JACKSON, Wyo. (AP) — A bus driver has proved that a runaway truck system on a highway in western Wyoming works as intended.

Andrew Williams of Jackson says the newly installed system saved his life when he lost all ability to brake on Teton Pass recently.

Williams says his brakes failed and his emergency brake snapped, forcing him to steer into a guardrail to slow down.

He then drove into a series of nets designed to stop runaway trucks on the steep pass.

Only one of the eight nets was needed to stop the bus. Williams wasn't hurt and his bus had little damage.

The system became operational in March.