The primary activity of the VT Communications Based Train Control and Signals standards committee is organized in working groups and study groups. The working groups focus on IEEE Standards 1474 Part 2, Part 3, and Part 4, which include user interface requirements, recommended practice for system design and functional allocations, and recommended practice for functional testing of CBTC systems. The study groups recently finalized a report on cybersecurity in CBTC and have on-going work for a new report on Artificial Intelligence in Rail Transit.