| E-Z Pass | | Electronic toll collection system that is common in the Northeast U.S., based in New Jersey. |
| 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. |
| 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. |
| Tollroads | | Gives brief details about certain U.S. facilities. |
| TollRoadsNews | | Online private newsletter providing information and commentary. | |
| | | |