On Sunday, November 1, 2026, millions of people across North America will perform a familiar ritual. They will wind their clocks back one hour, marking the official end of Daylight Saving Time. But when Monday morning arrives, the real-world consequences of this temporal shift will play out on the asphalt.

The morning commute will look entirely different. Suddenly, the sun rises an hour earlier. While this sounds like a welcome relief for those tired of driving to work in pitch-black conditions, safety experts warn that the sudden change in daylight distribution actually makes the roads more treacherous.

The Illusion of the Extra Hour

Many people look forward to gaining an extra hour of sleep over the weekend. Sleep scientists, however, say this benefit is short-lived. Our bodies do not adapt to a new schedule overnight.

The internal circadian clock takes about a week to fully adjust to even a one-hour shift. Even if you stay in bed longer on Sunday, your body’s natural waking cycle remains out of sync by Monday morning. This leads to subtle cognitive delays, slower reaction times, and brief episodes of micro-sleep while driving. This physical fatigue collides directly with a brand-new environmental challenge on the highway: blinding morning light.

Blinding Glare and the Low Sun

For weeks leading up to November, drivers headed east during the morning rush hour have done so in the dark. On Monday, November 2, they will drive directly into a rising sun.

Because the sun sits lower on the horizon during early November, the glare can be intense. This is not just an annoyance. It is a major safety hazard. When the sun is this low, standard car visors are often useless. Dirty windshields exacerbate the problem, scattering the light and creating a blinding white haze across a driver’s field of vision.

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Traffic safety studies show a distinct spike in rear-end collisions and lane-departure accidents during the first week of Standard Time. Drivers simply cannot see the brake lights of the cars ahead of them quickly enough. Pedestrians crossing the street at intersections are also much harder to spot when a driver is squinting directly into the sun.

The Sudden Evening Blackout

While the morning commute gets a temporary infusion of sunlight, the evening return trip pays a heavy price. The sun will set an hour earlier, plunging the evening rush hour into darkness.

This sudden transition is statistically the most dangerous part of the time change. According to data from the Insurance Institute for Highway Safety, pedestrian crash rates climb significantly in the weeks following the autumn shift. In fact, some studies show a 16% increase in pedestrian fatalities during the first month of Standard Time.

People are used to walking home from transit stations or walking their dogs in the twilight. Suddenly, it is pitch black at 5:30 PM. Pedestrians still behave as if they are visible, but drivers, who are already tired from a long workday and adjusting to the time shift, simply do not see them until it is too late.

Navigating the Shift Safely

How do you survive the shift? Simple adjustments can make a profound difference. Doing a few basic things can keep you and others safe on the road.

• Clean your windshield inside and out. Dust and film on the interior glass scatter low-angle sunlight, making glare exponentially worse.
• Keep a pair of polarized sunglasses in your vehicle. They are highly effective at cutting through morning glare and reducing eye strain.
• Slow down. If you are blinded by the sun or struggling to see in the newly dark evening hours, reduce your speed and increase your following distance.
• Turn on your headlights. Even if you can see perfectly fine in the early morning light, keeping your headlights on helps other drivers see you, especially when they are struggling with glare.

The shift to Standard Time is an annual hurdle, but awareness is the best tool for staying safe. By anticipating the glare and expecting the unexpected in the dark afternoon hours, commuters can navigate the seasonal change without incident.