Copley said the earthquake early warning system "dovetails into our existing procedures." After service braking is triggered, supervisors in the control center can assess whether trains need to come to a full stop and hold. In most situations, trains remain stopped for five minutes before resuming at slow speed while scanning the tracks for problems.
"This earthquake early warning system helps BART not only protect the riders but also preserve an important resource for the Bay Area after an earthquake: a functioning transportation system," said Hellweg.
The California Integrated Seismic Network is a collaboration among various groups that operate seismic sensors, including the Berkeley Seismological Laboratory, U.S. Geological Survey, California Geological Survey, Caltech Seismological Laboratory and the California Emergency Management Agency.
Allen and other seismologists will be in Washington, D.C., on Friday, Sept. 28, to talk with House and Senate staffers about the benefits of earthquake early warning systems.