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Safety issues and current transport (shipment and b-vehicle use) and environmental regulations applicable to sodium-sulfur batteries for electric vehicles are summarized, and an assessment technique is suggested for evaluating potential hazards relative to commonly accepted risks. It is found that shipment regulations do not directly apply to sodium-sulfur batteries. Disposal hazards need to be quantified and decommissioning procedures need to be developed to comply with the environmental regulations. The risk assessment could be used to help commercialize sodium-sulfur and other advanced batteries in electric vehicles.