4-4-0

The notation "4-4-0" typically refers to a type of locomotive wheel arrangement known as the "2-4-0" in Whyte notation. This indicates:

• 4 leading wheels (usually on two axles)
• 4 driving wheels (on two axles)
• No trailing wheels

However, since the notation here is "4-4-0," it might refer to a different classification or context depending on the specific railway system or country. Could you please clarify if you're referring to locomotive wheel arrangements, a specific engineering context, or something else?