As noted by IT professional and writer Tom Bridge on Twitter, public transit information for Los Angeles has started to go live in Apple Maps on both iOS and El Capitan. The rollout adds another major city to a feature that launched as part of iOS 9.
Transit information may still be rolling out to users. Support will include train, light rail and bus services in addition to transit directions. In October, Apple added transit directions for both Sydney and Boston. Apple has not yet added Los Angeles to the transit section of its iOS 9 feature page.