Abstract: A system is provided for guiding a driver of a tractor trailer truck entering a loading bay for proper alignment of the loading hatch in the top of a transport tank carried on the trailer. The system includes a display screen disposed on the driver side of the loading bay and angled toward the loading bay so as to remain in continuous uninterrupted view of the driver as the truck is entering the loading bay. A front sensor is disposed to a first side of the loading bay, and a rear sensor spaced apart from the front sensor is disposed along the same side of the loading bay. A controller is connected electrically to the front sensor, the rear sensor, and the display screen. A camera has a field of view aimed between the front sensor and the rear sensor where the loading hatch of the transport tank will be disposed when the transport tank is properly aligned in the loading bay for taking on cargo.