E-Z Pass: Electronic toll collection system that is common in the Northeast U.S., based in New Jersey.
Electronic Toll Collection System: Metro Road Systems' division. Includes client list.
Halifax-Dartmouth Bridge Commission: Authority for the Angus L. Macdonald and A. Murray MacKay Bridges that connect Halifax to Dartmouth in Nova Scotia, Canada.
Highway Toll Administration: Provides electronic toll collection services. Site includes client information.
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.
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.
International Bridge, Tunnel and Turnpike Association: Alliance of toll operators and associated industries. Includes news and resources.
M-TAG: Electronic toll collection system for bridges and tunnels in Baltimore, Maryland, U.S.
MACPASS - Automated Toll Collection System: Service available for crossing of various bridges in the Maritime Provinces of Canada. Site includes FAQ, price information, and application forms.
Roam: Electronic toll collection system used around Sydney, Australia, including on the M7. Includes e-TAG and e-PASS transponder information.
Toll Facilities in the United States: Full and partial lists with details, courtesy the Federal Highway Administration.
Tollroads: Gives brief details about certain U.S. facilities.
TollRoadsNews: Online private newsletter providing information and commentary.
Traffic Technologies, Incorporated: Consultants for Intelligent Transportation Systems (ITS). Has links to clients.