The general manager of the Metro system, John B. Catoe Jr., said one train had stopped at a platform and was waiting for permission to proceed when it was hit from behind by the second train.

地铁公司的总经理John B. Catoe Jr.说，事发当时其中一列列车正停在站台边，等待发出驶出的命令，就在这时它被另一列来自后方的列车撞上了。

youdao

"She saved lives, " said Metro General Manager John Catoe at a memorial service Friday for Jeanice McMillan.

CNN: Metro driver called a hero who saved lives in crash

"If there are changes we can make to those cars, we will do so, " said John Catoe Jr.

CNN: Investigator: D.C. Metro crash 'a scene of real devastation'

Both trains were on the same track, and one of them was stationary when the crash happened, said John Catoe, Metro general manager.

CNN: Six killed in Washington-area Metro train collision