The increasing importance of improving the efficiency of transportation facilities has resulted in a need for a systematic economic model to evaluate High Occupancy Vehicle (HOV) projects. These projects encourage higher vehicle occupancy rates by restricting the use of some portion of the facility to some vehicle types or minimum number of occupants. The feasibility is examined of using the Texas Highway Economic Evaluation Model (HEEM) to evaluate HOV projects. Three major deficiencies are examined: limited variety of highway types, assumptions in the model, and method of allocating corridor traffic to specific routes within the corridor. Additional highway types are recommended to evaluate HOV projects, along with parameter specifications for those highway types. Changes in the assumptions of the model include percent trucks, the occupancy rates, value of time, and future vehicle demand. The allocation of corridor traffic is an important aspect of evaluating HOV projects as well as other types of highway projects. An alternative allocation method is presented which is based upon minimized total user costs. This method results in corridor allocation such that the marginal user costs for each route in the corridor are equal. User cost functions are derived, based upon the user cost calculations in the HEEM, which can be used to allocate corridor traffic for any number of routes within the corridor. Recommended programming changes to the HEEM are presented to implement HOV analyses. This includes the marginal cost allocation method, and recommended values for the assumptions in the model as they relate to HOV projects. (ERA citation 07:061715)
Evaluation of High-Occupancy-Vehicle Projects in the HEEM
1982
95 pages
Report
Keine Angabe
Englisch
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