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| Re: PA5 Pics (750189) | |||
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Re: PA5 Pics |
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Posted by RonInBayside on Sun Mar 1 12:12:35 2009, in response to Re: PA5 Pics, posted by trainsarefun on Sun Mar 1 12:05:43 2009. The new trains use more modular components. You can swap out circuit boards, a/c units and other things and replace them with upgraded equipments. You can upgrade software. It's an application of the LRU concept the military services do ("Line Replaceable Units") This means that upgrading a subway car with new gear and improved functions does not require a complete overhaul. |
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