抄録
The traffic accident database is the sole important source outside of traffic police that could help effectively to understand the traffic safety situation. For right usage, this study has clarified its special feature such as better liability, difference of purpose, object and standard. The data of 2009 confirms the efforts to ensure the traffic safety so that the fatalities are under control, but the seriousness of traffic accident is very high. Especially, the study has proposed a methodology to find out the Correction Factor of the number of accident sufferer. Based on the corrected value, it could reconfirm that the number of injured published by traffic police is unrealistically low. It shows the underreporting level is about 63 times. It proved that the corrected data are quite in concordance with a rule from the Vietnamese Injury Pyramid that for each fatality, there are 58 injuries at difference seriousness.
