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Welcome to the E-ZPass Group National Interoperability Portal.

This area of our website is dedicated to the sharing of business rules, file specifications, documents, plans and other pertinent information that may assist other toll agencies in advancing interoperability.

The E-ZPass Group operates the largest, most successful toll interoperability network in the world, with more than 34 million toll transponders in use and collects over $11 billion in annual toll revenues of which more than $9 billion is collected electronically and over $4 billion transferred between agencies through our toll reciprocity programs.

The information found in this section of the website has served the E-ZPass Group well over the many years of our operations and may be beneficial to other agencies working toward expanding interoperability.

The members of the E-ZPass Group stand ready to work with our industry partners in advancing the goal of national interoperability. 



 operatingreciprocity     policies  test_plans


file specs       TDM Spec