At the neighborhood level, the most negatively correlated indicator to population growth in Baltimore is the percent of the population that spends more than 45 minutes to get to work. That means that the more transit-dependent people are in your neighborhood with long commutes, the more likely your neighborhood is to lose population. The Sandtown-Winchester and Harlem Park communities, which lie directly along the Red Line, have the highest percentage in Baltimore (34.1 percent) of people commuting more than 45 minutes. The Red Line was the key investment to bring that percentage down. It would have helped reverse population loss in the community, but it would have also, based on recent studies by Harvard economist Raj Chetty and others, removed the main barrier to economic mobility for people currently living in poverty.