https://www.bart.gov/news/articles/2021/news20210726-0
A BART train at night

New hours

Midnight service has returned Monday-Saturday

https://www.bart.gov/news/articles/2021/news20210122
Air filter

Ventilation on BART

What you need to know about airflow and filters

https://www.bart.gov/news/articles/2020/news20200526
2 station agents in masks greeting riders

Welcome Back Plan

What riders can expect on BART