Application of cost benefit analysis has been increasingly commonplace in appraisal of public works projects. However,evaluation of non-market values is in part left behind due to the difficulties in its measurement. Contingent valuation method is expected to play a role in non-market value assessment despite its inherent problems. This paper introduces a study on an impact of elevated motorways on landscape as an example of CVM application. The result of the surveys is analysed to discuss the applicability of the method to subjects with different levels/types of utility change brought to respondents.

Energy efficiency of transportation is in great concern from the viewpoint of environment since energy consumption of transportation is a significant part of carbon dioxide generation. Developement of new technologies to reduce the energy consumption must be accelerated according to suitable prospects and policies. The energy efficiency of tranportation depends on the imbalance between the travel demand and supply, and its technical features is not clearly represented by the macroscopic statistics. This technical report examines the efficiencies in vehicle dynamics and power supply systems. These examination suggested the possibilities andlimits of new technologies applicable to transportationsystems, such as electric vehicle and regenerative brakng. It was also revealed that rail systems were much advatageous than road vehicles of personal use, and, the used of rubber-tired train provided high efficiencies in some cases with short distance operations.

This report aims to introduce a report "Cost-Effectiveness Analysis Manual for Airport Investment", and to discuss some points in dispute at the Committee for the manual. Estimation method of induced transport demand, impact of aircraft's capacity restriction, effectiveness of competition among carriers, estimation of time value, definition of supplier etc. are discussed at the Committee.