Line had a causal impact of improving people's access to health care by providing reliable public transportation. Researchers from the University of Minnesota, Harvard Medical School, and the Urban Institute conducted a Difference in differences study and found that the opening of the light rail line had a causal impact on reducing the rate of missed doctors appointments. References External links Metro Council Central Corridor Site Businesses on the Green Line Light rail in Minnesota Transportation in Minneapolis Transportation in Saint Paul, Minnesota Railway lines opened in 2014 2014 establishments in Minnesota 750 V DC railway electrification Metro Transit (Minnesota)