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

Toll Roads of America  
   A list and detailed information about all the toll roads in the US.
   http://www.contrib.andrew.cmu.edu/~mn2n/tollroads.html

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

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

MACPASS - Automated Toll Collection System  
   MACPASS is a small transponder device that lets you pay your bridge tolls electronically and allows you to make quicker, easier toll payments without stopping to use cash or tokens.
   http://www.macpass.ca

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

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

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

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

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

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