. Modern planning Many modern urban developments don't incorporate alleys. In some locations installation of gates to restrict alleyway access have significantly reduced burglary rates. On blocks where gates are not installed, residents sometimes erect home-made barricades at alley entrances. Andrés Duany, American architect and urban planner has long espoused the use of alleys as leading to a better integration of automobile and foot traffic in a neighborhood. In some modern urban devel… (More on Alley)