Trucker in deadly Colorado pileup pleads not guilty

GOLDEN, Colo. (AP) — A truck driver accused of causing a fiery pileup that killed four people on a Colorado interstate has pleaded not guilty to vehicular homicide and other charges.
KDVR-TV reports 24-year-old Rogel Lazaro Aguilera-Mederos, of Houston, appeared in court in Jefferson County on Thursday to answer to charges stemming from the April 25 crash on Interstate 70 west of Denver.
He has said the brakes on his semitrailer failed before he plowed into slowed traffic just after the in