Some trains that currently run at 125mph could go faster if signals were upgraded—even if unveiling a new signal box might appeal less to politicians than inaugurating a futuristic new service.

如果信号升级，一些当前时速在125英里的火车可以跑的更快－－虽然推出一个新的信号盒对政府官员的吸引力，比开创一个前瞻性的新服务小。