MODELLING VIETNAM’S EXPRESSWAY NETWORK Presented by: Ms. Le Thi Lan Bizdev.asia Summary • Presentation by consultant • Recently worked on an ADB assignment supporting the Vietnam Expressway Management Office • Good progress with a GIS • Next step is traffic modelling • Joined this seminar to tell you about our progress using GIS for a national network, and to learn about traffic modelling MINISTRY OF TRANSPORT (MOT) DIRECTORATE FOR ROADS OF VIETNAM (DRVN) VIETNAM EXPRESSWAY MANAGEMENT OFFICE (VEMO) Vietnam expressway status Completed Under construction Under detail design Planned 224 km 487 km 242 km >2,374km 6.7% 14.6% 7.3% >71.4% Name of Section Length (km) Phap Van - Cau Gie 29 Cau Gie - Ninh Binh 50 Ho Chi Minh - Trung Luong 39.8 Lang - Hoa Lac 29 Noi Bai - Bac Ninh” 33 Ha Noi-Lang Son (Thanh Tri Bridge to Bac Giang boundary)” 19 Hanoi ring road 3 25 Total 224.8 * Note: some sections permit motorbikes and are not strictly expressway standard HANOI Vietnam Expressway Network DANANG HO CHI MINH CITY North Central DANANG South HO CHI MINH CITY Data Management by GIS Objective: 1. Management of data on expressway alignments, sections, interchanges, toll gates, traffic volumes, implementation status, numbering system, parties involved etc. 2. Single source of data available to decision makers, Ministry staff 3. Publishing GIS data through a website shares information with potential investors, consultants carrying out studies, Government staff, the media and the public 4. The GIS network model potentially forms a basis for traffic modelling Data Management by GIS Data fields: Expressways: 1. 2. 3. Expressway alignment data in uniform coordinate system Attribute data: Length, status, developer, designer etc. Interchanges National highways: 1. 2. 3. 4. 5. Complete road network Status of planned widening of NH1 which is the key North-South artery Traffic count data Tollgate locations and details Traffic video Others (Reference) 1. 2. 3. Industrial Zones Airports Major Ports Challenges in data collection • No existing system for management of expressway data • Data held by multiple sources (Ministry, developers, consultants etc.) • Data often in spreadsheets (not geo-referenced), or in various coordinate systems • Data changes (alignment, ICs etc.) during project life cycle from masterplan to detailed design • Implementation schedule is continuously changing Website Overview 1. 2. 3. 4. 5. Data exported from GIS Uses Google Maps as background Google license terms (must be public access) Data in layers which can be turned on and off by the viewer Zoom limit applied View of Website Website Menu • Menu – layers can be turned on or off Example Data for Expressway Section Background Options – Google Map Background Options – Google Earth Expressway map + Industrial Zones Website address • The website can be seen at: http://www.vn-project.com/ An expressway traffic model • Previously traffic models in Vietnam have been created by JICA projects using STRADA, but have some disadvantages - Software is not in general use by international consultants - Reliability / credibility of model and results - Very few people can use / have access to data • VEMO wants to be able to own and operate it’s own model for scenario studies, revenue analysis, feasibility study Status of developing traffic model 1 Network model Exists in GIS, but need to identify as nodes and links, and confirm timing of future network development 2 Traffic data 2010 data available for some national highways, but not latest 3 Administrative boundaries, population, land use data, vehicle ownership data Available in principle 4 Studies on diversion ratios Ongoing 5 Traffic modelling Not yet started Next steps 1. 2. 3. 4. Develop rough traffic model Continue to refine the model Carry out in-house studies Issue the model to investors / consultants as a base model in their detailed studies 5. Use the model to review feasibility study results 6. Use the model to monitor forecast and actual diversion ratios / traffic volume / revenues Thanks to: • ADB Project: PATA 7611-VIE: Strengthening Institutional and Financial Arrangements, Operation and Maintenance, and Governance in Road Transport • Vietnam Expressway Management Office Thank you very much!