| TerraCaching Fewer caches listed than on other sites, but they are rated by members, to encourage memorable and challenging hunts. Wiki, map, how to become a member. |
| Abandoned_Pennsylvania_Turnpike Trip log and other information. |
| The_Abandoned_Pennsylvania_Turnpike Gives a background, and includes photographs and visiting tips, of this section near Breezewood. |
| Historic_Pennsylvania_Turnpike Photos and topo maps of the bypassed tunnels. |
| The_Penna_Turnpike_at_Pennsylvania_Road_Photos Photo essay of the Breezewood area and details on St. John the Baptist Catholic Church and the Midway Service Plaza. |
| Pennsylvania_Turnpike Extensive historical overview and exit guide. |
| The_Pennsylvania_Turnpike_--_a_History Includes postcards from the early days including those of the original two-lane tunnels. Also contains recent pictures of abandoned sections. |
| Pennsylvania_Turnpike_Information_Page Includes scans of historic maps, guides, and postcards. |
| Ray\'s_Abandoned_Pennsylvania_Turnpike_Website Contains photographs and information about the abandoned sections and tunnels near Breezewood. Accepts outside submissions. |
| Welcome_to_Tom\'s_Pennsylvania_Turnpike_Page! Photo log of abandoned sections. |
| Electronic_Toll_Collection_System Metro Road Systems' division. Includes client list. |
| E-Z_Pass Electronic toll collection system that is common in the Northeast U.S., based in New Jersey. |
| 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. |
| 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. |
| 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. |
| Toll_Facilities_in_the_United_States Full and partial lists with details, courtesy the Federal Highway Administration. |
| TollRoadsNews Online private newsletter providing information and commentary. |
| Traffic_Technologies,_Incorporated Consultants for Intelligent Transportation Systems (ITS). Has links to clients. |
| American_Byways_Forum Covers various topics. Upper Ohio River, U.S., focus. |
| Hit_The_Road! Forum divided into many topics. |
| The_I-95_Travel_Forums Covers various topics about the highway in the U.S. and nearby services. |
| Roadgeeks_(Un)Anonymous\'_Journal Weblog predominantly for road trip itineraries. |
| SABRE_Forum_Index The Society for All British Road Enthusiasts' discussion board which also has categories for international discussion. |
| Yahoo!_Groups__seroads_-_Southeast_Roads_and_Transport Covers the area in the United States, from the Mason-Dixon line south to Florida and west to the Mississippi River. |
| Yahoo!_Groups__Transportation Collection of the dozens of related discussion groups. |
| Yahoo!_Groups__Travel Includes a few relevant groups. |
| American_Ski-Bike_Association An informational and educational website covering all aspects of skibiking/skibobbing. |
| Brenter_Original_Snowbike Main information page for Brenter Snowbikes. |
| Canadian_SkiBike_Association Information about skibobs in Canada, mainly from Alberta. |
| Cascade_Powder_Cats Provides SnowCat transportation at Snoqualmie Summit for skiers and snowboarders for a full day of backcounty skiing plus they allow skibobs. |
| Crighton A new skibike from Crighton, will be for sale during the 2004 season |
| Federation_International_of_Skibobs Information on skibobbing from Europe, skibobbing history, and photos, and the race schedule for the upcoming season. |
| Hanson_Ski_Bikes Conversion kit which converts mountain bikes for use on snow. |
| The_Koski_MonoTrac Koski MonoTrac Skibike, full-suspension skibike |
| Nostalgie Here are some pictures taken in 1969 from the Swiss skibob team. |
