And what do you do if there's a suicide (unfortunately) on the HSR? The Caltrain that runs down the Peninsula from SF to SJ has a pretty high suicide rate; high enough, that there are people posted to look for potential suiciders.
Part of the cost is improving the peninsula rail corridor for full grade separation, along with the suicide prevention improvements Caltrain is already performing on the corridor. When it's built, there should be a lot fewer places for suicide and a lot tighter control.
