Rut means more deer on the highway, and now truckers have help avoiding them

John Hayes, Pittsburgh Post-Gazette on

Published in Outdoors

Since the clocks moved back an hour last weekend, motorists are spending more hours driving in the dark. Beyond the headlights, white-tailed deer are frantic, oblivious to everything but the hormonal instinct to mate.

In 2020-21, the national animal-vehicle collision rate increased, but technology is helping to reduce the number of deer killed by commercial truckers.

New data from State Farm Insurance shows the average U.S. driver has a 1 in 109 chance of colliding with an animal, and 70% of reported animal collisions involve deer. The most recent State Farm analysis estimates nearly 1.9 million insurance claims for animal collisions were filed nationwide from July 1, 2020, to June 30, 2021 — almost 200,000 more claims than in the previous 12-month period.

West Virginia drivers have the worst odds of hitting a deer: 1 in 37, according to State Farm. Pennsylvania was third on the list but dropped to a tie for fourth with Michigan in 2020-21, with the chance of crashing into a deer at 1 in 54.

Insurance researchers have calculated that each deer-vehicle collision costs Americans more than $8,000, including vehicle damage, insurance claims, medical bills, funeral costs, removal of carcasses and loss of the recreational value of the deer. Near misses are not recorded.

There are likely fewer near misses by trucks. Lytx, a tech firm that provides safety and routing options for companies operating big rigs, smaller trucks, buses, vans and other commercial and public sector vehicles, keeps track of animal activity and other hazards for thousands of commercial fleets and more than 1.4 million drivers worldwide.


The San Diego-based company combines and analyzes algorithms from machine vision and artificial intelligence technologies to advise drivers in real time about road hazards including seasonal, lunar and weather-related increases in animal crossing activity. The cab-mounted Lytx units record the vehicle's location and speed as well as sudden braking and swerving. Its database adds more than 200,000 new driving events each day, and its collision reports are included in the annual State Farm deer-vehicle collision advisories.

In 2014, Lytx commissioned a study by the Virginia Tech Transportation Institute that evaluated the potential benefits of equipping all heavy trucks and buses in the United States with the Lytx system or similar safety products. The research found that the systems could prevent an average of 727 fatal truck and bus crashes (20.5% of the total in the study period) and save 801 lives (20% of total fatalities). Use of the equipment could reduce an average of 25,007 injuries in truck and bus crashes (35.2% of the total) and save 39,066 injuries (35.5% of total injuries) each year, according to the study.

A 35,000-pound 18-wheeler hauling 45,000 pounds of cargo traveling at the truck speed limit at night is not as nimble as a car. Swerving would be more dangerous than hitting the animal, and the driver may not be able to stop within the space brightened by the headlights, said Kyle Warlick, a client intelligence analyst with Lytx.

Because of the bulk of their vehicles, drivers of commercial rigs are less likely to be killed or injured in animal collisions, Mr. Warlick said. "[Drivers] might not even know they were in a collision until they arrive at their destination."


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