Utah Highway Patrol officials say Anthony S. Jackson was killed in the crash about 1:30 p.m. Monday on Interstate 15, just south of Brigham City.
Troopers say traffic was being slowed and diverted to another lane to avoid a grass fire in the median. Jackson's Ford Escape was unable to stop in time and swerved, striking the back of the truck.
The Escape spun and hit a guardrail before hitting a Pontiac driven by an 80-year-old North Ogden man.
Authorities say 28-year-old Jeri Jackson was a passenger in the Escape and was injured. No others in the crash were hurt.
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