HOUSTON (KTRK) -- A big mess was left in northwest Houston after a train crashed into the trailer of a truck Saturday afternoon.Police say the big rig driver pulled onto the tracks at 43rd and Hempstead. The railroad crossing arms came down.The truck driver pulled forward as much as he could, but couldn't get out of the train's way in time.The truck spilled the empty cardboard boxes it was carrying. No one was hurt.