One of the most important issues that should be paid special attention to transportation of various types of cargo is choosing a truck proportional to the type of load. Choosing the right means and type of transportation helps to reduce the cost of payment, ease and security of cargo.
Types of trucks based on axle and weight are:

Truck (Khavar)
This truck with a dimension slightly larger than pickup truck and with two axles and 6 wheels, has the ability to load up to 3 tons. The traffic of these trucks is free at all hours of the day and is also the best option for carrying home appliances and offices and sensitive items.

Single Trucks (10 Tons or 6 Wheel Trucks)
These trucks have no roof and the ability to carry up to 10 tons of cargo such as iron, building materials, fruits, etc. S . The length of the single truck room is between 5.7 and 6 meters.

Coupling (10 three-axle wheels)
If the weight of the cargo is greater than the capacity of the single truck, this truck is used. These trucks can usually carry up to 15 tons of cargo.

The trailer has two parts (head or puller and freight) that the shafts of the head are separate from the axles of the truck. The maximum cargo normally transported by a truck is about 22 tons, but they can carry up to 25 tons.
Trailers based on the type of freight trucks in different types including 18 wheel trailers, insoles, back-breakers, edge trucks, transit, etc. They are divided.

Eighteen wheels
of the trailer loading section are attached to the head with a joint, this category of trucks are used for bulky and heavy loads as well as for dump and insoles.

Loading truck is a truck with a load of pallets, stones, heavy vehicles, traffic loads and so on. is used.

Shock Absorber
is one of the most powerful types of trailers that is used in heavy loads and road construction machinery due to its special condition.

A refrigerated
truck is a covered truck with cooling equipment and generators in its load.

A truck with the maximum height of the resistant wall of the load room is 80 centimeters.

Transit or tented
trailer since the cargo part of this truck is covered by tarpaulin fabric and is able to be sealed it is used for customs and export cargo and heavy loads.

A bladed
truck is a truck whose cargo is divided into two equal halves by a longitudinal blade.

A tanker truck is a truck whose cargo part is closed as a reservoir and
is used to carry a variety of liquids.

A tractor
is a vehicle that carries a spare or semi-trailer and is used to carry containers, tankers, containers, etc.

A bogey-trailer is
a type of trailer with axles proportional to the load and is used to carry very heavy loads to reduce load pressure on road, rail and also vehicles.