Buletin Geospatial Sektor Awam - Bil 1/2009 - Malaysia Geoportal

Sektor Awam-bil.1/2009HOW GIS HELPS IN ROAD SAFETYINTERVENTIONThere are three main ways for GIS to help in RoadSafety Intervention; that are Mapping, Analysisand Decision Support System.MappingFigure 2 : CRASH System SetupMapping goes back a long way from accidents dueto speeding, at intersections, involving specificvehicles for example motorcycles, buses, etc.;and accident by route type i.e. federal, state orexpressway route (Figure 3).However, the POL27, a form used by PDRM torecord details of an accident, contains a wealthof information that can be filtered and map. Forexample accidents occurring during rain, drivererror, injury type, drunk driving, and other valuableinformation. POL27 contains 99 variables, almostall of which can be map singularly or in relationto other variables. Interesting results can beobtained by pairing unconventional variables formapping such as distribution of accidents by hourof the day, day of the week, demography, urban/rural divide, etc.Figure 3 : Example of mappingaccident-prone areas (Johor)GIS for road safetyintervention is not aluxury but a necessity.BuletinGEOSPATIAL 3