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differences in running freight vs. passenger
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<p>There are a few differences as far as air brakes go. I'm not a locomotive engineer so these are both very simplified:</p> <ul> <li>Passenger trains typically use an operating pressure (in the brake pipe and elsewhere) of 110 psi, while freight trains use 90 psi. That extra pressure allows an engineer to apply the brakes harder and/or more times within a certain period.</li> <li>In addition, passenger trains have graduated braking, allowing the engineer to "ease off" the brakes to some degree. Freight equipment can only be released completely.</li> </ul> <p>All bets are off when you're talking about historic equipment, whether passenger or freight. I've worked for a railroad that runs passenger trains at 70 psi with a manually-lapped brake system in the cab...</p>
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