The world depends on four major forms of transportation; air, water, road and railroad, each with its advantages and disadvantages. On the roads where most of transportation over shorter distances takes place, trucks are the most used mode of transporting cargo and other related goods. Trucks are preferred over trains that can carry similar cargo as they are more flexible and do not rely on railroad timetable. The general freight carriers normally offer two major services, being the Less Than Truckload (LTL carrier) and Full Truckload (FTL).