We have 2 new high cube vans at our location that measure 13'6" exactly with 22.5 tires and over 13'6" with 24.5 tires. We have 8 tractors with 24.5 tractors in use daily . There is NO WARNING sign as posted on pups! We have had no warning from supervision that this exist and the potential hazard . These trailers all have drivers side gear and glad hands. No safe stack or securing hooks. Please use caution when hooking to these and measure your overall height if unsure. " SAFETY FIRST "