Researchers have designed a new LED-based train headlight that uses a tenth of the energy required for headlights using conventional light sources. If operated 8 hours every day, the electricity ...
In 2011, Metro altered its safety requirements to allow defective trains to remain in service for longer if an engineering and risk assessment judged the defects to be minor. The guidelines outline ...
In 2011, Metro altered its safety requirements to allow defective trains to remain in service for longer if an engineering and risk assessment judged the defects to be minor. The guidelines outline ...
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