Omstigningen blev lettere, fordi rulletrappen gik helt ned til den anden perron.

Because -en is the definite article added to the noun: omstigningen = the transfer.

In Danish, the definite article is usually attached to the end of the noun:

• en omstigning = a transfer
• omstigningen = the transfer

So the sentence is talking about a specific transfer, not just transfers in general.

Blev is the past tense of blive, which often means become.

So:

• blev lettere = became easier
• var lettere = was easier

The sentence is describing a change: the transfer was not as easy before, and then it became easier. That is why blev is the natural choice.

Lettere is the comparative form of let.

• let = easy/light
• lettere = easier
• lettest = easiest

Here it means easier, because the sentence compares the situation before and after.

Because let normally forms its comparative with -ere:

• let → lettere

Using mere is possible with some adjectives, especially longer ones, but with short common adjectives like let, the normal form is lettere.

Fordi means because. It introduces the reason:

• Omstigningen blev lettere = The transfer became easier
• fordi rulletrappen gik helt ned til den anden perron = because the escalator went all the way down to the other/second platform

So fordi starts a subordinate clause explaining why the transfer became easier.

Because Danish subordinate clauses still often begin with the subject followed by the verb, especially when there is no adverb like ikke, aldrig, or ofte to show the difference clearly.

So:

• fordi rulletrappen gik ned ...

looks similar to English word order.

The more noticeable subordinate-clause word order shows up when an adverb is present:

• main clause: Rulletrappen gik ikke ned
• subordinate clause: fordi rulletrappen ikke gik ned

So in your sentence, nothing unusual appears because there is no such adverb.

Rulletrappen means the escalator.

It comes from:

• en rulletrappe = an escalator
• rulletrappen = the escalator

Like omstigningen, it has the definite ending -en.

Yes. In Danish, gå can be used about machines or systems operating or moving in a certain direction.

So rulletrappen gik ned literally looks like the escalator went down, but idiomatically it means something like:

• the escalator was going down
• the escalator ran downward

This is a natural Danish way to describe the direction an escalator was moving.

Helt here means completely or all the way, and ned means down.

So helt ned means:

• all the way down
• right down

It emphasizes that the escalator went the full distance down to the platform.

Because ned gives the direction down, while til adds the destination: to.

So:

• gik ned = went down
• gik ned til den anden perron = went down to the other/second platform

The combination makes the endpoint clear.

It can mean either the other platform or the second platform, depending on context.

Anden can mean:

• other
• second

So den anden perron could mean:

• the other platform
• the second platform

In many real situations, the context tells you which one is meant.

Because when a singular noun is definite and has an adjective before it, Danish usually uses double definiteness:

• definite article before the adjective: den
• noun usually in its base indefinite form: perron
• adjective in definite form: anden

So:

• perronen = the platform
• den anden perron = the other/the second platform

This is a very common Danish pattern:

• den store bil = the big car
• det nye hus = the new house
• de gamle bøger = the old books

Because perron is a common gender noun, not a neuter noun.

In Danish:

• common gender often takes en
• neuter gender takes et

Since it is:

• en perron

the correct form is:

• den anden perron

If it were a neuter noun, you would expect andet instead.

Yes. Let can mean both easy and light, depending on context.

Examples:

• en let opgave = an easy task
• en let taske = a light bag

In this sentence, lettere clearly means easier, not lighter, because it describes omstigningen.

It is singular.

• en omstigning = a transfer
• omstigningen = the transfer

Plural would be different, for example:

• omstigninger = transfers
• omstigningerne = the transfers

So the sentence is about one specific transfer.

Yes, but it changes the nuance.

• blev lettere = became easier
• var lettere = was easier

If you use blev, you highlight a change. If you use var, you simply describe the situation.

So the original sentence suggests that something made the transfer easier than before. That is why blev fits especially well.

Because Danish normally uses a comma before a subordinate clause introduced by words like fordi, at, som, and hvis.

So:

• Omstigningen blev lettere, fordi ...

This comma is standard Danish punctuation.