I can only think the risk behind the project failing is already high, throwing in a complete rewire would have no doubt delayed the project even further. In addition modern fly by wire or computer controls on trains do not make them any less prone to break downs.
it took them 3 years to rewire/re-control a tram on the Manchester Metrolink and find the faults.
it took them 3 years to rewire/re-control a tram on the Manchester Metrolink and find the faults.