TMD recently updated its spreadsheet-based model analyzing and predicting operator requirements and costs, including both wages and fringe benefits by operating division. The update allows the model to directly extract HASTUS™ scheduling requirements (runs) as well as current wage rates (straight time and overtime) and attendance in order to predict the best balance of work force and overtime. GCRTA had continued to use TMD’s original operator optimization model for nearly 20 years before requesting the model update to reflect new technology and data at GCRTD.