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<p>[quote user="eastside"]As a counter-example, what about New York City subway trains or PATH commuter trains?  During rush hours some trains have about 500 passengers and run at intervals of about a minute.  That's a huge responsibility.  They're remarkably safe, and I don't hear anyone saying safety suffers for lacking a second person in the cab -- remarkable in a city filled with so many people quick to criticise.  One thing not mentioned is that most commuter operations run on a thin edge, requiring a second person would probably make most of them economically unviable.[/quote]</p><p>Subway systems are equiped with fail safe devises that will stop train in the advent of a speed limit or signal aspect violation.  As I said before you are comparing apples to oranges here. </p>
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