Optimally designed for the PC. Designed to work with Windows for ease of use through its graphical interface. Can route around mountains, lakes and other "barriers" and avoid poor roadways. Can be used equally-well in congested cities and the outlying countryside -- can easily be implemented in any geography, worldwide. Uses extremely efficient routing algorithms to evaluate loading permutations to find the best loading configuration. Finds the most "efficient" route for quickest delivery and best customer service. Customizable by defining the importance of efficient routing, optimal trailer utilization and customer service and by dynamically defining the meaning of a "good" route.