Dallas Area Rapid Transit (TX) is launching a service that lets passengers check the scheduled arrival time for their bus or train by text message. Passengers can text the stop identification number to DART and receive the scheduled arrival time by return message. For now, the system provided only scheduled arrival times but real-time updates are in the works. DART has started posting ID numbers on bus stop signs throughout the system, but the effort to update all 12,000 stops is expected to take several months. In the meantime, stop ID information is available on DART’s website.