Trailers are manufactured as single and double axle and used for transporting of agricultural products and other purposes.Trailers aren't self powered. Speed of trailer is limited according to country laws. Trailers are divided into two groups as general purpose trailers and special purpose trailers. General purpose trailers are more economic for the small agribusiness. General purpose trailers are also suitable in big agribusiness but special purpose trailers are very advantageous for big agribusiness