A crash barrier device including: a body portion having at least an impact portion; and a fastening portion configured to fasten the body portion to a projecting load being carried by a vehicle; wherein the impact portion and fastening portion are configured such that the impact portion is nearer to a surface traveled on by the vehicle than the fastening portion. A system for carrying projecting loads is also provided and includes: a trailer having wheels and fastener(s) for fastening the trailer to a powered vehicle; and the crash barrier device.