The algorithm for calculating the shortest route for three vehicles with the limitation of their capacity and number of places per one vehicle using Microsoft Office Excel with the addition of OpenSolver 2.9.0 is presented. The algorithm was designed mainly for small transport companies whose number is several dozen times bigger than large companies. The evolutionary method was used, which belongs to the group of exact methods that guarantee calculation of the shortest possible route. Improving the work organization of transport means that can be achieved by using the presented computerized transport management system will result in reduction of carbon dioxide emissions and measurable savings as a result of reducing the distances necessary to overcome. Presented algorithm provides a step-by-step procedure with snapshots for improved performance. Visualization of the route allows for transparent display of the data developed.