Contribution Rate of Highway Passenger Transportation Price to Consumer Price Index

Due to the alternate inflation and deflation pressure caused by the fluctuation of consumer price index,it has imposed more difficulty in the control of macro economy.Highway passenger transportation price is one of the basic indexes in determining the consumer price index,and in this article the contribution of highway passenger transportation price to the consumer price index is analyzed quantitatively by building a contribution degree model.The analysis shows that traffic index contributes a lot to the consumer price index and increases gradually,from 4.44% in 2002 to 7.47% in 2007,consistent with the trend of increasing private car possession;while long distance bus price index contributes less and keeps a stable level of 2.41% or so thus playing an important role in maintaining the consumer price index.