Each year, the number of registered motorcycles continues to grow rapidly, and each year at least 1% of them get involved in road accidents. Out of the 1% of a motorcycle involved in road accidents, more than 10,000 riders and pillions are injured and killed every year. Recent statistics (2013) indicate the number of casualties is at least 8,000 including fatal cases in Malaysia. A motorcyclist is more at risk of being killed or injured in a road crashes than any other type of vehicle used. The risk depends on factors such as the rider’s age, sex, type of road, characteristic of the motorcycle and experience. When detailed out to a fatal crash involving motorcycle by road category, crash occurrence highest on State Road (34%) and Federal Road denoted only by 29%. However, this research needs to be conducted since Federal Road was the longest road in Malaysia.
The aim of this study was to determine the risk of motorcycle crashes occurrences at selected federal roads. In addition, this study was an extension from the past study which aims to determine the vehicle speed approaching posted speed sign on the federal road in Negeri Sembilan. Therefore, this study was conducted at Negeri Sembilan which identified from Buku Daftar Jalan, Jabatan Kerja Raya as among state which the sixth largest federal road after Pahang, Johor, Perak, Sabah and Sarawak. Thus the distribution of motorcycle fatalities along study was being plotted using ArcGIS based on road crash location information (i.e.: road kilometre number or coordinate), which obtained from police road crashes form known as POL 27. While road attribute such as area and roadway categories were identified and segmentized manually during on-site data collection.
Based on crashes recorded by RPM, even the motorcyclist casualties show lower in Negeri Sembilan but the number of crashes shows increasing year by year. A total 465.94 km federal road network was covered in this study. Crash data related to road category was computed using crash data provided by Royal Malaysian Police (RMP). Based on data obtained from RMP, from the year 2009 to 2013 total 5,665 road crash occur at study area (including damage only). Out of this number 1,727 cases were involved motorcycle. In terms of the motorcyclist (rider and pillion) involved in the road crash, result show 2,084 with 137 deaths. Even though the number contribute 1% of a total motorcycle crash in Malaysia, this study needed due to police reported over 50% of motorcycle death occur at the federal and municipal road and also in the rural area (RMP, 2013). Highest fatalities (74%) also reported at the road with two-way traffic system and the dual carriageway denoted only by 6%. Two-way traffic system has a closed relation with speeding and overtaking road offence.
Furthermore, the risk of motorcycle fatal crashes was computed by using a formula as stated. To calculate the risk, each federal road was divided into a few section based on area and roadway type. Each section gave the different value of risk whereas also gave small crash risk. The risk of motorcycle fatal crashes has calculated per million vehicles. The results show the risk of a motorcycle fatal crashes per million vehicles approaching single carriageway (433.97 km) were 1.74 times higher than crashes on dual carriageway (29.34 km). Meanwhile, the risk of a motorcycle fatal crashes per million vehicles approaching the rural area (377.54.2 km) is 3.57 times higher than crashes in the suburban area (35.12 km). These differences were found significant. In term of age and gender, age group 11 to 30 and male was a higher group involved in motorcycle crashes.