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UN/LOCODE, the United Nations Code for Trade and Transport Locations, is a geographic coding scheme developed and maintained by United Nations Economic Commission for Europe (UNECE), a unit of the United Nations. A Geocode ( G eospatial E ntity O bject Code) is representation format of a geospatial coordinate measurement used to provide a standard representation The United Nations Economic Commission for Europe (UNECE or ECE was established in 1947 to encourage economic cooperation among its member States The United Nations ( UN) is an International organization whose stated aims are to facilitate cooperation in International law, International security UN/LOCODE assigns codes to locations used in trade and transport with functions such as seaports, rail and road terminals, airports, post offices and border crossing points. Trade is the willing exchange of goods, services, or both Trade is also called Commerce. Transport or transportation is the movement of people and goods from one place to another ||-||-|-||-||-||-||-||-||-|} A port is a facility for receiving Ships and transferring cargo "Railroad" and "Railway" both redirect here For other uses see Railroad (disambiguation. A road is an identifiable route, way or path between two or more places. An airport is a location where Aircraft such as airplanes, Helicopters and blimps take off and land A post office is a facility authorized by a Postal system for the posting receipt sorting handling transmission or delivery of Mail. It has been suggested to create a new article named Checkpoint (security and that this article should be a sub-article to the new article The first issue in 1981 contained codes for 8,000 locations. Twenty-seven years later, Issue 2007, released in 2008, contained 58,875 locations. [1]

UN/LOCODEs have five characters. The first two are letters, and come from the ISO 3166-1 alpha-2 country codes. ISO 3166-1 alpha-2 codes are two-letter Country codes in the ISO 3166-1 standard to represent countries and dependent territories. Country codes are short alphabetic or numeric geographical Codes ( Geocodes developed to represent countries and dependent areas for use in data processing Normally three letters will follow, but if there are not enough combinations, numbers from 2 to 9 can also be used. In combinatorial mathematics, a combination is an un-ordered collection of distinct elements usually of a prescribed size and taken from a given set A number is an Abstract object, tokens of which are Symbols used in Counting and measuring. For the US the 17575 possible permutations of 3-character codes have been almost exhausted in 2006 the secretariat for the first time introduced 646 entries to the 2006-2 issue of UN/LOCODE where the third position of 3-character codes is represented by a numerical digit 2 to 9. In several fields of Mathematics the term permutation is used with different but closely related meanings The 2007 issue of UN/LOCODE contains 689 such US entries.

For each country there can be a maximum of 35*35*35 = 42 875 entries.

For airports, the three letters following the country code are not always identical to the IATA airport code. Country codes are short alphabetic or numeric geographical Codes ( Geocodes developed to represent countries and dependent areas for use in data processing An IATA airport code, also known an IATA location identifier, IATA station code or simply a location identifier, is a three-letter code designating many According to the secretariat note for Issue 2006-2, there are 720 locations showing a different IATA code. [2]

Beside the abbreviation, UN/LOCODE also defines a spelling for each location that can be written without special characters. This is achieved by stripping off the diacritics from the (romanized) local name. A diacritic ( also called a diacritic or diacritical mark, point, or sign, is a small sign added to a letter to alter pronunciation In Linguistics, romanization (or latinization, also spelled romanisation or latinisation) is the representation of a Word or [2]

Examples

Examples of locations as shown in Issue 2006-2[3]
Ch LOCODE Name NameWoDiacritics SubDiv Function Status Date IATA Coordinates Remarks
US NYC New York New York NY 12345--- AI 0401 4042N 07400W
DE BER Berlin Berlin BE 12345--- AF 0207 5231N 01323E
DE TXL Berlin-Tegel Apt Berlin-Tegel Apt BE ---4---- AF 9501
FR PAR Paris Paris 75 123-5--- AF 9501
GB PAR Par Par CON 1------- AF 9501
SE GOT Göteborg Goteborg O 1--45--- AI 0207 XWL
= SE Gothenburg = Göteborg Gothenburg = Goteborg
Explanations

Data fields

The fields are listed in the official order.

Ch (Changes)

A change from the previous issue is indicated by one of the following characters in the first column:
+  Additions to the issue
#  Change in location name (usually spelling) Note: Not defined in the manual [1]
|  Change other than location name
X  Entries marked for deletion in the next issue
=  Reference entry
!  US locations with duplicated IATA code, under review

Locode

The code is represented with a space between the country code and the 3-letter element.

Name

The name of the location.

Name Without Diacritics

The name of the location, but all non-latin-base characters are converted.

SubDiv (Subdivision)

The ISO 1 to 3 character alphabetic and/or numeric code for the administrative division (state, province, department, etc. ) of the country, as included in ISO 3166-2/1998. ISO 3166-2 is the second part of the ISO 3166 standard published by the International Organization for Standardization (ISO Only the latter part of the complete ISO 3166-2 code element (after the hyphen) is shown.

