25-year-old San Jose resident Christopher Uchicua turned himself into police on Wednesday.
Authorities have not made any arrests, but were investigating whether there was a verbal altercation before a man fell to his death from the Industrial Parkway overpass.
Caltrain has resumed service after a man who appeared to have stepped on to the tracks intentionally was killed by a train in Atherton on Thursday night.
San Francisco will consider lowering speed limits on city streets to as low as 20 miles an hour in some cases to achieve its goal of ending pedestrian fatalities.
A southbound Caltrain struck and killed an adult male on the tracks south of Rengstorff Avenue in Mountain View on Wednesday morning.
A person was struck and killed by a train at the Pleasant Hill BART station Thursday morning, shutting down the station and prompting delays of about 20 minutes, a BART spokeswoman said.
Police are investigating a fatal, high-speed crash that caused a power outage in Richmond on Tuesday night.
A Bay Area family had sued a skydiving school after their daughter plunged to her death. While their daughter checked out the school and found it had a great safety record, the school never revealed that other people died there.
The roadway is now open, but police are still looking for the driver who struck the pedestrian.
A female was struck and killed by a freight train traveling through Martinez Sunday evening, police said.