In 1956 the drivers' association was formed. In 1957, thanks to the efforts of Peter Arnold, a national numbering system was introduced, BriSCA, the association of promoters was formed and the Stock Car Racing Board of Control created. There was also an agreement that BriSCA would only use drivers of the drivers' association. From the initial explosion in 1954 things started to settle down, tracks opened and closed but racing rules were introduced and the cars became more refined, while star drivers started to emerge. BriSCA has raced continuously since 1954 and held over 5,500 meetings across the United Kingdom.