Abstract
A 4 mile stretch of road was constructed between the motor ways A 15 and A 16 south of Rotterdam. It does not only carry various traffic volumes between its intersections but also sic frequent bus services. The layout now consist of 2x2 and 1x2 lane sections with a reersible bus lane in the centre. Bus detection is by Vetag. The intersections are controlled by microprocessors. Overhead gantries are equipped with cross-and-arrow and special bus lane indicators.