can somebody summarize the rules for flying over cities at night. I know I must have a light visible for 2 statute miles (?) but in terms of rules for flying over cars, roads, buildings...other considerations, I'd appreciate a summary. I have some controlled areas locally in my city I'd like to do some night flying. I can get permission for the class D areas and their isn't really much concern about aircraft but I want to be OK with other rules. The line of sight will be an interesting challenge to plan out as I will not be on an elevated hill.