This legislation mandates the Secretary of Transportation to establish new regulations within one year of its enactment. These regulations will require safety placards, specifically those covered under 49 CFR 172.519 for hazardous materials, to be capable of withstanding temperatures in excess of 180 degrees Fahrenheit . The primary purpose of this requirement is to improve the integrity and durability of these critical safety indicators, especially in the event of railcar accidents involving heat. This measure aims to ensure that vital hazard information remains visible for emergency responders. Furthermore, the bill grants the Secretary the authority to update and increase this specified heat threshold for placards, should the National Transportation Safety Board provide relevant recommendations.