I wouldn't wax rhapsodic about the half centennial of the Jones Falls Expressway ("City's six-lane Main Street at 50," Dec. 16). It was the evacuation route for white flight at a time when the strictures of Jim Crow were in retreat under the Warren Court. How else to explain that the planned "transit line" down the center of the road was never built? Coupled with the dismantling of commuter rail and streetcars around the same time, the JFX could guarantee in and out privileges to white suburbanites but left urban blacks without cars with no way out. The irony is...