Fast public transit networks are widely believed to (i) attract more riders and reduce negative
externalities of driving, and (ii) reduce inequality by improving mobility for the urban poor …

I quantify the welfare implications of competition and capacity constraints on the spatial
allocation of supply in transportation markets. Using new data on shared electric scooters, I …

Residential segregation by income and race is a salient feature of most US cities. An
important determinant of residential location choice is access to desirable urban amenities …