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yunnifymonte t1_j04z3eg wrote

Reply to comment by SandBoxJohn in Are most people in Washington DC liking the new Metro connection out to Dulles Airport? by pizza_4_all_

Shorten their Service Life? I’m confused, I agree about the 4000 Series, but about the 1000 Series, weren’t Metro supposed to retire them earlier, but couldn’t due to a Railcar Shortage, Pre-7ks?

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SandBoxJohn t1_j06d8po wrote

The 1k cars were designed for a service life of roughly 40 years. They began developing stress cracks in their car bodies at roughly half the length of their service life. They were for all practical purposes beyond the end of their service life before reaching 40 years.

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