Once all the information relating to an accident has been collected, and we know everything about the technical characteristics of the vehicles and of the roadway, an overall written evaluation of the accident is produced, constituting a prereport. This will indicate, at very low cost, if it is going to be possible or not to carry out the definitive Road Traffic Accident Reconstruction Report. 
The reconstruction technical reports, which are documentary means used habitually in court decisions, are prepared on the basis of the police report and from the photographic record, and also on the basis of the inspection of the site of the accident and of the vehicles damaged therein.
When the accident is particularly complex, the report will be accompanied by a two- or three-dimensional animation of the process, prepared by Cesvimap by means of the computer program Reconstructor, which enables interpretation of the facts.