“ If you add more foot patrols, citizens notice right away. And they feel more at ease and safer, even if, in total, there aren’t more police on the streets,” says George Kelling, a professor of criminal justice at Rutgers University. Officers on foot are able to pick up all manner of knowledge that they wouldn’t be able to pick up in a car. They duck into stores, restaurants and bars, learning the managers’ names and what they’re concerned about.”
Source: forbes.com