Function

Each defined function gets a classifier; the most important are:

Status

Indicates the status of the entry by a 2-character code. The following codes are used at present:
  • AA: Approved by competent national government agency
  • AC: Approved by Customs Authority
  • AF: Approved by national facilitation body
  • AI: Code adopted by international organisation (IATA or ECLAC)
  • AS: Approved by national standardisation body
  • RL: Recognised location - Existence and representation of location name confirmed by check against nominated gazetteer or other reference work
  • RN: Request from credible national sources for locations in their own country
  • RQ: Request under consideration
  • RR: Request rejected
  • QQ: Original entry not verified since date indicated
  • XX: Entry that will be removed from the next issue of UN/LOCODE

Date

The date the location was added or updated: 0207 is July 2002, 9501 is January 1995, etc.

Observation: The edition published in 2008 contains for additions the value 0701, while in other cases the exact month is used like 9710, 0212.

IATA

The IATA code for the location if different from the second part of the UN/LOCODE. An IATA airport code, also known an IATA location identifier, IATA station code or simply a location identifier, is a three-letter code designating many

Coordinates

Some entries have coordinates in the database. They are represented by two numbers the first followed either by N or S the second by E or W.

Remarks

The remarks column can among other things contain a hint to what specifically was changed (See data field - "Change").

Errors

In 2006-07 IQ IRB for Irbil was added while IQ ABL Arbil with almost the same coordinates existed. Arbil (also written Erbil or Irbil; BGN: Arbīl; Kurdish: هه‌ولێر Hewlêr Arbil (also written Erbil or Irbil; BGN: Arbīl; Kurdish: هه‌ولێر Hewlêr In the 2007 edition IQ ABL gets marked for deletion and IQ EBL Erbil International Apt is added to the database, but with a different coordinates, reflecting the distance between airport and city. Erbil International Airport is an Airport located in the north western part of the city of Arbil (also written Erbil or Irbil adjacent to the suburb of The error is to delete ABL and to insert IRB.

Occasionally locations are listed twice, this sometimes may not be real errors. In issue 2006-1, ARSMC San Miguel de Tucuman (functions 2,3) was added while ARTUC Tucuman (function 1) already was in the list. San Miguel de Tucumán (usually referred to as simply Tucumán) is the largest City in northern Argentina, with a population of 525853 per the. The coordinates are with very little deviation the same. Also in 2006-1, ARSSJ San Salvador de Jujuy was added (function 4) while ARJUJ Jujuy (functions 1,2,3,5) already existed. San Salvador de Jujuy is the capital city of Jujuy Province in northwest Argentina.

The 2007 edition contains character encoding errors in the .txt and .csv files. The name for the new code FR ONM Moёlan-sur-Mer does not show the ё correctly. Yo (Ё ё is the seventh letter of the Russian Cyrillic alphabet, invented in 1783 by Yekaterina Dashkova, and first used among others in 1797 by the Russian In the .mdb file it is encoded correctly but the column "NameWoDiacritics" contains the name with diacritics . i. e. "Moёlan-sur-Mer". Users that can not access . mdb files, can not obtain from the website a correct list for their databases.

Another error from 2007 code list:

  DE  GXD Gross-Umstadt Gross-Umstadt HE --3----- RL 0201 4952N 00855E      
+ DE  UMS Gross-Umstadt Gross-Umstadt HE -23----- RL 0701 4952N 00856E

US TRI + US BOS, same coor and within TRI different coor


US BFS Bristol                            VA RL -234---- 0212 3636N 08211W cf US JCI, US BSO, US TRI
US BSO Bristol Apt                        TN RL -234---- 0212 3635N 08210W cf US JCI Apt, US BSO Apt, US TRI Apt        
US TRI Bristol-Johnson City-Kingsport Apt TN RL -234---- 0212 3635N 08210W cf US JCI, US BSO, US TRI
US TRI Johnson City-Kingsport-Bristol Apt TN RL -234---- 0212 3635N 08210W cf US JCI, US TRI, US BSO
US TRI Kingsport-Bristol-Johnson City Apt TN RL -234---- 0212 3635N 08210W cf US JCI, US TRI, US BSO
US TRI Kingsport Apt                      TN AI ---4---- 0212 3632N 08233W cf US BSO Apt, US JCI Apt


Problems

Some entries do not have coordinates so it is not clear where actually they refer too. If an IATA code changes, then also the UN/LOCODE could be regarded as changed. 

