Patrol has three patrols; this means answering calls, maintaining a police presence to deter crime, and probing suspicious circumstances. Of these, the preventive patrol is the most controversial. A presumed advantage of patrol is that marked police units patrolling randomly through communities ostensibly create the feeling that the police are everywhere. Patrol remains the backbone of police operations. A disadvantage of marked patrol is that it reduces police contacts with citizens. The police chief except that the citizens and criminals are exposed to preventive patrol, but they are not exposed to preventive patrol. (Deployment by analysis. 2000) If you look how the world has changed over the years, I do not think the experiment has made
