Estimating O-D Trips Between Sub-divided Smaller Zones Within a Traffic Analysis Zone KIM, Jung In; KIM, Ikki;
The Korea Transport Institute (KOTI) builds the origin and destination(O-D) trip data with relatively smaller zone size such as Eup, Myeon, Dong administration unit districts in metropolitan area. Otherwise, O-D trip data was built by bigger size of traffic analysis zone(TAZ) such as Si, Gun, Gu administration unit districts for rural area. In some cases, it is needed to divide a zone into several sub-zones for rural area in order to analyze travel distribution pattern in detail for a certain highway and rail project. The study suggested a method to estimate O-D trips for sub-zones in the larger-size zones in rural area. Two different distribution models, direct demand model and gravity model, were calibrated for sub-zone's intra-zonal O-D trip pattern with metropolitan area O-D data which has smaller zone-size (sub-zone) data categorized by low, middle and high population density. The calibration results were compared between the two models. The gravity model with impedance function of power functional form was selected with better explanation for all groups in the metropolitan area. The adjusted was 0.7426, 0.6456 and 0.7194 for low, middle and high population density group, respectively. The suggested O-D trip estimating method is expected to produce enhanced trip patterns with sub-divided small zones.
direct demand model;gravity model;impedance function;intra-zonal trip;trip distribution;
Adib K. (1983), Transportation Demand Analysis, McGraw-Hill Book Corporation, New york, 96, 165.
Bhatta B. P., Larsen O. I. (2011), Are Intrazonal Trips Ignorable?, Transport Policy, 18(1), 13-22.
Choi S. T., Rho J. H. (2013), Development of a Model for Estimation Intra-zonal Trip Introducing Zonal Land-use Characteristic Variables, Journal of Korea Planning Association, 48(1), 57-67.
Ghareib A. H. (1996), Different Travel Patterns: Interzonal, Intrazonal, and External Trips, Journal of Transportation Engineering, 122(1), 67-75.
Greenwald M. J. (2006), The Relationship Between Land Use and Interzonal Trip Making Behaviors: Evidence and Implications, Transportation Research Part D, 11(6), 432-446.
Kim I. K. (2006), Reconsideration on Calibration and Forecasting Procedure for Transportation Demand Analysis, Transportation Technology and Policy, 3(1), Korean Society of Transportation, 87-106.
Korea Development Institute (2008), A Study on Roadway.Railway Part Feasibility Study Standard Guideline Supplementation and Amendment (5th Edition), 242-249.
Park J. H., Kim I. K., Bak J. E., Kim H. C. (2011), Approximation Method of Intra-zonal Trips for Empty Cells in O/D Trip Table, The 63rd Conference of KST, Korean Society of Transportation, 241-246.
Ryu Y. G. (2006), A Study on Inner Zone Trip Estimation Method in Gravity Model, Journal of Korean Society of Civil Engineers, 26(5), 763-769.
Ryu Y. G., Lee J. H. (2001), A study on Inner Trip Characteristics and Application of Network Assignment, Journal of Korean Society of Civil Engineers, 21(2-D), 153-164.