 While the main focus of PIAXP is fuel economy and carbon emissions, not safety, the vehicles must be "production capable".Therefore, the entries must either be fully compliant with the Federal Motor Vehicle Safety Standards (FMVSS) and other applicable National Highway Traffic Safety Administration (NHTSA) requirements or compliance has to be "designed in".For example, allowance for airbags in the designs is considered acceptable without actually installing the airbags.