MTA TrainTime

"The MTA mobile app allows you to additionally opt in to consenting to always share your location. This sharing is required if you want to use the mobile app's optional "Smart Favorites / Smart Alerts" functionality. If you opt in to Smart Favorites / Smart Alerts, we will collect data when you are traveling on MTA services and also when you are traveling by other means – for example, when you are in a car or on non-MTA forms of mass transit."

The app can continuously track your location even when you're not using MTA services — including when you're in a car or on non-MTA transit — and this data is sent to a third party (Axon Vibe).

"If you choose to use Smart Favorites / Smart Alerts, the data associated with your use is collected and stored entirely by Axon Vibe, a third-party company, and not by the MTA. Axon Vibe uses your data only to provide you with targeted travel information. Axon Vibe will also from time to time share anonymized, aggregated information with the MTA and organizations we work with to help us better understand travel patterns in the region."

Your continuous location data is collected and stored by a third-party company (Axon Vibe), governed by their own privacy policy, and aggregated data is shared with unspecified 'organizations we work with.'

"Please note that this Policy may change from time to time without special notice to you, so please check back to review the most recent version of this Policy. By using the MTA Website and Apps at any time, you agree to the Policy then in effect."

MTA can change the privacy policy at any time without notifying users, and continued use is treated as acceptance of the new terms.

"The information collected through the MTA Website and Apps is retained by the MTA Agencies in accordance with the applicable records retention and disposition requirements of New York law. Information concerning these records retention and disposition schedules may be obtained at the New York State Archives and by contacting the MTA as listed below."

There is no clear, specific retention timeline disclosed — users are directed to look up obscure state records schedules to understand how long their data is kept.