Compliance is non-negotiable for emergency vehicles. The product must meet EN 1789 standards (for ambulances in Europe) or KKK-A-1822F standards (US federal specifications), which dictate crash test requirements and interior safety. For the medical cabin, ensure all materials are antibacterial, easy to disinfect, and flame-retardant. From an automotive perspective, the manufacturer should hold ISO 9001 and ISO 13485 (Medical Devices) certifications, and the vehicle itself must have CE, WVTA, or GCC certification depending on your target market.