Walk the beat
Definition 1 of 1
Pro Tip 1/3Police Context
Used specifically in law enforcement contexts to describe police patrol routines on foot. 
After graduating from the academy, she was eager to walk the beat in her hometown.
Pro Tip 2/3Slang Nuance
'Walk the beat' has a colloquial feel, often used in casual conversations rather than formal reports. 
I prefer to walk the beat than drive; it keeps me connected to the neighborhood.
Pro Tip 3/3Experience Implied
The phrase implies gaining experience and knowledge of the local area and people. 
You really learn about the city when you walk the beat every day.