Transit Noise and Vibration - Impact Assessment





1.1 PURPOSE

1. INTRODUCTION

Noise and vibration assessments are key elements of the environmental impact assessment process for mass

transit projects. Experience has shown that noise and vibration are among the major concerns with regard to

the effects of a transit project on the surrounding community. A transit system is of necessity placed near

population centers and often causes significant noise and vibration at nearby residences and other sensitive

types of land use.


This manual is intended to provide guidance in preparing and reviewing the noise and vibration sections of

environmental submittals from grant applicants. In the interests of promoting quality and uniformity in

assessments, the manual will be used by project sponsors and consultants in performing noise and vibration

analyses for inclusion in environmental documents. The manual sets forth the methods and procedures for

determining the level of noise and vibration impact resulting from most federally-funded transit projects and

for determining what can be done to mitigate such impact. Since the methods have been developed to assess

typical transit projects, there will be some situations not explicitly covered in this manual. The exercise of

professional judgment may be required to extend the basic methods in these cases.


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