Unit-segment Analysis: A Space Syntax Approach toCapturing Vehicular Travel Behavior EmulatingConfigurational Properties of Roadway Structures

摘要

One of the critical concerns of axial analysis, a space syntax approach to capturing vehicular travelbehavior emulating configurational properties of roadway structures, is the absence of the time-costconsideration while dealing with route-choice problems encountered in grid-like urban textures. Thisstudy shows that the time-cost parameter of travel can also be introduced into the syntax approach tocapturing the route-choice decisions for the purpose of modeling vehicular movement networks withgreater accuracy. Assuming that roadway units are trip-origins and trip-destinations and that theyalso act as connecting route segments among each other, a theoretical foundation has been proposedshowing how the mobility characteristics of these units, in terms of the time-cost of travel, influencetheir accessibility measures or syntax integrations. These new roadway units are the unit segments,and their integrations are found to be better indicators of vehicular trip-makers’ route-choicedecisions than axial integrations. Conclusions suggest that the unit-segment analysis of an urbangrid captures the general behavior of vehicular flow by substantiating the fact that trip-makers tendto pick a specific set of roadway units that not only comprise the close connection between a triporiginand a trip-destination but also consume less time for travel.