South Shore Line (SSL) recognizes the continued loyalty of monthly ticket holders and wants to express their gratitude by offering a promotion for monthly ticket holders in early May.Saturday, May 4 through Sunday, May 5, the SSL is offering a “friends ride free” weekend to monthly commuters, inviting one friend to ride free with a commuter who holds a monthly pass. No ticket is required for the friend. The SSL offers other commuter perks, including transit benefit programs, discounts for monthly passes, quiet cars on every rush hour train and onboard Wi-Fi. For more information on train schedules, discounts and to plan a trip, please visit or download the SSL app (available for iPhone and Android)The South Shore Line is a commuter rail line operated by the Northern Indiana Commuter Transportation District (NICTD) between Millennium Station in downtown Chicago and the South Bend International Airport.