Bolton lad of course accidents happen on motorways the difference is road accidents are treated as a crime scene Metrolink isn’t, if a breakdown does happen on Metrolink there is no plan B in place whereas if a bus breaks down they bring a replacement. You and a few other commenters’ on here would settle for a third world transport system, Britain’s rail system has thousands of miles of track but breakdowns seem to be rare, Metrolink has a few hundred and they find it extremely hard to keep it working.