One person was killed and four others injured Wednesday when an RV pulling a pickup had a brake failure on Teton Pass, the Wyoming Highway Patrol says.

It happened at about 3:53 p.m. at milepost 6.5 on Wyoming 22 (Teton Pass), between the Idaho-Wyoming state line and Jackson.

According to a fatality crash summary, five people were in an RV that was headed east down steep mountain grades behind other traffic, and the vehicle in front of them kept braking, causing the RV driver to brake more than he wanted to.

"The RV's brakes overheated, and the vehicle began to run away."

"As the RV neared the bottom, the RV's brakes overheated, and the vehicle began to run away," the summary reads.

The RV driver reportedly passed traffic and began to drive off the highway in an attempt to stop, but he lost control of the RV and rolled it.

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The rollover left the driver and three of his passengers injured, but, sadly, his other passenger, 72-year-old Nevada resident Kathleen Savko, who was not wearing her seat belt, didn't survive the crash.

The summary lists equipment failure as a possible contributing factor.

Savko is the 60th reported person to die on Wyoming's highways so far this year.

Road Fatalities: Most Dangerous Time, Day, and Month by State

Knowing what dangers are ahead is part of being a good driver. Georgia-based attorneys at Bader Scott gathered information from the National Highway Safety Transportation Administration (NHTSA) to determine the most fatal time, day, and month to be on the road in each of the 50 states.

Gallery Credit: Scott Clow