The Schultz curve 25 years later: a research perspective.

Area of Science:

• Environmental Acoustics
• Community Noise Impact Assessment
• Psychoacoustics

Background:

• The current technical basis for assessing transportation noise impacts relies heavily on descriptive dosage-effect relationships.
• This approach, while adopted by U.S. federal agencies for regulatory policy, is one of several historical perspectives and may not be optimal.
• The accuracy of current models for predicting noise-induced annoyance prevalence is limited, as last reviewed by the Federal Interagency Committee on Noise (FICON) a decade ago.

Purpose of the Study:

• To trace the historical development of the dosage-effect relationship used in transportation noise assessment.
• To provide a broader historical context for understanding community responses to noise.
• To identify areas for advancement in predicting community response to transportation noise.

Main Methods:

• Historical review of dosage-effect relationships in transportation noise research.
• Analysis of the evolution of community noise assessment methodologies.
• Identification of gaps in current understanding of noise annoyance.

Main Results:

• The dominant dosage-effect model for transportation noise assessment has evolved significantly over time.
• Existing models, particularly those informing regulatory policy, have limitations in accuracy and precision.
• A need exists for a deeper understanding beyond simple dose-response to improve predictions.

Conclusions:

• The reliance on a single, descriptive dosage-effect model for transportation noise impacts may be insufficient.
• Further research into the complexities of community response to noise is warranted.
• Advancements in understanding noise annoyance can lead to more effective prediction methods and policies.