For general police alarm tackling interface, the police force distribution and police alarms distribution should be 
displayed on it by a customized period. When a police alarm comes, the system can refresh the electronic map 
immediately and show just the distribution status of the rescue resources nearbylike patrol cars, police boxes, police 
force, and hospitals. Then commanding persons can dispatch relevant resources in accordance with the display 
information, by voice or message. The system can also analyze and give optimized and shortest route instruction for 
rescue.