电动、燃料电池和混合动力车辆可以包含许多类型的高压系统。乘员和高压系统之间的足够的屏障是必要的，以提供免受高压系统内可能在碰撞期间和之后对车辆乘员造成伤害的潜在有害电流和材料的保护。本SAE推荐实践适用于由至少一个标称工作电压大于60且小于1,500 VDC，或大于30且小于1,000 VAC的车辆推进电压总线组成的电动、燃料电池和混合动力车辆设计。该推荐实践涉及碰撞后的电气安全、电力推进部件的保留和电解质溢出。

Electric, Fuel Cell and Hybrid vehicles may contain many types of high voltage systems. Adequate barriers between occupants and the high voltage systems are necessary to provide protection from potentially harmful electric current and materials within the high voltage system that can cause injury to occupants of the vehicle during and after a crash. This SAE Recommended Practice is applicable to Electric, Fuel Cell and Hybrid vehicle designs that are comprised of at least one vehicle propulsion voltage bus with a nominal operating voltage greater than 60 and less than 1,500 VDC, or greater than 30 and less than 1,000 VAC. This Recommended Practice addresses post-crash electrical safety, retention of electrical propulsion components and electrolyte spillage.