OCSC were appointed by Dublin City Council and the Quality Bus Network Office to design the Clanbrassil Street Quality Bus Corridor (QBC) scheme. The scheme is approximately 2 kilometres long from Nicholas Street to the South Circular Road, passing through the major signalised junction at Kevin Street, Patrick Street and New Street. The scheme also included a short section of QBC along Bride Street. The site is in the heart of the City Centre with some of the highest volumes of pedestrian and vehicle traffic in the country.
The works involved the redesign of urban dual carriageway road markings to provide bus lanes, the provision of new cycle and footpath facilities, the upgrade of the existing traffic lights to provide improved pedestrian and cycle crossing facilities, public lighting, service diversions and minor civil engineering works. The scheme also comprised an extension of the Dublin City Council traffic management system (SCATS) to include the South Circular Road signalised junction. The design involved extensive traffic modelling with the development of a TRANSYT Traffic Model which was used to illustrate trip times and speeds for the new bus lanes along with peak hour traffic delay and queuing. The scheme required a significant level of liaison with the Quality Bus Network Office and the Transportation Department of Dublin City Council.
OCSC provided alignment and junction control design, signage and delineation, traffic modelling, contract documentation and contract administration services for the project.