Mayor Bill de Blasio announced the decision by the New York City Board of Correction on Tuesday New disciplinary model will allow city 'to go further than any major jail system in the country in banning solitary confinement,' a statement read The Risk Management Accountability System is expected to begin this fall Move follows state-wide reforms signed into law to limit confinement to 15 days Advocates have criticized the new system, saying it is a 'rebranding' of existing measures that does not go far enough to eliminating solitary confinement