This big lever here, that's the throttle. This little one here, that's the brake. And those are the pressure gauges. And that rope is the whistle.

12 seconds sound clip from the The Polar Express movie soundboard.

You can hear this line at 00:31:39 in the Blu-ray version of the movie.

Quote context

[...]

- There's only one trick to this, kid. When I say jump, you jump!

- You? I thought you got thrown off, and... You're driving the train?

- They put me in charge. The engineer had to check the light.

- Here's the light. All right, now. Watch it. Careful.

- Oh! I got it.

- How do you know how?

- It's easy. Come here, I'll show you.

- This big lever here, that's the throttle. This little one here, that's the brake. And those are the pressure gauges. And that rope is the whistle.

- The whistle.

- Mm-hm.

- You wanna try it?

- I've wanted to do that my whole life.

- Hold still! Hold still! Don't move!

- Look!

[...]