RESIDENTIAL ZONING The Quiet You Are Entitled To

This close proximity is resulting in noise complaints between neighbors. ... One common concern is the noise generated from mechanical equipment servicing the establishments in these areas and how it affects the surrounding residential communities. As a result, city and state governments are developing noise ordinances.
Noise Ordinance: Noise Regulations from U.S. Cities
www.kineticsnoise.com/industrial/noise_ordinance.html

The basic purpose and function of zoning is to divide a municipality into residential, commercial, and industrial districts (or zones), that are for the most part separate from one another, with the use of property within each district being reasonably uniform.
Land Use and Zoning Basics - FindLaw