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Royal University of agriculture

Royal University of agriculture. Faculty of Land Management and Land Administration. Topic: Assessment of Ambulance Response Times After Traffic Accidents by Using Network Analysis: Case Study Phnom Penh, Cambodia. Team Members: Mr. Chea Chathav Ms. Keo Khenalen

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Royal University of agriculture

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  1. Royal University of agriculture Faculty of Land Management and Land Administration Topic: Assessment of Ambulance Response Times After Traffic Accidents by Using Network Analysis: Case Study Phnom Penh, Cambodia Team Members: Mr. CheaChathav Ms. KeoKhenalen Mr. Mao Chhyfa Ms. TheaChanthy Mr. Sorn Rithysak

  2. Contents • Introduction • Methodology • Results • Discussion • References

  3. Introduction • 1.8 million registered vehicles today. [7] • 9.6 million out of 15 million of the population is in between the driving age of 16 – 65 year olds.[7] • Cambodia continues to experience rapid development and economic growth. [7] • The estimated number of vehicles will reach 2.6 million in 2018 and 3.9 million in 2023. [7] • With such rapidly growing numbers of vehicles, there is a risk of increasing number of fatal road accidents if the issue of emergency response is not addressed.

  4. Introduction (cont.) • The absolute number of road accidents has decreased in the past years. • Challenges like speeding, drunk driving, bad road conditions, insufficient health care and unenforced traffic laws have led to an increase in fatal accidents, and the annual cost of 3.5 % of GDP (500milions USD).[7] Source: English.news.cn & phnompenhpost.com

  5. Introduction (cont.) • What we want to do is to create a map which will show the nearest hospital to the scene of accident. • Purposes: • Inform the public of the closest hospitals. • Help emergency responding centers to take a good and quick decision. • Offer a possible way to reduce the time delay between accident and start of medical treatment

  6. 2. Methodology

  7. 2. Methodology (Cont.) Data used: • Road Dataset (Source: OpenstreetMap) • Phnom Penh Hospitals (Source: OSM data, hand-held GPS) • Only hospital which serve for ambulance service were added to analysis.

  8. 2. Methodology (Cont.) • We will adopt the Network Analysis in ArcGIS desktop to solve the problem. • Step 1: • Assigning Topology rules for OSM road dataset • Must Not Self-Overlap, Must Not Overlap, Must Not Have Dangle • Fixing Topology errors in ArcMap • Step 2: • Fixing crossing errors (merge and split at intersections of road dataset)

  9. 2. Methodology (Cont.) • Step 3: Due to the time constraint, we did not mention some of road conditions such as One-way road, Turning, Restriction, etc. Although we assigned average Travel Speeds to road data according to road types as below: • 55 km/h for Primarily roads and Secondary roads • 50 km/h for Tertiary roads • 40 km/h for Residential roads Adding Travel Time to road data • ((([LENGHT] /1000) / [SPEED]) *60)

  10. 2. Methodology (Cont.) • Step 4: • Creating Road Network Dataset • Step 5: • Creating Hospital Service Areas using Travel Time (Minute) as impedance of the analysis setting, and break the value of 5, 10, 30 minutes.

  11. 3. Result • The map shows the covered area for each hospital in Phnom Penh, Cambodia. • Green: 5 minutes area from each hospital • Orange: 10 minutes area for each hospital • Red: 30 minutes area for each hospital

  12. 3. Result (cont.) • Another output map which was produced with lower travel speed of ambulance. • 40 km/h for Primarily roads and Secondary road • 35 km/h for Tertiary roads • 30 km/h for Residential roads

  13. 4. Discussion • Road data, We decided to use OSM data which is an open-source data. However, the quality and accuracy of data is still considerable. • In the future, we hope to improve the results of this project by using more accurate travel times and data (e.g. road conditions, traffic density, one-way streets etc.) • It will take time and budget to cover more area in Cambodia.

  14. 5. References • Chamreoun, S. (n.d.). Define Optimal Path of Fire Response by Using GIS in Phnom Penh. Cambodia: Royal University of Agriculture. • Tong, X. (2011, July 14). Road accidents claim over 940 lives in Cambodia in past 6 months. Retrieved July 24, 2013, from http://news. xinhuanet.com/english2010/world/2011-07/14/c_13984385.html • help.arcgis.com: Network Analyst. (2012, February 2). Retrieved July 24, 2013, from http://help.arcgis.com/en/arcgisdesktop/10.0/help// 004700000035000000 • Openstreetmap.la: Cambodia road. (2013, July 1). Retrieved July 24, 2013, from http://www.openstreetmap.la/downloads/cambodia/roads.shp. zip • Kunthea, M. (2013, July 3). Road accidents drops in 2013. Retrieved July 24, 2013, from http://www.phnompenhpost.com/national/road- accidents-drop-2013 • Wilson, K. (2013, May 20). Serious Efforts Are Needed to Tackle Cambodia ’s Traffic Issues. The Cambodia Daily. Retrieved from http://www. cambodiadai ly.com

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