Robert Raburn

The BART Board of Directors voted 6-2 to reinstitute a mask mandate in paid areas of the BART until Oct. 1, effective immediately.

The ShakeAlert system detects initial seismic P-waves, which are nondamaging, to allow BART to prepare for the damaging S-waves that follow. The system was described as a lifesaver by lawmakers and BART representatives in a press conference following Monday’s demonstration.

BART’s new 10-car trains are expected to roll out by early December despite failing a key safety inspection earlier this month.

BART rider approval has reached a historic low in 2016, according to a BART customer satisfaction study presented to the Board of Directors Wednesday.

After BART’s widespread use of decoy cameras became public knowledge last month, BART announced plans last week to install functioning cameras in all 669 train cars in its current fleet.