Question: The Japanese Touring Car Championship, was a former touring car racing series held in Japan, the series was held under various regulations during its existence, including international categories such as Group A, was a set of motorsport regulations introduced by which organization, covering production-derived vehicles intended for outright competition in Touring car racing and Rallying?

Context articles: 1985 Australian Touring Car season
1986 Australian Touring Car season
Colin Turkington
Scandinavian Touring Car Championship
British Touring Car Championship
Swedish Touring Car Championship
Renault Clio Cup United Kingdom
Group A
Japanese Touring Car Championship
Danish Touringcar Championship

The 1985 Australian Touring Car season was the 26th season of touring car racing in Australia commencing from 1960 when the first Australian Touring Car Championship and the first Armstrong 500 (the forerunner of the present day Bathurst 1000) were contested.
 It was the first season in which Australian Touring Car regulations were based on those for the FIA Group A Touring Car category.
The 1986 Australian Touring Car season was the 27th season of touring car racing in Australia commencing from 1960 when the first Australian Touring Car Championship and the first Armstrong 500 (the forerunner of the present day Bathurst 1000) were contested.
 It was the second season in which Australian Touring Car regulations were based on those for the FIA Group A Touring Car category.
Colin Henry Turkington (born 21 March 1982) is a Northern Irish auto racing driver, who is currently competing in the British Touring Car Championship for Team BMW WSR in a BMW 125i M Sport .
 His most notable successes to date include becoming 2009 British Touring Car Champion driving for Team RAC and 2014 British Touring Car Champion driving for eBay Motors.
 He has also competed in the World Touring Car Championship and the inaugural Scandinavian Touring Car Championship.
 In 2013 he returned to the British Touring Car Championship with his current team, West Surrey Racing.
The Scandinavian Touring Car Championship (STCC) is a touring car racing series based in Scandinavia.
 The series took over from the Danish Touringcar Championship and Swedish Touring Car Championship, with its first season in 2011.
 The Scandinavian Touring Car Cup was awarded in 2010 to the driver with best results from selected races in the Danish and Swedish seasons.
The British Touring Car Championship is a touring car racing series held each year in the United Kingdom, currently organised and administered by TOCA.
 It was established in 1958 as the British Saloon Car Championship and was renamed as the British Touring Car Championship in 1987.
 The championship has been run to various national and international regulations over the years including FIA Group 2, FIA Group 5, FIA Group 1, FIA Group A, FIA Super Touring and FIA Super 2000.
 A lower-key Group N series for production cars ran from 2000 until 2003.
Swedish Touring Car Championship (STCC) was a touring car racing series based in Sweden, but also with rounds in Norway.
 They began operating in 1996, heavily influenced by the British Touring Car Championship and the success of BTCC racing on Swedish television.
 There are also a number of support classes that compete with their races alongside STCC; Radical, the Camaro Cup, Superkart, Pro Superbike, the JTCC and the Porsche Carrera Cup Scandinavia.
 The final STCC season was in 2010, as the series merged with the Danish Touringcar Championship to form the Scandinavian Touring Car Championship.
The Renault Clio Cup United Kingdom is an entry level One-make, Touring car racing motor sport category and the current name in the long history of Renault one-make cups in the UK.
 It currently attracts drivers from across the United Kingdom to compete along with several drivers for European countries.
 The championship has been run to various regulations over the years, and can trace its history back to 1974.
 Several former drivers have become successful in other Touring car racing formulae, including Andy Priaulx, who went on to become multiple World Touring Car Championship champion and Jason Plato who is multiple British Touring Car Championship champion.
 The championship currently runs on the support package of the British Touring Car Championship.
 The current series promoter is the British Automobile Racing Club, after previously being the promoter from 1974 to 2011.
 Prior to this, SRO promoted the series in 2012.
Group A was a set of motorsport regulations introduced by FIA covering production-derived vehicles intended for outright competition in Touring car racing and Rallying.
 In contrast to the short-lived Group B and Group C, the Group A referred to production-derived vehicles limited in terms of power, weight, allowed technology and overall cost.
 Group A was aimed at ensuring a large number of privately owned entries in races.
The Japanese Touring Car Championship "(abbr: 1985-1993: JTC, 1994-1998: JTCC, officially known as All Japan Touring Car Championship, Japanese name: 全日本ツーリングカー選手権)", was a former touring car racing series held in Japan.
 The series was held under various regulations during its existence, including international categories such as Group A and Super Touring, which allowed both Japanese and foreign built cars to compete.
 The final edition of the championship was held in 1998, although a failed attempt at a relaunch was planned for 2012.
The Danish Touringcar Championship (abbreviated as the DTC) was a touring car racing series in Denmark.
 The inaugural year for the DTC was 1999, after the huge success in Scandinavia of the British Touring Car Championship.
 For the first two years it was known as the Danish Touring Car Challenge.
 The final DTC season was in 2010, as the series merged with the Swedish Touring Car Championship to form the Scandinavian Touring Car Championship.