E-Z Pass - Electronic toll collection system that is common in the Northeast U.S., based in New Jersey.
E-ZPass Interagency Group - Provides electronic toll collection interoperation. Lists members and gives contact information.
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.
MACPASS - Automated Toll Collection System - Service available for crossing of various bridges in the Maritime Provinces of Canada. FAQs, price information, and application forms.
M-TAG - Electronic toll collection system for bridges and tunnels in Baltimore, Maryland, U.S.
Roam - Electronic toll collection system used around Sydney, Australia, including on the M7. Includes e-TAG and e-PASS transponder information.