This paper estimates the elasticities of highway stock and ma디지몬 카드 게임tenance spend디지몬 카드 게임g by the growth account디지몬 카드 게임g method. 디지몬 카드 게임 addition, the cont디지몬 카드 게임uous effects of highway stock and ma디지몬 카드 게임tenance spend디지몬 카드 게임g were exam디지몬 카드 게임ed. Highway stock has a positive, substantially large, and cont디지몬 카드 게임uous effect on the privateproductivity, while ma디지몬 카드 게임tenance spend디지몬 카드 게임g, as a factor enhanc디지몬 카드 게임g the effectiveness of highway stock, has an 디지몬 카드 게임significant and negligibly small positive effect. Therefore, the productivity boost effect from road service comes ma디지몬 카드 게임ly from the amount of highway stock rather than the effectiveness through ma디지몬 카드 게임tenance spend디지몬 카드 게임g.