Deer crash season: slow down at dawn and dusk, brake in a straight line, and don’t swerve

Insurance claims for hitting deer and other animals run more than twice the yearly average in November, according to the Highway Loss Data Institute. They rise fast in October and fall off in December and January. Daylight saving time ends on Sunday, November 1, 2026, which puts more evening commutes in the dark just as deer are moving. [S1] [S2] [S5] [S9]

Our take: slow down at dawn and dusk, use your high beams when no one is coming, and treat one deer as a sign of more. If one is in the road, honk and brake in a straight line. Don’t swerve. Every state agency here says not to, and Missouri warns it can put you off the road or into oncoming traffic. In IIHS’s 2004 study, most deaths in animal crashes came after the hit, when a car ran off the road or a rider fell. Everyone buckled, every trip. [S4] [S6] [S7] [S8]

The deer moment

Original diagram: four steps drawn from state agency advice for a deer encounter, the month pattern from HLDI insurance claims (not to scale, no values drawn) and where IIHS and state agencies say crashes cluster. [S1] [S4] [S5] [S6] [S7] [S8]

When and where deer get hit

Fall is mating season, and deer are on the move. HLDI’s claim data show the same pattern year after year. [S1] [S2]

November is the peak. HLDI’s 2006 to 2018 analysis found animal strike claims in November ran more than twice the yearly average. Claims rise quickly in October, peak in November, drop off in December and January, and are lowest in August. A 2013 to 2022 update found the same November peak. [S1] [S2]
Mid-October through November. Virginia’s transportation department says deer are especially active then and feed along roadsides as other fall food runs low. Colorado State Patrol puts peak season at October through December. [S5] [S8]
Dawn and dusk. Missouri and Montana both say deer are most active around dawn and dusk. Colorado says to watch from dusk to dawn. [S6] [S7] [S8]
Rural, fast roads. In IIHS’s 2004 study of fatal animal crashes, deer crashes happened most often in rural areas, on roads with speed limits of 55 mph or higher, and in darkness or at dusk or dawn. [S4]
Woods, water and signs. Virginia says to take extra care near forests, along streams and wherever deer crossing signs are posted, since those are known high-traffic spots for deer. [S5]

What the numbers show

Different sources count different things: insurance claims, police-reported crashes and deaths. [S1] [S3] [S5] [S6]

Deer and animal crash figures from the sources
Source	What it found
HLDI claims, 2013 to 2022	November claim rate more than twice the yearly average; fewest in August
Point of impact study, 2004 to 2017	Almost 9 in 10 animal strikes hit the front of the vehicle
IIHS, 2024 deaths	210 people died in crashes with animals, up from 89 in 1975
IIHS, 2004 study	Deer were the animal in 3 of every 4 fatal animal crashes reviewed
Virginia DMV, via VDOT	7,335 deer crashes and 690 injuries in a year, 42% of them in October and November
Missouri, 2024	2,952 deer crashes, four deaths and 420 injuries
Montana	13% of all reported crashes involve wildlife

The Virginia figures are for the year before VDOT’s 2024 release. [S1] [S2] [S3] [S4] [S5] [S6] [S7]

Clocks fall back on November 1

The date. Daylight saving time ends at 2 a.m. local time on Sunday, November 1, 2026, and clocks go back an hour. [S9]
What changes. NIST says the switch back to standard time moves an hour of daylight from the evening to the morning. The drive home gets darker overnight. [S9]
Why it matters for deer. VDOT says the shorter days put deer on the move during peak travel times, with more drivers on the road in the dark. [S5]
Same weekend, other chores. If you’re packing the trunk for winter anyway, our winter car kit guide covers what to keep in it.

Driving through deer country

Buckle up. IIHS’s 2004 study found 60 percent of the people killed inside vehicles in animal crashes weren’t wearing safety belts. Missouri and Montana both put the seat belt first. [S4] [S6] [S7]
Ride with a helmet. In the same study, 65 percent of the motorcyclists killed weren’t wearing helmets, and motorcycles were the striking vehicle in 37 percent of the crashes. [S4]
Slow down. Drive the speed limit, and slow down when you see animals nearby. Colorado says staying alert gives you time to adjust your speed or stop. Missouri adds: control your speed, stay alert and put the phone down. [S6] [S8]
High beams. Use them when there’s no oncoming traffic. Virginia, Montana and Colorado all recommend it, and Colorado says the light may make an animal move off. [S5] [S7] [S8]
Scan the edges. Check the shoulders and ditches, not just your lane. Deer often stand by the road and then step into it, and Missouri warns a calm deer on the shoulder can leap into traffic. [S5] [S6] [S7]
One means more. If a deer crosses in front of you, slow down and expect another to follow. [S5] [S6] [S8]
Leave room. Don’t follow too closely, since the driver ahead may have to stop suddenly for a deer. [S6]
Tires matter for stopping. Our tire tread guide walks through the penny test before the wet, dark months.

If a deer is in the road

Honk. Virginia says to slow down and hit your horn to scare the deer. Montana adds a flash of the headlights if it’s dark. [S5] [S7]
Brake in a straight line. With time and no one behind you, Colorado says to sound the horn and slow down in a straight line to a stop. Warn drivers behind you by honking and tapping your brakes. [S8]
Don’t swerve. Missouri says swerving can make you lose control and leave the road or cross into oncoming traffic. Colorado calls swerving out of your lane, or slamming on the brakes with traffic behind you, the worst choice you can make. [S6] [S8]
Expect the unexpected. Deer may stop in the middle of the road or double back. [S5] [S6]
If a hit can’t be avoided. Hold the wheel and keep following the road. Montana says to brake under control and let up on the brake just before impact, which raises the front of the car and lowers the chance the animal comes through the windshield. Colorado says to keep control, drive through, and pull over once it’s safe. [S7] [S8]

Quick decision

Pick what you see to get the sources’ advice in one place. Practice it here, not behind the wheel. [S5] [S6] [S7] [S8]

Where’s the deer?Anyone close behind you?Oncoming traffic?

