Abstract Purpose of this paper is to improve methodology of pedestrian knockdown accidents investigation. Object of research – development of method of hazard occurrence moment definition in case of pedestrian knockdown accident. This article is presenting and describing particular features of the given hazard occurrence moment, generalizing the available materials pertaining to topic under consideration and introducing a new scientific turn of speech “truncated pedestrian's stopping distance”. Subject of research – determination of “truncated pedestrian's stopping distance” with reference to his rate of motion. Authors’ proposal may be treated as an integrated practice of pedestrian knockdown accidents investigation (pedestrian crossing the road out of walkway) allowing to avoid diametrically opposed conclusions regarding the driver's guiltiness.