The 2016 National Transportation Noise Map dataset utilized transportation mode input data from 2016 in a model and is current as of October 2020, published by the Bureau of Transportation Statistics (BTS), and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). Please see the website https://www.bts.gov/geospatial/national-transportation-noise-map, for downloads and more information about these datasets. For web services of these data, please navigate to https://geo.dot.gov/server/rest/services/Hosted and search for service names beginning with "Noise." Please contact the NTAD Program Manager at ntad@dot.gov for any questions. Data within the National Transportation Noise Map represent potential noise levels across the nation for an average annual day for the specified year. These data are intended to facilitate the tracking of trends in transportation-related noise by mode collectively over time and should not be used to evaluate noise levels in individual locations and/or at specific times. This dataset is developed using a 24-hr equivalent A-weighted sound level (denoted by LAeq) noise metric. The results represent the approximate average noise energy due to transportation noise sources over a 24-hour period at the receptor locations where noise is computed. Layers include Aviation and Road Noise for the Lower 48 States as well as Alaska and Hawaii. The full listing can be found below. 2016 National Transportation Noise

      Alaska

             Alaska Aviation Noise
             Alaska Road and Aviation Noise
             Alaska Road Noise

      Lower 48 States (CONUS)

             Lower 48 States (CONUS) Aviation Noise
             Lower 48 States (CONUS) Road and Aviation Noise
             Lower 48 States (CONUS) Road Noise

      Hawaii

             Hawaii Aviation Noise
             Hawaii Road and Aviation Noise
             Hawaii Road Noise

The 2020 National Transportation Noise Map dataset utilized transportation mode input data from 2020 in a model and is current as of October 2022, published by the Bureau of Transportation Statistics (BTS), and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). Please see the website https://www.bts.gov/geospatial/national-transportation-noise-map, for downloads and more information about these datasets. For web services of these data, please navigate to https://geo.dot.gov/server/rest/services/Hosted and search for service names beginning with "Noise." Please contact j.goworowska@dot.gov for any questions. Data within the National Transportation Noise Map represent potential noise levels across the nation for an average annual day for the specified year. These data are intended to facilitate the tracking of trends in transportation-related noise by mode collectively over time and should not be used to evaluate noise levels in individual locations and/or at specific times. This dataset is developed using a 24-hr equivalent A-weighted sound level (denoted by LAeq) noise metric. The results represent the approximate average noise energy due to transportation noise sources over a 24-hour period at the receptor locations where noise is computed. Layers include Aviation, Freight and Passenger Rail, and Road Noise for the Lower 48 States as well as Alaska and Hawaii. The full listing can be found below. 2020 National Transportation Noise

      Alaska

             Alaska Aviation Noise
             Alaska Freight and Passenger Rail Noise
             Alaska Freight and Passenger Rail, Road, and Aviation Noise
             Alaska Road and Aviation Noise
             Alaska Road Noise

      Lower 48 States (CONUS)

             Lower 48 States (CONUS) Aviation Noise
             Lower 48 States (CONUS) Freight and Passenger Rail Noise
             Lower 48 States (CONUS) Freight and Passenger Rail, Road, and Aviation Noise
             Lower 48 States (CONUS) Road and Aviation Noise
             Lower 48 States (CONUS) Road Noise

      Hawaii

             Hawaii Aviation Noise
             Hawaii Road and Aviation Noise
             Hawaii Road Noise