The ARROWS project (Advanced Research on Road Workzone Safety Standards in Europe) is funded by the European Commission under the Transport RTD Programme of the 4th Framework Programme. It began on September 18, 1996 under the provisions of Contract No. RO-96-SC.401. The planned duration of the project is two years. This paper describes the project and its first step – the building of a possible common European typology. The main objectives of ARROWS include: development of a unified range of applicable road workzone safety measures and principles that should govern the planning, design implementation and operation of road workzones, so as to mitigate their adverse effects on the safety of workers and road users; and production of a practical handbook for guidance to network managers at all levels.