Video shows a San Francisco Muni operator asleep before a July 31 crash involving two empty trains that shattered window glass. SFMTA called the incident “unacc

Video shows a San Francisco Muni operator asleep before a July 31 crash involving two empty trains that shattered window glass. SFMTA called the incident “unacceptable,” marking the second time in a year a Muni driver has been caught sleeping on video. [▻](https://video.twimg.com/amplify_video/209…