Road Sign Math
- Website that accepts submissions of photographs of sign assemblies whose numbers can be arranged to form a mathematical operation.
- http://www.roadsignmath.com/

The Highway Code
- Official document of the United Kingdom. Includes illustrations and usage of signs and signals.
- http://www.direct.gov.uk/en/TravelAndTransport/Highwaycode/

Sign Language
- Many humorous road signs, with commentary by the website maintainer.
- http://www.signslanguage.com/

Arts and Environment Initiative
- Part of the Center for Economic and Environmental Development at Allegheny College in Pennsylvania. Page shows recent projects including two involving the sculpting of road signs into art ("Read Between the Signs" and "Signs and Flowers&qu
- http://ceed.allegheny.edu/A&EI/home.html

Japanese Traffic Signs
- Three pages of Japanese signs with English descriptions.
- http://www.police.pref.shizuoka.jp/e-html/yobu-1-h.htm

Road Geek Stuff
- Includes a graphics gallery of U.S. state route markers as displayed on guide signs, and personal marker cosmetic change proposals.
- http://www.mylandofmisery.com/roads.htm

This Flashing Green Arrow Plan (TFGAP)
- A private citizen's proposals for new and altered signalization.
- http://home.comcast.net/~tamivox/dave/traffic/about/

The Cone Epicentre
- Includes information and photographss about traffic cones and other related subjects.
- http://cones.epicentre.net/

Traffic Signs, Markings and Signals
- Illustrations of official traffic control devices in Taiwan.
- http://www.freeway.gov.tw/en_07.asp

Road Sign Images
- Various graphic files of U.S. examples, some fictional.
- http://www.rxrsignals.net/Signs/

Road Signs
- Illustrations from 1961 from Scandinavia.
- http://mryamamoto.topcities.com/pdfs/sweden1961.pdf

German Traffic Signs, Signals, and Markings
- Illustrations and detailed commentary.
- http://gettingaroundgermany.home.att.net/zeichen.htm

National Committee on Uniform Traffic Control Devices
- U.S. organization which helps develop standards which are often applied to the Manual on Uniform Traffic Control Devices. Site includes history, member information, and meeting information.
- http://www.ncutcd.org/

MUTCD History
- Page by the Texas Transportation Institute illustrating the changes between each edition of the U.S. Manual on Uniform Traffic Control Devices. Also includes related articles.
- http://tcd.tamu.edu/documents/MUTCD_History.htm

Road Signs of DPRK
- North Korean road signs.
- http://www1.korea-np.co.jp/pk/106th_issue/99080401.htm

Italian & International Road Signs
- Images of Italian signs with english descriptions.
- http://www.nsa.naples.navy.mil/gaetaffsc/Italian%20and%20International%20Road%20Signs.htm

The Traffic Signal Museum
- Illustrates a private collection of signals, including pedestrian.
- http://home.comcast.net/~jab8356/

From War to Worboys
- Chronicles the history and evolution of signs in the United Kingdom.
- http://www.cbrd.co.uk/histories/wartoworboys/

Road Signs and History
- Collection of news, webmaster's thoughts, and photographs.
- http://www.myroadsign.com/

Old California Traffic Signs
- Photos of signs from the early 20th century.
- http://www.caltrafficsigns.com/

Signalfan.com
- Photos of an extensive collection of signals and signs, many vintage, plus a gallery of photos covering many geographic areas.
- http://signalfan.freeservers.com/

The Traffic Signs Regulations and General Directions 2002
- The standard for signs, signals, and pavement markings in the United Kingdom. Includes graphics.
- http://www.opsi.gov.uk/si/si2002/20023113.htm

Manual of Traffic Signs
- A comprehensive listing of those most commonly used in the United States.
- http://www.trafficsign.us/

Traffic Control Devices
- Texas Transportation Institute page. Includes historical and research documents.
- http://tcd.tamu.edu/

Motorway Signs
- Photos of approach, advance direction, exit, reassurance, and overhead signs on motorways in various countries.
- http://pino.faithweb.com/signs/

MiniTraff
- Unofficial traffic signal simulator available for download. Uses Java.
- http://minitraff.sourceforge.net/

The National Campaign to Stop Red Light Running
- Advocacy group based in Washington, D.C., U.S. Site includes news, events, articles, and links.
- http://www.stopredlightrunning.com/

Signs on Nova Scotia Roads and Highways
- Describes the unique attraction signage on freeways of this Canadian province. Official page of the provincial Department of Transportation and Public Works.
- http://www.gov.ns.ca/tran/highwayops/sign.asp

Diamond Signs
- Photograph collection of warning signs.
- http://www-cs-faculty.stanford.edu/~knuth/diamondsigns/diam.html

Western New York Signals
- Photograph collection. Also covers the Central and Capital/Adirondack regions of the state.
- http://wny-signals.tripod.com/

Evaluation of Traffic Signal Displays for Protected/Permitted Left-Turn Control
- Research project studying controls for this movement, addressing such principles as the "left-turn trap". Includes animated graphic examples.
- http://projects.kittelson.com/pplt/

Ramp Meters
- Contains a list of all cities that use ramp metering systems.
- http://www.ajfroggie.com/roads/rampmeter.htm

Watson Lake Sign Post Forest
- Gives the background on this feature in the Yukon Territory of Canada consisting of thousands of donated road signs.
- http://www.yukoninfo.com/watson/signpostforest.htm

Sign Post Forest in Germany
- Tourist attraction composed of donated road signs. Site includes visiting information.
- http://www.fernweh-park.de/

Interstate Highway Control Cities
- Covers all 2-digit and major 3-digit U.S. Interstates and gives some explanation as to their selection. Transcription of an AASHTO document.
- http://users.adelphia.net/~pwolf/controlcities.html

Men at Work
- Dozens of variations on the "Men at Work" theme.
- http://user.cs.tu-berlin.de/~sepp/baustelle/baustelle.html

Road Signs in Italy
- Images and descriptions of most Italian signs.
- http://www.alltravelitaly.com/Italy/Car_Rental/Road_Signs.htm

Traffic Signs in Lebanon
- Images of most Lebanese signs.
- http://www.lebanon.com/isf/traffic/

New Zealand Road Signs
- Images of common road signs.
- http://www.akldnz.co.nz/roadsign.htm

Traffic Signs in Seoul Korea
- A few good pictures of Korean signs and signals.
- http://langintro.com/seoul/catalog/tpc48_01.htm

Chinese Traffic Signs
- Some images of Chinese signs, but the text is in Chinese.
- http://www.dlutc.gov.cn/word/sign/1.htm

Signspotters
- Extensive photo collection of examples in Australia.
- http://www.hobbiesplus.com.au/signspotters/