CAJ | 학술논문

交通系统的本质目标是为了提高个体的可达性。已有的基于时空维的时空可达性计算方法忽略交通模式选择的约束，以及对于出行时间没有确切的概念，因此，提出了基于公交时空过程的城市时空可达性计算方法。该方法以特定的公交出行时空约束作为效用函数，从历史公交时空过程中获取公交出行时间，对于出行时间的计算更具可操作性；并且，其考虑特定的时空约束下个体参与活动的效用值，显得更加严谨。同时该方法将特定的交通出行方式作为一种出行的时空约束，更加符合现实情况。最终，以广州市公交系统为研究对象，运用该方法计算特定时空约束下个体出行的城市时空可达性。结果表明该方法具有有效性和可操作性。
교통계통적본질목표시위료제고개체적가체성。이유적기우시공유적시공가체성계산방법홀략교통모식선택적약속，이급대우출행시간몰유학절적개념，인차，제출료기우공교시공과정적성시시공가체성계산방법。해방법이특정적공교출행시공약속작위효용함수，종역사공교시공과정중획취공교출행시간，대우출행시간적계산경구가조작성；병차，기고필특정적시공약속하개체삼여활동적효용치，현득경가엄근。동시해방법장특정적교통출행방식작위일충출행적시공약속，경가부합현실정황。최종，이엄주시공교계통위연구대상，운용해방법계산특정시공약속하개체출행적성시시공가체성。결과표명해방법구유유효성화가조작성。
Transportation systems exist to improve individual accessibility. The existing space-time accessi-bility measure (STAM) method based on space-time pyramid ignores the limit to the choice of traffic pattern, and had no exact concept about travel time. Therefore, this paper proposes the space-time accessibility mea-sures method on the basis of space-time process. The method takes the space-time constraint on bus as utility function, and gets the travel time by bus from space-time process, thus it is more tractable on the calculation of travel time. Besides, the method can be more rigorous by the consideration of user and locational benefit based on mandatory space-time constraint. And the method takes traffic modes as a kind of space-time con-straint, so it is more realistic. At last, the article studied bus transport system of Guangzhou, and used the method to calculate space-time accessibility of individual trip under the mandatory space-time constraint. The result shows that the proposed method is effective and tractable.