160Characters Association has an article about a SMS service that delivers traffic and train reservation information to subscribers with SNCF French railways.
The SMS+ service enables travellers to find out whether the train is on time, delayed or cancelled. If the reservation has been made through the web site Voyages-sncf.com, bookings can be cancelled. Regular travellers can also make bookings. Sending the message INFO 8991 that will respond with a message confirming the status of the train. The service costs 0,35 Euros for each enquiry.
Indeed, you may have observed that SMS information services have proliferated in recent times. With the rapid adoption of even new technologies such as MMS (multi-media messaging service), one can only be optimistic about the lucrative mobile market.
Read: SNCF SMS Train Info [160Characters Association]