MS MNI Montserrat Montserrat AI ---4---- 9601

For Kochi / Cochin the postal function has KOC (1998) and all other functions have COK (2003). Gerald's Airport is a small international Airport located on the island of Montserrat, a British Overseas Territory in the Caribbean. The International Civil Aviation Organization ( ICAO) an agency of the United Nations, codifies the principles and techniques of international air navigation WH Bramble Airport, also known as Blackburne Airport, was a small international Airport on the east coast of the island of Montserrat, a British 

IN KOC Kochi  Kochi     AI ----5--- 9805
IN COK Cochin Cochin KL AA 1234-6-- 0307 0958N 07614E

Issue history

Issue Date[4] Entries Changes Notes
# | + X Total
2007[5] 2008-03-25 58,875 153 753 4,327 24 5,257
2006-2[6] 2007-04-30 54,705 15 79 6,400 157 6,651
2006-1[7] 2006-06-09 48,553 43 42 3,110 11 3,206
2005-2[8] 2005 50,000 55 178 929 8 1,170 Based on 2006-1, entries should be 45,451
2005-1[9] 2005-02-28 50,000 46 196 2,291 16 2,549 Based on 2006-1, entries should be 44,538
2004-2[10] 2004-07-27 50,000 26 87 1,707 5 1,825 Based on 2006-1, entries should be 42,252
2004-1[11] 2004-02-18 47,725 208 694 1,958 167 3,027 Based on 2006-1, entries should be 40,712
2003-2[12] 2003 40,000 283 1,099 2,402 324 4,108 Based on 2006-1, entries should be 39,078
2003-1[13] 2003 38,000 2,779 523 707 2 3,911 Based on 2006-1, entries should be 36,678
2002-2[14] 2002 36,005 93 252 1,235 6 1,586 Based on 2006-1, entries should be 35,977
2002-1[15] 2002 35,460 100 597 2,503 24 3,224 Based on 2006-1, entries should be 34,766
Notes
#  Change in location (spelling or other)
|  Other changes
+  Additions to the issue
X  Entries marked for deletion in the next issue

See also

References

  1. ^ UN/LOCODE (United Nations Code for Trade and Transport Locations), Issue 2007 (2008-03-??). The complete list is too large for one article This article is a navigation aid to access the lists that contain the data For other uses see IATA (disambiguation. This is a List of IATA-indexed train stations organized by the IATA airport code.
  2. ^ a b Secretariat Note to the users of UN/LOCODE 2006-2. United Nations Economic Commission for Europe (2007-04-30). Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 313 - Roman emperor Licinius unifies the entire Eastern Roman Empire under his rule
  3. ^ UN/LOCODE (United Nations Code for Trade and Transport Locations), Issue 2006-2 (2007-04-30).
  4. ^ News Archives (2004-2007). UN/CEFACT, United Nations Economic Commission for Europe. The United Nations Centre for Trade Facilitation and Electronic Business, ( UN/CEFACT) has a mission to improve the ability of business trade and administrative organizations
  5. ^ Secretariat Note to the users of UN/LOCODE 2007. United Nations Economic Commission for Europe.
  6. ^ Secretariat Note to the users of UN/LOCODE 2006-2. United Nations Economic Commission for Europe (2007-04-30). Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 313 - Roman emperor Licinius unifies the entire Eastern Roman Empire under his rule
  7. ^ Secretariat Note to the users of UN/LOCODE 2006-1. United Nations Economic Commission for Europe (2006-06-09). Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 53 - Roman Emperor Nero marries Claudia Octavia 62 - Claudia Octavia commits
  8. ^ Secretariat Note to the users of UN/LOCODE 2005-2. United Nations Economic Commission for Europe.
  9. ^ Secretariat Note to the users of UN/LOCODE 2005-1. United Nations Economic Commission for Europe (2005-02-28). Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. Events 202 BC - coronation ceremony of Liu Bang as Emperor Gaozu of Han takes place initiating four centuries of the Han Dynasty 's rule
  10. ^ Secretariat Note to the users of UN/LOCODE 2004-2. United Nations Economic Commission for Europe (2004-07-27). "MMIV" redirects here For the Modest Mouse album see " Baron von Bullshit Rides Again " Events 1214 - Battle of Bouvines: In France, Philip II of France defeats John of England.
  11. ^ Secretariat Note to the users of UN/LOCODE 2004-1. United Nations Economic Commission for Europe (2004-02-18). "MMIV" redirects here For the Modest Mouse album see " Baron von Bullshit Rides Again " Events 3102 BC - Epoch (origin of the Kali Yuga. 1229 - The Sixth Crusade: Frederick II Holy
  12. ^ Secretariat Note to the users of UN/LOCODE 2003-2. United Nations Economic Commission for Europe.
  13. ^ Secretariat Note to the users of UN/LOCODE 2003-1. United Nations Economic Commission for Europe.
  14. ^ Secretariat Note to the users of UN/LOCODE 2002-2. United Nations Economic Commission for Europe.
  15. ^ Secretariat Note to the users of UN/LOCODE 2002-1. United Nations Economic Commission for Europe.

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