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    • Inequity Identification Tool (IIT) Air Cost

    Metadata Updated: April 26, 2024

    This file contains the road segments from FHWA's HPMS dataset with estimates of the cost of air pollution from the traffic on that segment. The cost of air pollution is estimated using a combination of traffic volumes and speeds from FHWA's HPMS, the emission rate of PM2.5 from EPA's MOVES, the dispersion rate and pollutant concentration from EPA's AERMOD, the per unit health costs from a series of studies cited in EPA's COBRA, and the population affected from the US Census ACS 2019. The resulting cost per road segment is transformed into cost per 1/10 mile length of roadway and binned into 7 different categories to reduce the file size. For more information on this data please visit: https://maps.dot.gov/fhwa/iit/

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date April 26, 2024
    Metadata Updated Date April 26, 2024

    Metadata Source

    Harvested from DOT Socrata Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 26, 2024
    Metadata Updated Date April 26, 2024
    Publisher Federal Highway Administration
    Maintainer
    Identifier https://data.transportation.gov/api/views/q4t7-b6y5
    Data First Published 2024-03-27
    Language en-US
    Data Last Modified 2024-04-23
    Category Roadways and Bridges
    Public Access Level public
    Bureau Code 021:15
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.transportation.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id cb659c0f-c891-44a2-a4af-192d921ea702
    Harvest Source Id a776e4b7-8221-443c-85ed-c5ee5db0c360
    Harvest Source Title DOT Socrata Data.json
    Homepage URL https://maps.dot.gov/fhwa/iit/
    License https://www.usa.gov/government-works
    Program Code 021:009
    Source Datajson Identifier True
    Source Hash 6de4b1b233802295ba181f4cd40eea9f58a9a0eb1af3de712f76ab7b8d5df13a
    Source Schema Version 1.1

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