Authorities are investigating a head on collision between two 18-wheelers on Eastbound I-30 in the Royse City – Fate area. Rockwall County authorities confirmed that three people were killed in the crash. Authorities say a west bound semi went across the median and crashed into another semi. Another vehicle was also involved. the East bound side of Interstate 30 between FM 35 and FM 2642 is expected to be closed for the most of the day. .