It might impale the engine, which is designed to slide underneath the cabin in case of a frontal collision. I'd say the risk for the occupants should be simila

It might impale the engine, which is designed to slide underneath the cabin in case of a frontal collision. I'd say the risk for the occupants should be similar to hitting a boulder or a tree. It all depends on the speed at impact, but given that these barriers are mainly used in urban areas I don't think they would form much of a risk.