... an information system of Hanoi bus (HBIS) by using ArcGIS software. 2. The network dataset concept According to ESRI (Environmental Systems Research Institute Inc.) (ESRI, 200 5a and 200 5b), ... Directions magazine, 12/ 200 4 (Internet journal at www.directionsmag.com). [2] ESRI ( 200 5a), ArcGIS Geodatabase Workbooks, ESRI, Redlands, CA, USA, 262pp. [3] ESRI ( 200 5b), What is ArcGIS? ESRI, ... (UNETRANS) (Widner and Bucher, 200 5). Recently, the Hong Kong's Bus Company established their own bus information system based on ArcGIS technology (Baumann, 200 4). Moreover, the governments...