System Freeze: Bus Error

Two charter buses packed with passengers slid down a slippery hill in Seattle, and one was left hanging precariously over a 30-foot wall beside Interstate 5.
About 60 passengers were aboard the two buses, which crashed through a metal railing and screeched to a stop seconds before toppling onto the freeway below.
The bizarre accident happened at about 12:30 p.m. as the buses nosed down a hill on East Thomas Street approaching Melrose Avenue East in central Seattle.
One of the buses reportedly collided with the other, triggering the accident.
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