Original: In August 1995, the TTC suffered the deadliest subway accident in Canadian history known as the Russell Hill accident, on the Yonge-University-Spadina Line south of St. Clair West station.
Simplified: In August 1995, the TTC had a really bad subway accident in what it calls the Russell Hill accident, on the Yonge-University-Spadina Line south of St. Clair West station.