Roadworks are signposted to make road users realise that roadworks are in progress, advise them how they must act and how they can pass the roadworks in a safe manner. In spite of this, incidents and accidents do occur at roadworks where road users are involved. It is important to chart the problems which arise when those working on the road and other road users come into contact. A part of the work is to study the road accidents and incidents that occur at roadworks. To be able to do this, there is a need for relevant statistics concerning such accidents and incidents. Since conditions at roadworks are special, it may be necessary to compile special statistics concerning the road accidents and incidents that occur in connection to these. The aim is to compile statistics concerning incidents at roadworks. These statistics must provide a description of where, when and how the incidents occur. They must also serve as a model for the way in which regular collection of data concerning road accidents and incidents at roadworks can be carried out. Vägverket Produktion, the Production Section of the Swedish Road Administration, collects and compiles reports on incidents and accidents which occur in conjunction with their work on roads. This study comprises about 150 such incidents and accidents collected from 2004 until autumn of 2007. The method employed was to set up, with the support of the descriptions of occurrences, new variables for the compilation of statistics. These variables can then, presumably after a lot of modifications, be used in a more regular reporting of incidents in which all those who perform work on roads take part.