Complex sentence: The UC Irvine Institute of Transportation Studies (ITS), a University of California organized research unit with branches at UC Irvine, UC Davis, and UC Berkeley, was established to foster research, education, and training in the field of transportation.
Split into simpler sentences: The UC Irvine Institute of Transportation Studies (ITS), is a University of California organized research unit with sister branches at UC Davis, and UC Berkeley. ITS was established to foster research, education, and training in the field of transportation.