This Book serves as a useful knowledge in the field of Agricultural Technology and Engineering. Software is developed in Visual Basic for the evaluation of the haulage performance of the power tiller. The relationships between the input parameters and other operating parameters were established with the help of some mathematical relations. The established relations were used to calculate the different outputs parameters. The developed software calculates the various parameters which would help the user in performing transportation operation under various conditions. An interactive object-oriented window based simulation program was developed for both educational and research needs. The program provides intuitive graphical user interfaces by linking databases such as power tiller specification, trailer specification and operating conditions etc., to predict the haulage performance of a selected power tiller-trailer system.