El tren parte del andén.

Both partir and salir can be translated as to leave or to depart, but they are not always used in exactly the same way.

• El tren parte del andén sounds a bit more like The train departs from the platform.
• El tren sale del andén is also possible in many contexts, but partir often feels slightly more formal or more specifically tied to a departure.

So parte is the 3rd person singular present form of partir, matching el tren.

Del is the contraction of de + el.

So:

• de el andén → del andén

In Spanish, this contraction is normally required when de is followed by the masculine singular article el.

Examples:

• del tren = from the train
• del andén = from the platform

One exception: if El is part of a proper name, you do not contract it:

• de El Escorial

Spanish uses articles more often than English does. Here, el tren means the train.

Even when English might sometimes say just train in certain contexts, Spanish often prefers the article with singular countable nouns:

• El tren llega tarde.
• El tren parte del andén.

Also, tren is a masculine singular noun, so it takes el.

Because andén is also a noun, and in Spanish it is natural here to say the platform, not just platform.

So:

• del andén = from the platform

This is one of those places where Spanish often uses an article where English may or may not, depending on style.

Andén means platform in the railway sense: the area next to the tracks where passengers wait for the train.

In Spain, andén is the normal word for a train platform.

Useful note:

• plataforma exists, but it is not the usual word here for a railway platform.
• For trains, andén is the word you want.

A good approximation is:

• an-DEN

The stress falls on the second syllable because of the written accent: andén.

A few pronunciation tips:

• a as in a short, open ah
• n as in English
• d in Spain is usually softer than English d between vowels, though here it is still fairly clear
• én is stressed

The written accent is important because it tells you where the stress goes.

The accent mark shows that the stress falls on the last syllable: an-DÉN.

Without the accent, Spanish spelling rules would suggest a different stress pattern. So the accent is there to mark the correct pronunciation.

This is very common in Spanish:

• café
• estación
• andén

Because el here is the article the, not the pronoun he.

• el = the
• él = he

So:

• El tren = The train
• Él parte = He leaves / He departs

The accent helps distinguish the pronoun from the article.

Parte is the third person singular present indicative form of partir.

Conjugation:

• yo parto
• tú partes
• él/ella/usted parte
• nosotros/nosotras partimos
• vosotros/vosotras partís
• ellos/ellas/ustedes parten

Because the subject is el tren (the train), Spanish uses parte.

Grammatically, yes, but it is much less natural in most ordinary announcements or general statements.

• El tren parte del andén = simple present, very natural for schedules, announcements, and general facts
• El tren está partiendo del andén = emphasizes the action in progress, more like The train is in the process of departing from the platform

Spanish often uses the simple present where English might use either simple present or present progressive.

Because Spanish usually does not need subject pronouns when the verb form already makes the subject clear.

Here:

• parte already tells you it is he/she/it/you formal
• and el tren is explicitly stated anyway

So adding él would be wrong here, because él means he, and the subject is the train, not he.

Yes. Parte can also be a noun in other contexts, meaning things like part, report, or side, depending on the expression.

Examples:

• una parte = a part
• el parte médico = the medical report
• por mi parte = for my part

But in El tren parte del andén, parte is clearly the verb from partir.

Yes, it is natural and correct in Spain, especially in a more formal or informational style, such as railway language, announcements, or written notices.

You might also hear related phrases like:

• El tren sale de la estación.
• El tren parte a las ocho.
• El tren parte del andén 4.

So this sentence sounds perfectly normal in Peninsular Spanish.