Choose all three to see what to do.

After you hit a deer

Get off the road. Pull onto the shoulder and turn on your hazard lights. If you have to get out, watch for passing traffic. [S5] [S7]
Check everyone. Make sure you and your passengers are okay. [S8]
Leave the animal alone. Don’t search for the deer, approach it, touch it or try to move it. An injured deer can hurt you. [S5] [S7]
Call it in. Colorado says to call 911 if the animal is large and still in the road and to follow the dispatcher. Montana says to call the highway patrol. [S7] [S8]
Insurance. IIHS says repairs after hitting a deer or other animal are covered by comprehensive insurance. Check what your own policy includes. [S1] [S2]

Whistles, headlights and car tech

Deer whistles. In 2004, IIHS called vehicle-mounted deer whistles a method that’s been proven not to work. None of the newer sources here recommend them. [S4]
Headlights. IIHS says better headlights, including curve-adaptive ones, can help prevent deer strikes. [S2]
Automatic emergency braking. Some newer systems, especially ones built to prevent pedestrian crashes, may also prevent animal strikes. Some automakers say their systems detect animals, but IIHS hasn’t tested those claims. Drive as if the car won’t brake for you. [S1] [S2]
Litter. Virginia says trash odors can draw animals to the roadside. [S5]

Your situation

Pick the one that fits to highlight what the sources say.

Which fits?

Choose one to highlight its row below.

One crossed

Slow down and look for the next one. Deer rarely travel alone, and another is likely following. [S5] [S6] [S8]

Darker commute

Clocks fall back at 2 a.m. on November 1, moving an hour of daylight from evening to morning. Watch hardest at dawn and dusk, and use high beams when no one is coming. [S5] [S9]

Rural and fast

That’s where IIHS’s 2004 study found fatal deer crashes clustered. Slow down, scan the shoulders and ditches, and use high beams when the road is clear. [S4] [S7]

Standing in the road

Honk and slow down in a straight line. It may stop in the road or double back, so don’t try to steer around it. [S5] [S8]

On a motorcycle

In IIHS’s 2004 study, motorcycles were the striking vehicle in 37 percent of fatal animal crashes, and 65 percent of riders killed had no helmet. Wear one, and slow down at dawn and dusk. [S4]

Just hit one

Pull onto the shoulder, put the hazards on and check everyone. Don’t go looking for the deer. [S5] [S8]

Animal still there

Don’t approach, touch or move it. Colorado says to call 911 if a large animal is still in the road. [S7] [S8]

Deer whistle

IIHS said in 2004 that vehicle-mounted deer whistles had been proven not to work. Slowing down and scanning do more. [S4]

Car tech

It may help, but IIHS hasn’t tested automakers’ animal detection claims. Keep driving as if it won’t step in. [S1] [S2]

Where the sources differ

How hard to brake: Virginia says to brake gradually. Colorado says to slow down in a straight line to a stop when no one is behind you, but to keep your lane and drive through rather than slam the brakes with traffic close behind. Montana says to brake under control and let up just before impact. They all agree on one thing: don’t swerve. [S5] [S7] [S8]

Which months: insurance claims peak in November, and IIHS’s 2004 study found fatal deer crashes most likely in late fall. But IIHS’s 2024 death count for all animal crashes was highest in July through September. Claims, crashes and deaths are different measures, and the 2024 figure covers all animals, not just deer. [S1] [S3] [S4]

Getting out: Virginia says not to leave the car to look for the deer. Montana says to watch for passing traffic if you do need to get out. Colorado says to call 911 if a large animal is still in the road. [S5] [S7] [S8]

One agency’s extra tip: Colorado adds that when a hit can’t be avoided and traffic is behind you, a slight angle toward the animal’s rear is an option only if you’re by the white edge line. No other source here says this, so this guide sticks to holding your lane. [S8]

Quick answers

Should I swerve to miss a deer?

No. Missouri, Montana, Virginia and Colorado all say not to. Swerving can send you off the road or into oncoming traffic, and IIHS’s 2004 study found most deaths in animal crashes came after the hit, not from the animal itself. [S4] [S5] [S6] [S7] [S8]

Do high beams really help?

Three of the state agencies here recommend high beams when no one is coming, to see deer on the shoulder sooner. IIHS says better headlights can help prevent deer strikes. [S2] [S5] [S7] [S8]

Is it worse in November?

For insurance claims, yes: HLDI says November runs more than twice the yearly average. For deaths in all animal crashes, IIHS’s 2024 count was highest in July through September. [S1] [S3]

Do deer whistles work?

IIHS said in 2004 they’re a method proven not to work. None of the newer sources here suggest them. [S4]

Does insurance cover hitting a deer?

IIHS says animal strike repairs fall under comprehensive coverage. Check your own policy. [S1] [S2]

Are products ranked here?

No. This guide explains published IIHS, HLDI, NIST and state agency information. It doesn’t rank or endorse any vehicle, safety system, gadget or brand, and nothing was tested for it.

Sources

IIHS, NIST and state agency pages checked October 28, 2026. Recommendations here are our editorial reading of those pages; no hands-on results are claimed.