SALT LAKE CITY – A bus carrying Chinese-speaking tourists crashed on the way to a national park in Utah, killing four people and critically injuring as many as 15 others, authorities said Friday. It appears the driver might have swerved on a two-lane highway leading to Bryce Canyon National Park and then tried to overcorrect, sending the tour bus rolling into a guardrail, Garfield County Sheriff Danny Perkins said. The driver survived and was talking with investigators, Utah Highway Patrol Sgt.