Once travel survey data are compiled, they are used to formulate travel-demand models for forecasting future growth and demand for facilities.
“In transportation, there’s one key concept that overrides just about everything in terms of what to build and when to build it, and that is how many people are going to use the facilities,” says TTI Travel Forecasting Program Manager Thomas Williams. “TTI assists TxDOT and MPOs [municipal planning organizations] in developing and maintaining travel models and other programs that forecast traffic for long-range transportation planning.”
Transportation facilities — highways, roads, and bridges — represent significant investments and create the physical backbone of urban areas. That level of investment requires long-term planning, using forecasts 20 to 30 years into the future.
Travel forecasting has also evolved to include other modes of transportation such as transit, bicycles and pedestrians, and focuses more on personal travel behavior and choices. According to Williams, the shift has occurred as researchers are asked to review the efficiency of an existing transportation system, as opposed to the development of an entirely new network of roadways. Read entire article…