Freight, or freight traffic in the logistic Industry is used to refer to the rate of movement of cargo at international terminals.
Freight refers not just to transportation by trucking, but also includes travel by rail and sea. Traffic in this industry is usually measured in tonnes-kilometers per hour (tph), or lane-kilometers per day (lkm). The most common measurement for time is the number of hours required for one thousand kilometers transit, so one tonne-hour means 1 kg transported 1000km in an 8 hour period after which it sits idle for 4 hours before being loaded onto another vehicle that continues said trip (often multiple times).
Freight is the most important part of logistics industry. It is responsible for carrying goods from one place to another. Without freight, there would be no way to transport items over land, air, sea, or any other means.
Freight has continued to evolve with the times in order to keep up with growing demands around the world. The transportation industry was heavily restructured during World War II when Ford introduced their 1944 Ford Truck that was capable of tractor-trailer combination service while diesel engines became more widely adopted by truckers following WWII due to an increased demand for trucks and drivers post-war period.