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Are there really more vehicle crashes around daylight saving time changes?

Posted by Frank Piscitelli | Oct 31, 2017 | 0 Comments

Daylight savings time has become a fact of life over the decades, but does it continue to throw off our sleep schedule?

There are a lot of things to dislike about daylight saving time: the disruption in our sleep schedule, the onslaught of seasonal puns in retail advertisements, the fact that it doesn't work as well at saving energy as we've always been told, and thus, it really serves no purpose.

But have you ever thought about the possibility that daylight saving time might actually be dangerous? When the clocks spring forward and fall back each year, it's only by an hour, but research suggests it may take days to adjust to the time difference. And during that adjustment period, there is a spike in car crashes, especially after we “spring forward” and lose an hour of sleep. Some police departments say that there's about a 10 percent increase in crashes just after the time change [source: Boynton] and there's even evidence that figure might be much higher.

Researchers at the University of Colorado at Boulder studied the daylight saving time period (from March to November) for 10 years and discovered there was a 17 percent increase in traffic incident-related deaths the Monday after the spring time change. Traffic fatalities all that week were also higher than average. Some of the effects can be attributed to lower visibility (the fact that it's earlier, and therefore darker, than drivers are accustomed to), but most of the accidents, experts say, are because people are struggling to stay awake behind the wheel.

The traffic statistics alone seem like pretty conclusive evidence that daylight saving time is more than a mere inconvenience. And researchers say that the grogginess we feel for the first couple of days after we change the clocks might just be scratching the surface of how our bodies actually process the disruption. People who only sleep four or five hours a night under normal circumstances are at a much higher risk of causing a car crash than people who sleep six or seven hours a night, and people who get eight hours of sleep or more are least likely to cause a crash. But when sleep cycles get disrupted, everyone gets messed up.

Although most research tends to focus on the “spring forward” period, when we lose an hour of sleep, experts say that the “fall back” period also has negative and dangerous effects, despite the extra hour gained, because the sleep cycle is still significantly altered. As long as daylight saving time remains the national standard, there's not much that can be done about these effects. Experts suggest being proactive: go to bed a little earlier during the adjustment period, look out for signs of drowsiness while driving and pull over to rest, if necessary.

About the Author

Frank Piscitelli

As a first-generation Italian in the United States, Frank is no stranger to tough times. His father's family moved to Cleveland from Italy on May 22, 1958, with a few articles of clothing, some personal items and very little money. His family shared a home with three other related families but happily worked long hours doing jobs that involved physical labor, just to put food on the table. There was the promise of hope and opportunity, which was missing before his family moved here.

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Attorney Frank Piscitelli has nearly 30 years experience representing individuals and families against large corporations and insurance companies. His practice is limited to wrongful death and very serious injury cases.

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