When loading a tank, you should:

Proper loading leaves the required outage and stays within legal weight limits. Loading procedure: position the truck on level ground; bond and ground the tank (for flammable liquids); connect the loading arm; calculate the safe load weight (tank capacity ÷ liquid density, ensuring axle weights stay legal); leave required outage; close all valves and inspect for leaks before driving. Some tanks have visual indicators or sensors to show when the proper level is reached; others rely on the shipper's loading operator to stop at the right point. The driver remains responsible for accurate loading even if a shipper's employee does the work. Overloading violates weight laws and creates the dangerous pressure conditions outage is designed to prevent.