 The current set of designs were introduced through a reform that went into effect 1 June 2006, replacing the old set from 1967.As the law outlining this reform was published 7 October 2005, some signs were already replaced before the law went into effect.The most notable change was the removal of hats and hair on the stickmen making them gender-neutral, but many signs were redesigned or introduced for the first time, as noted below.