This book is about retrospective analysis on road crashes data. Statistical Quality Control chart; Cumulative Sum (CUSUM), Exponentially Weighted Moving Average (EWMA) and Moving Average control chart schemes were studied and designed using road traffic crashes data. In order to compare the performances of the three charting techniques, Monographs and statistical softwares (ANYGETH and MINITAB) were used. Finally, the performances of the three designed control chart schemes were compared.