Luas will not only affect cars. Dublin Bus estimates that the light rail system is already causing serious disruption to its services, even before it is formally commissioned. The company recently stated the running time on the number 51 route had doubled because of the Luas works, while journey times on routes 39, 68 and 69 had been seriously affected. Those who use these routes will not benefit from Luas because they live in Clondalkin, Rathcoole, Newcastle, Castleknock and Blanchardstown, parts of the city which will not be served by the system.