» E-Z Pass    Electronic toll collection system that is common in the Northeast U.S., based in New Jersey.    http://www.ezpass.com/

» E-ZPass Interagency Group    Provides electronic toll collection interoperation. Lists members and gives contact information.    http://www.e-zpassiag.com/

» Electronic Toll Collection System    Metro Road Systems' division. Includes client list.    http://www.metroroadsystems.com/toll_collections.shtml

» Halifax-Dartmouth Bridge Commission    Authority for the Angus L. Macdonald and A. Murray MacKay Bridges that connect Halifax to Dartmouth in Nova Scotia, Canada.    http://www.hdbc.ca/

» Highway Toll Administration    Provides electronic toll collection services. Site includes client information.    http://www.htallc.com/

» HowStuffWorks: How E-ZPass Works    Fully illustrated tutorial explains E-Zpass, an electronic toll-collection system consisting of a 900-MHz band car transponder, antenna, lane controller, LAN and host computer system.    http://www.howstuffworks.com/e-zpass.htm

» HowStuffWorks: How Intelligent Highways Will Work    Graphic narrative shows the future freeway's new, cheaper technology and explains how ubiquitous digital devices will aid in easing our traffic woes, perhaps using triangulation.    http://www.howstuffworks.com/intelligent-highway.htm

» International Bridge, Tunnel and Turnpike Association    Alliance of toll operators and associated industries. Includes news and resources.    http://www.ibtta.org/

» M-TAG    Electronic toll collection system for bridges and tunnels in Baltimore, Maryland, U.S.    http://www.m-tag.com/

» MACPASS - Automated Toll Collection System    Service available for crossing of various bridges in the Maritime Provinces of Canada. FAQs, price information, and application forms.    http://www.macpass.com/

» Roam    Electronic toll collection system used around Sydney, Australia, including on the M7. Includes e-TAG and e-PASS transponder information.    http://www.roam.com.au/

» Toll Facilities in the United States    Full and partial lists with details, courtesy the Federal Highway Administration.    http://www.fhwa.dot.gov/ohim/tollpage.htm

» TollRoadsNews    Online private newsletter providing information and commentary.    http://www.tollroadsnews.com/

» Traffic Technologies, Incorporated    Consultants for Intelligent Transportation Systems (ITS). Has links to clients.    http://www.t-t-i.com/