This investigation is part of the project Effect models for road traffic installations (EMV) which is financed by the Swedish Road Administration. The aim has been to explain and predict, with models and empirically, the risk levels of groups of road users on street links. Risk levels refer to being injured or killed in a traffic accident. The data obtained by local authorities in the traffic network analyses performed according to the procedure described in the planning handbook "The quiet street" have been used as the basis. Among other things, the results highlight the strong relationship that exists between death rate and injury rate and the speeds of motor vehicles. The empirical results are in good agreement with the relationship between the probability of fatal injury and collision speed according to the probability of pedestrian injury - impact speed curve. The results of the investigation are interesting and capable of development, and there are therefore strong reasons to do further work on a more refined model that explains and predicts the risk levels in the street system in urban areas in a more flexible manner.