The Association of American Railroads' (AAR) Hazardous Materials Shipping Description Database contains Hazardous Materials Regulatory information which allows railroads and customers to properly create EDI transactions and shipping papers for hazardous materials being shipped in the United States, Canada, and internationally. The database allows for error checking when EDI transactions are received from connecting carriers and customers.

For more information about ordering this and other Railinc publications, see Railinc Publications.