You need to decrease the speed of a conventional train on an ascending grade. Which of the following is the best method?

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Multiple Choice

You need to decrease the speed of a conventional train on an ascending grade. Which of the following is the best method?

On an ascending grade, gravity naturally slows the train, so you want to use that to your advantage. Easing back the throttle gradually, one notch at a time, lets the grade contribute to deceleration while the slack between cars remains taut. This produces a smooth, controlled slowdown, minimizes brake wear and the risk of wheel slip, and avoids the jolt you’d get from a sudden brake application or from trying to hold speed with more power. Coasting or a rapid brake application would be less controlled and riskier on a grade.

On an ascending grade, gravity naturally slows the train, so you want to use that to your advantage. Easing back the throttle gradually, one notch at a time, lets the grade contribute to deceleration while the slack between cars remains taut. This produces a smooth, controlled slowdown, minimizes brake wear and the risk of wheel slip, and avoids the jolt you’d get from a sudden brake application or from trying to hold speed with more power. Coasting or a rapid brake application would be less controlled and riskier on a grade.

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