Portal:Trains/Selected article/Week 48, 2015

The Blue Line, also known as the O'Hare-Congress Line and the West-Northwest Line, consists of a 26.93 mi long Chicago 'L' line which extends through the Loop from O'Hare International Airport at the far northwest end of the city, through downtown via the Milwaukee-Dearborn Subway and across the West Side to its southwest end at Forest Park, with a total of 33 stations. It is the CTA's second busiest rail line, with an average of 186,796 passengers boarding each weekday in September 2012. The Blue Line and Red Line are the only two routes of the CTA rail system to currently run 24 hours a day and is one of only six mass-transit rail lines in the United States to do so (the others being the PATCO Speedline, Staten Island Railway, the PATH lines, one line of Minneapolis-St. Paul's METRO and the New York City Subway). The Blue Line is one of the 5 rail lines that run into Chicago suburbs, with the others being the Green, Purple, Pink, and Yellow lines.