摘要
This study contributes new insights in the debate over the viability of high-speed rail(HSR)in the United States and the value proposition for government investment.The modeling focus of this study is two-fold,and the modeling approach makes a case for a fundamental shift from the current perspective of HSR viability.First,the user and community impact assessment of HSR is conducted in the same manner as traditional transportation system evaluation(i.e.,vehicle operating costs(VOC),travel time,safety,emissions,and energy consumption)to provide comparable conclusions regarding intercity transportation alternatives.Second,the model presented in this study analyzes both ridership and impacts within the same systematic framework to assess the long-term impacts on the individual transportation modes,total system metrics,and efficacy of alternate policies.Using this model,decision-makers can introduce various externalities to determine both the ideal and problematic conditions for the viability of a new HSR system.