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Daylight Saving Time Risks: Increased Fatal Crashes, According to Studies

Daylight Saving Time & Road Safety: Protecting Drivers & Pedestrians | MotorVero

Daylight Saving Time and Road Safety: Protecting Drivers and Pedestrians

daylight saving time

The Hidden Dangers of Daylight Saving Time

Every year, as we spring forward for daylight saving time (DST), millions of drivers and pedestrians unknowingly enter a period of increased risk on the road. The loss of just one hour of sleep may seem minor, but research shows that it significantly affects alertness, reaction times, and overall road safety.

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The phrase "beware the Ides of March" warns of unforeseen dangers, and for modern drivers, the greatest threat this season may not be betrayal, but drowsiness behind the wheel. According to traffic safety studies, the days following the time change see a spike in accidents, injuries, and fatalities.

Traffic Accidents Spike After Daylight Saving Time

A 20-year study published in Current Biology found a 6% increase in fatal accidents in the U.S. immediately after DST begins. The study, which analyzed more than 732,000 crashes, showed that this spike is most pronounced in the early morning hours, when darkness and driver drowsiness are at their peak.

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While accident rates generally return to normal within a week, this short period of increased risk is responsible for many preventable injuries and deaths.

Why Does Daylight Saving Time Cause More Crashes?

Experts attribute this phenomenon to two main factors:

  • Sleep Deprivation: Losing an hour of sleep disrupts circadian rhythms, leading to decreased concentration and slower reaction times.
  • Darker Mornings: The time shift means more commuters travel in darkness, reducing visibility and increasing the likelihood of accidents.
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The Dangers of Drowsy Driving

A study by the AAA Foundation for Traffic Safety found that drowsy driving plays a much larger role in fatal crashes than official statistics suggest. Between 16% and 21% of all deadly accidents involve a fatigued driver.

Unlike other driving impairments, such as alcohol intoxication, drowsy drivers often fail to brake or swerve to avoid a collision, making these crashes especially severe. Despite widespread awareness of the dangers, many drivers admit to struggling to stay awake while driving.

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How to Drive Safely After the Time Change

To minimize risks associated with DST, experts recommend the following precautions:

  • Get enough sleep: Aim for at least 7-8 hours of rest before driving.
  • Allow extra time: Give yourself additional time for your morning commute.
  • Avoid distractions: Refrain from eating, drinking, or using your phone while driving.
  • Be extra alert: Recognize that others on the road may also be drowsy.
  • Take breaks: On long trips, stop every 100 miles or two hours to rest.
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Recognizing Signs of Drowsy Driving

If you experience any of the following symptoms while driving, pull over and rest immediately:

  • Difficulty keeping your eyes open
  • Frequent yawning
  • Drifting out of your lane
  • Not remembering the last few miles driven
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Pedestrian Safety: A Growing Concern

While overall traffic fatalities have stabilized, pedestrian deaths continue to rise. A 2022 report from the National Highway Traffic Safety Administration (NHTSA) found that pedestrian and cyclist deaths increased by 2% and 8%, respectively.

The sudden shift to darker mornings means that pedestrians—especially children at bus stops—are at greater risk.

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How Pedestrians Can Stay Safe

AAA recommends the following safety measures:

  • Wear bright or reflective clothing when walking in the dark.
  • Carry a flashlight for visibility.
  • Make eye contact with drivers before crossing streets.
  • Use sidewalks whenever possible; if unavailable, walk facing traffic.
  • Always cross at intersections rather than mid-block.
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Do Driver-Assist Systems Reduce DST-Related Accidents?

While modern vehicles include advanced driver-assistance systems (ADAS) like adaptive cruise control and lane-keeping assist, these technologies have limitations. Many safety features, including pedestrian detection systems, perform poorly in low-light conditions.

Some manufacturers, including Ford, GM, and Subaru, offer camera-based driver monitoring systems that detect drowsiness. However, these should serve as backup alerts—not substitutes for driver attentiveness.

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Final Thoughts: Staying Safe During Daylight Saving Time

Daylight saving time brings longer evenings, but it also increases risks for drivers and pedestrians. Understanding the dangers of sleep deprivation and taking proactive safety measures can significantly reduce accidents during this transition period.

By staying alert, allowing extra travel time, and following expert safety tips, we can minimize the hazards of the time change and keep our roads safer for everyone.

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Motorvero Richy

Last Updated On Feb, 27-2025

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