Samenvatting
A description is given of the layout of the urban motorway between the centre of The Hague and the A 12, together with the signalization of this motorway. The part of the of the motorway in The Hague is built as an open tunnel, which gives problems in cases of giving assistance for traffic accidents and other calamities. For making adequate assistance possible a system of traffic signalization is developed. The system is described and a survey is given of the technical realization of the system.