Umler® is the source of critical data for more than two million pieces of North American rail, steamship, and highway equipment.

The Umler system provides secure access for equipment management and reporting tools, helping equipment owners provide high-quality data to logistics partners and customers.

The system identifies internal and external dimensions, capacities, weight information, and other specific characteristics of freight cars­–as well as intermodal trailers and containers. It also serves as the base file for other standard industry equipment reference and management systems.

Railroads, equipment owners, agents, shippers, ports, suppliers, industry consultants, government agencies, and railcar service providers use Umler for the safe and efficient placement, movement, and interchange of railcars.

Umler also includes these enhanced functions:

  • Umler Change Request Form: Provide details for all Umler system changes, including new elements, permissible values and business rules. Complete the form and email it to
  • Component Registry: Register certain railcar components and associate them with equipment for greater visibility into equipment health.
  • Conflict Management: Identify equipment records in conflict, with supporting processes to resolve issues. Error messages identify changes that must be made to correct invalid equipment data.
  • Equipment Cloning: Create single or multiple equipment records using an existing railcar as a template. Minimal changes reduce the time required to build new fleets in Umler.
  • Equipment Lineage: Track ownership and equipment changes throughout its history, including inspections and equipment modifications.
  • Equipment Status: Track active, inactive, and pre-registered rail assets to get accurate fleet size and makeup.
  • Locomotive Inspection and Repair ReportThe Blue Card tracks FRA locomotive inspections in this downloadable spreadsheet.
  • Notice Management and Ticklers: Alerts and logs help users stay on top of equipment changes and issues.
  • Query Data: Provides immediate online reports, including self-service data query tools and custom reports with Advanced Query.
  • Restencil Support: Create a new equipment record from a prior equipment registration. Support is provided for single or multiple restencil to enable change of ownership for entire fleets. If desired, users can request that Railinc perform restencil services by completing the Umler Restencil-Request to Transfer Equipment Form.
  • System-Generated Elements: Delivers information to users, such as automatically-generated Equipment Type Codes and End-of-Service Dates
  • Statistics and Analysis Services: Offers data analysis services to equipment owners who may contact the Railinc Customer Success Center with service requests. 

Umler® is a registered trademark of Railinc Corp.

Legal Disclaimer: Any actions taken in reliance on or pursuant to this website are subject to Railinc's Terms of Use, as set forth in, and all AAR rules. 

Get Started with Umler

Easily and quickly begin using Umler by establishing a Single Sign-On (SSO) Account and registering for FindUs.Rail using the instructions below.

Single Sign-On Account (required)

Go to the Single Sign-On portal on Railinc's home page. Follow the instructions to register or log in. Contact the Railinc Customer Success Center by email at or by phone at 877-724-5462 with questions.

FindUs.Rail (required)

Industry rules require all Umler system users to register in the FindUs.Rail directory before being granted access to the system. Railinc will use this contact information to communicate about Umler training opportunities and system updates. Log in to the Railinc home page to register after establishing an SSO account (see above).

Once approved, users may access Umler by logging into SSO accounts at the Railinc home page. The Launch Pad will be displayed and Umler will be available under "My Applications."

Training modules and web demos, as well as the Umler reference materials, are available for approved users free of charge.

Umler Reference Materials

Reference materials play an important role in helping you understand and use the Umler system. Umler users often have a copy of the user guide and the data specification manual within reach when adding or updating equipment in the system. Here are essential resources for using the Umler system:

  • Umler User Guide – This is a key resource for understanding how to accomplish tasks in the system. Web users will find the User Guide easy to use since topics are organized in order of appearance in the online navigation.
  • Umler Data Specification Manual (DSM) – The DSM is useful while users are in the process of adding or modifying equipment. Each data element is described in detail. Data Element descriptions, permissible values, and rules for data entry are provided to assist users in accurate data entry.
  • Umler TRAIN II Messaging Specification Manual - This messaging specification manual is used to describe the structure of TRAIN II inbound and outbound messages.
  • Umler FAQs – This document of frequently asked questions can be used as a quick reference for common tasks.
  • Umler Web Services User Guide - This document is the key resource for using web services to add, modify, delete, addback and query records in Umler.


Umler Data Reference Files

The documents below provide information about data in Umler. This includes full element definition models as well as mapping documents that show the conversion of legacy UMLER data to the Umler system and back.

Umler Quick Guides

Railinc has developed a number of Quick Guides to help you learn different aspects of the Umler system. Each Quick Guide focuses on a specific area of Umler functionality. For additional assistance with these tasks, consult the Umler Demos above and the Umler User Guide.

Click on the links below to view the Quick Guides.

SSO and Application Access


Account Administration

Equipment Queries

Equipment Maintenance