Abstract
It is a popular definition that the sum of non use values which are evaluated by a stated preference method, and use values which are evaluated by a revealed preference method define as the total value of an environmental quality. However, there are some problems when we use this definition. A main problem is that it is ambiguous the sum of values is exactly equal to the total value because there are possibility that a non use value, which is evaluated by a stated preference method, includes a use value because of biases in a stated preference method. Thus, sometimes the sum is over the exact value.
The purpose of this study is to construct a method of combining revealed and stated preference method under the multiple destination trips. The first argument is to define the mathematical formulation of benefits under the multiple destination trips. The second argument is to consider the estimation method.
