About 10,000 MBTA passengers have signed up for the transit agency's new and improved T-Alerts system since it launched two weeks ago, but officials said they are pushing hard to get more riders on board.
The new system required passengers to re-register for service updates. About 65,000 passengers were signed up for the old T-Alerts system, which officials say was not as detailed or timely as the new one.
According to Foster, many T-Alert subscribers want to get updates on individual Green Line branches.
"As a former Green Line rider, I think that's a pretty good idea. It's something we didn't have in the past, but we're looking to add it. That refinement will be really useful," he said.
T officials have also heard from some users who complain that they get too many notifications, and others who are upset they do not get enough of them.
"All feedback is welcome," he said. "This is the T."
Sign up is available at www.mbta.com.