The bill amends Chapter 45-53 of the General Laws by adding a new section titled "Johnston emergency moratorium." This provision authorizes the town of Johnston to enact an emergency moratorium on accepting or processing applications for comprehensive permit projects if there are 250 or more units proposed. During this moratorium, any applications submitted will not have grandfathered status, meaning they will not be exempt from the restrictions imposed by the moratorium. The town of Johnston may maintain this moratorium until the comprehensive permit requirements in section 45-53-4 are amended. The act is set to take effect immediately upon passage.