The road engineering administration of the district of Neuss has been restructuring town entrances on district roads for more than 5 years. These transformations are designed to achieve the following aims: (1) improvement of road safety; (2) speed reduction of vehicles; (3) improvement of the cyclists situation; and (4) revaluation of residential areas. By making the necessary structural changes we should achieve at the entrance to the town our objective of enforcing compliance with innercity speed limits while the connecting function of the road should not be much affected. The following types of measures have been applied: (1) narrowing of the pavement; (2) refuge islands; (3) strips of pavement stones; (4) speed bumps (3) strips of pavement stones; (4) speed bumps (of plaster or asphalt); (5) planting of trees; and (6) combination of the above mentioned types of measures. The efficiency of these restructuring measures has been checked by "before and after" studies. In general the measures could reach positive effects. The speed bumps of asphalt as a new element have proved to be efficient so far. They avoid noise nuisance caused by using pavement stones, and remarkably reduce the speed of the vehicles.
Abstract