There are many constraints for travel demand modeling in developing countries due to the limitations of appropriate data. The main reasons are the lack of secondary data for forecasting the calibrated models, incompatibilities of even the available data sources for use as secondary data, lack of accuracy of such data sources, etc. Therefore, a need exists to find accurate, flexible and compatible data source for use as secondary data for forecasting the travel demand models. Also, such data should be easy to collect at ground level for calibrating the travel demand models.