Excerpt (The "Safety Feature" mentioned is PTC)
SANTA ROSA — Sonoma–Marin Area Rail Transit, or SMART, gave a first look at what will be the nerve center for the forthcoming line as well as safety features, chiefly a new-to-passenger-rail system designed to prevent the kind of large-scale disasters that grabbed national headlines six months ago.
Unveiled was the recently completed Rail Operations Center, or ROC, located where the tracks cross Airport Boulevard. The Jan. 27 media tour was part of a safety-awareness campaign ahead of regular service starting, scheduled for late fall
The North Bay Business Journal