A 25-year-old woman riding a Divvy bike who died Friday morning following a crash involving a flatbed truck in Chicago's Avondale neighborhood is believed to be the first person killed while riding a bike-sharing bicycle in the United States.

The woman's death is believed to be the first bike-share fatality in the United States since the first bike-share program started in Tulsa, Okla., in 2007,

Transportation experts have attributed the lower collision and injury rate to a number of factors, including the shared bike’s bulky, heavy design, which cuts speed, discourages risky maneuvers and increases visibility.