Samenvatting
ROAD ACCIDENT OCCURRENCE IS GENERALLY ASSUMED TO BE GOVERNED BY A RANDOM PROCESS. EXPERIENCE ANALYSING ACCIDENT COUNT SERIES INDICATES A NEED FOR TESTING THE RANDOMNESS OF SUCH A SERIES, AND A SIMPLE STATISTICAL TEST IS DESCRIBED. THE TEST IS MODIFIED ONE-SAMPLE RUNS TEST, WHICH CAN BE USED TO ASSIST THE IDENTIFICATION OF THREE DISTINCT PATTERNS CONSTITUTING NON-RANDOMNESS (NAMELY, A TREND, A DISCONTINUITY AND OVER-CORRECTION). THE TEST IS DESIGNED FOR THE PRELIMINARY ANALYSIS OF ACCIDENT COUNT DATA, AND ITS USE IS DEMONSTRATED, USING BOTH ARTIFICIAL AND ACTUAL ACCIDENT COUNT SERIES.(Author/publisher).