404. That’s an error.
The requested URL /translate_c?hl=vi&sl=en&u=http://www.railway-technical.com/sigtxt2.shtml&prev=/search%3Fq%3Drailway%2Bsignal%2Bcontrol%2Bsystems%26start%3D10%26hl%3Dvi%26sa%3DN&rurl=translate.google.com.vn&usg=ALkJrhj2Y91cmHQb26oS1WKlUn3aWLHDcw
was not found on this server. That’s all we know.