The paper empirically examines labor market matching as a source of urban agglomeration economies. We work from the hypothesis that job turnover leads to tighter labor matches and estimate the relationship between urbanization and the job mobility of young men. Using a panel from the National...

Probing a die-hard traffic congestion controversy, this paper scrutinizes two key variables, density and flow, under equilibrium versus optimal states. Optimization requires equilibrium flow to decrease under mild congestion, but increase under hyper-congestion. However, both increasing flow...