprivation caused by the spring transition and the result implies additional costs of DST in terms of lost productivity nationwide.The procedure for DST is well characterized by the phrase "spring-forward, fall-back." Each year on the spring transition date, clocks are moved forward by one hour, from 2 am to 3 am. The process is then reversed for the fall transition with clocks "falling back" from 2 am to 1 am. This alters the relationship between clock time and solar time by an hour, moving sunlight from the morning to the evening (see Figure 1). Although the general concept of DST was first suggested by Benjamin Franklin in a satirical essay in 1784 (Aldridge 1956), it was over a

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Section: Evidence From Earlier Yearscontrasting

confidence: 69%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Spring Forward at Your Own Risk: Daylight Saving Time and Fatal Vehicle Crashes

Smith

2016

American Economic Journal: Applied Economics

129

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Saving light, losing lives: How daylight saving time impacts deaths from suicide and substance abuse

Osborne-Christenson

2022

Health Economics

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For the first time since 1915-1917, life expectancy in the United States fell for three consecutive years between 2015 and 2017. This was largely due to a dramatic rise in suicides and deaths from drug or alcohol overdose and abuse. In 2017 alone, more than 150,000 American died from one of these so-called "deaths of despair" (DoD), representing a six percent increase from 2016 and a more than 100% increase since 1999 (see Figure 1). All told, accidental deaths including those related to drug and alcohol overdose are now the third leading cause of death in the United States while suicide is ranked 10th. 1 This epidemic was first considered by Case and Deaton (2015, 2017. The authors, who coined the phrase "deaths of despair", specifically focus on working age, less educated, non-Hispanic white men, whom Case and Deaton show have been most impacted by DoD since the early 1990's. 2 The authors point to an increase in globalization, healthcare costs, and automation as the underlying drivers of DoD. They argue that these caused decreasing real wages and a decline in attachment to the labor market, both of which contribute to feelings of hopelessness.The initial works by Deaton (2015, 2017) have spawned a robust literature. For example, Dow et al. ( 2020) leverages state-level variation in minimum wage policies to show that a 10% increase in minimum wage reduces suicide by 2.7% but does not change substance related deaths. Monnat (2020) shows that living outside a metro area makes a person more vulnerable to these deaths, and that mortality rate growth for women is particularly concerning. Tilstra et al. (2021) shows that

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Circadian Rhythms, Sleep, and Cognitive Skills: Evidence From an Unsleeping Giant

2017

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The Short and Long Run Effects of Daylight Saving Time on Fatal Automobile Crashes

Cited by 23 publications

References 28 publications

Spring Forward at Your Own Risk: Daylight Saving Time and Fatal Vehicle Crashes

Spring Forward at Your Own Risk: Daylight Saving Time and Fatal Vehicle Crashes

Saving light, losing lives: How daylight saving time impacts deaths from suicide and substance abuse

Circadian Rhythms, Sleep, and Cognitive Skills: Evidence From an Unsleeping Giant

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