Complex sentence: TARC operates a fleet of 225 accessible buses, including numerous Hybrids, starting in 2004 TARC purchased Hybrid buses, and by 2008 started purchasing clean diesel buses for a cleaner greener fleet.
Split into simpler sentences: TARC operates a fleet of 225 accessible buses, including numerous hybrids. Starting in 2004,TARC purchased hybrids, and by 2008 started purchasing clean diesel buses for a cleaner, greener fleet.