Phil Koopman is a professor at Carnegie Mellon University who studies driverless vehicle safety.

菲尔·库普曼是卡内基梅隆大学教授，研究无人驾驶车辆安全性。

Koopman said the trucks' actual performance will depend on the quality of their safety engineering.

库普曼表示，卡车的实际性能将取决于其安全工程的质量。

With billions of dollars in investments, Koopman said he wonders how autonomous transportation companies will balance safety decisions against cost concerns.

库普曼说，凭借数十亿美元的投资，他想知道自动驾驶交通公司将如何平衡安全决策和成本问题。