Video: Autonomous truck will protect construction workers

A driverless truck unveiled by Royal Truck and Equipment is meant to enhance safety at highway construction sites. The truck, complete with a crash barrier — or attenuator — mounted on its front, is designed to follow construction vehicles and absorb energy from vehicles that might crash into it, thus protecting the workers in front. Attenuators can cut work-zone injuries and deaths caused by rear-end crashes nearly in half, according to a Journal of the Transportation Research Board study.