The purpose of the following report is to account for and summarize the authority and tasks that municipalities, authorities and contractors have in the implementation of temporary traffic diversions. In addition to this, the cooperation between all actors has also been investigated with the aim of finding out what types of routines and potential tools are used in connection with the work. The implementation of the report is based on a qualitative study, for which relevant people with different tasks have been interviewed or answered questionnaires. Furthermore, governing documents for relevant parties have been studied with the intention of describing the requirements that apply to work adjacent to or on the road. The results have subsequently been compiled in an account of the work parties' tasks, views and suggestions for improvement. In this it appears that the road maintenance authorities have an examinative responsibility and has the authority to approve the work carried out on its behalf. For and in particular all road works, of which the diversion is a part, traffic device plans must also be drawn up and describe solutions for traffic-related problems. These are the tasks of the executing contractor to draft with regard to the requirements of the road maintenance authority. It also appears that the majority of the interviewees consider the cooperation to be satisfactory, but state how interpretation of the governing documents can result in conflicts between the parties. In addition, significant differences for the systems used in the coordination can be noted for each municipality and authority.