Olyckstypsklassificering: jämförelser i tid och rum

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Jörgen Larsson

On behalf of the Swedish Institute for Transport and Communications Analysis SIKA, VTI has written a historic account of accident type classification in Sweden, and made a review of international recommendations and of the way in which a number of neighbouring countries perform their accident type classification. The retrospective review in Sweden extends to 1966 when the Swedish Council on Road Safety Research drew up a classification system. It was based on the situations and manoeuvres that preceded the accident and was thus a causal system. The system was however more detailed than the accident types which were presented in the official statistics. Over the years, minor changes were made to the accident types, certain events or conflicts were assigned to different accident types, as in the case of e.g. U turns, and accidents involving wildlife were made a separate accident type. Over many years, accident type classification was carried on by both the Swedish National Road Administration (VV) and Statistics Sweden SCB, but after 1994, when VV took charge of accident classification for the entire Swedish road network, the police in 1997 stopped direct reporting to SCB of road traffic accidents involving personal injury. VV was thus the only body that was responsible for accident type classification, and for some there had been a progressive increase in the automatic classification of accidents. When STRADA (Swedish Traffic Accident Data Acquisition) was introduced in 2003, accident types were given a consequence orientation (the way damage and/or injuries occurred). A few new accident types were introduced, but the names of the previous types were retained in spite of the fact that they no longer describe the same things as before.

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