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Re: How Railroad Could Have Avoided / Ameliorated Fiery Crash

Posted by AlM on Sat Feb 7 14:17:05 2015, in response to Re: How Railroad Could Have Avoided / Ameliorated Fiery Crash, posted by Dutchrailnut on Sat Feb 7 14:11:33 2015.

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Rail friction is proportional to the weight on the rail. So if a rail car weighs 3 times as much per wheel, the wheels can exert 3 times the frictional force. Therefore the achievable deceleration is the same.

I think transit system operators have made a conscious decision to limit braking power because the occasional avoided crash is less hazardous than repeated serious injuries from excessively rapid deceleration.

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