About the CEDB

The Comparative Emissions DataBase (CEDB) web interface was created by Aerodyne Research, Inc. (ARI) under the direction and funding of the US DOT and FAA. The objective of this web tool is to facilitate application of the extensive data available in the CEDB, for comparing the potential environmental impact (especially for climate change) of moving passengers and freight via various transportation modes. The CEDB incorporates data from various sources – including measurements by ARI using novel high resolution instruments invented at ARI, as well as other research data available in the scientific literature – and covers air, road, rail and marine transportation modes. Other data sources include certification sources (e.g. EPA certification data).

Currently, the CEDB contains over 60,000 emission data entries, with an additional 100,000s of auxiliary data entries describing the emissions (e.g. measurement conditions, data source references, engine type, vehicle type and properties, etc.).

The CEDB web interface was designed to be used in 3 ways:

  1. Searching and extracting emission data for use in emission models (“Search Database” option within the “Home” menu)
  2. Performing quick, rough-estimate intermodal comparison calculations within the website, using CEDB data (“Emissions Calculators” menu); and
  3. Editing the database (“Login”).

The first two uses are accessible to the general public (no login required), while the third is restricted to DOT-authorized personnel with the required login credentials (a username and password are required). Users may also browse the database using the “Browse Database” menu, without a login account.

For questions, comments, or suggestions, please contact Aerodyne Research

CEDB Manual

A manual for CEDB is available for download. PDF

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