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Press Release

State of California Approves Regulations Modernizing Statewide Interoperable Electronic Tolling System

CONTACT: Bill Cramer, Communications Director
202-210-2962 (mobile)

Regulations Will Establish 6C Toll Collection on All California Toll Roads by January 1st, 2019

Washington, D.C. – The State of California’s Office of Administrative Law has issued a notice of approval of regulatory changes paving the way for the adoption of the ISO 18000-63 (more commonly known as “6C”) electronic toll collection protocol on all toll roads throughout the state.  The approval by the Office of Administrative Law creates an effective date for the new regulatory changes to take place on January 1st, 2018 and establishes 6C as the State of California’s official electronic toll collection protocol on January 1st, 2019.  The regulations will require a complete phase out of the existing Title 21 protocol by January 1st, 2024.

“This is a significant milestone for California in our continued adoption of modern technology and solutions for tolling,” said Samuel Johnson, Chair of the California Toll Operators Coalition and incoming 2018 Second Vice President of the International Bridge, Tunnel and Turnpike Association.  “Use of the 6C protocol will provide for significant cost avoidance in the acquisition and management of transponders for the 14 agencies responsible for operating California’s tolled bridges, roads and express lanes. This adoption will also accelerate national efforts towards interoperability, paving the way for west coast customers to use their account to pay for tolls when traveling in California, Colorado, Washington, Utah and Oregon.”

Since 2010, the International Bridge, Tunnel and Turnpike Association (IBTTA) has convened a nationwide Interoperability Committee (IOP) comprised of toll agencies throughout the country with the mission of advancing the goal of achieving nationwide interoperability. 

“Today’s announcement by The California Department of Transportation (Caltrans) is a landmark moment in the work to advance the nation towards interoperability on all electronic tolling systems,” said Patrick Jones, IBTTA Executive Director & CEO.  “As more of our member agencies continue to find ways to agree upon the creation of regional hubs of interoperability, it moves us one step closer to achieving nationwide interoperability.  Most importantly, today’s decision is an important development for the enhanced mobility of California.”

Since the introduction of electronic toll collection (ETC) in the United States in 1989, toll agencies have made substantial investments in ETC technology and millions of customers have enrolled in ETC programs.  The goal of nationwide ETC interoperability (NIOP) is the establishment of a system in which customers who have established pre-paid toll accounts in their home state have the ability to pay tolls on any participating toll facility in the country using their existing toll account.

Currently the 6C protocol is used in Washington, Colorado, Utah, Kentucky, Indiana, Georgia, North Carolina and Louisiana. The California action opens the greater opportunity to allow these states to become interoperable between each other.



The International Bridge, Tunnel and Turnpike Association (IBTTA) is the worldwide association for the owners and operators of toll facilities and the businesses that serve them. Founded in 1932, IBTTA has members in more than 26 countries on six continents. Through advocacy, thought leadership and education, members are implementing state-of-the-art, innovative user-based transportation financing solutions to address the critical infrastructure challenges of the 21st Century. For more information, visit or join us on Twitter @IBTTA or #TollRoads.

State of California Approves Regulations Modernizing Statewide Interoperable Electronic Tolling System