I lys av togforsinkelsen oppdaterer togselskapet ankomsttiden.

I lys av is a fixed expression meaning in light of, in view of, or considering.

So I lys av togforsinkelsen means something like:

• In light of the train delay
• Given the train delay
• Considering the train delay

It is a fairly formal or neutral expression, and it is common in news, official messages, and written Norwegian.

That part is an adverbial phrase giving the context or reason for the action.

Norwegian often puts this kind of information first when the speaker wants to emphasize the circumstances:

• I lys av togforsinkelsen oppdaterer togselskapet ankomsttiden.
• More basic order: Togselskapet oppdaterer ankomsttiden i lys av togforsinkelsen.

Both are grammatical. Starting with I lys av togforsinkelsen gives slightly more focus to the delay as the reason.

This is because of the V2 rule in Norwegian. In main clauses, the finite verb usually comes in the second position.

Here, the first position is taken by the adverbial:

• I lys av togforsinkelsen = first position

So the verb must come next:

• oppdaterer = second position

After that comes the subject:

• togselskapet

That is why the order is:

• I lys av togforsinkelsen oppdaterer togselskapet ankomsttiden.

If the subject came first, it would be:

• Togselskapet oppdaterer ankomsttiden i lys av togforsinkelsen.

In Norwegian, the subject does not always come before the verb. Because of the V2 rule, the verb can come before the subject when something else is placed first.

Here is the structure:

• I lys av togforsinkelsen = fronted adverbial
• oppdaterer = finite verb
• togselskapet = subject
• ankomsttiden = object

You recognize togselskapet as the subject because it is the thing doing the action of updating.

Togselskapet is a compound noun:

• tog = train
• selskap = company
• togselskap = train company / railway company
• togselskapet = the train company

Norwegian uses compound nouns very freely, much more than English does. Instead of writing separate words, Norwegian often joins them into one word.

The ending -en marks the definite singular form of a masculine noun.

Base noun:

• en forsinkelse = a delay

Definite form:

• forsinkelsen = the delay

In the compound noun:

• togforsinkelse = train delay
• togforsinkelsen = the train delay

So togforsinkelsen refers to a specific delay, not just any delay.

Ankomsttiden means the arrival time.

Breakdown:

• ankomst = arrival
• tid = time
• ankomsttid = arrival time
• ankomsttiden = the arrival time

The definite form is natural here because the company is updating a specific arrival time, not just some arrival time in general. In transport announcements, definite forms are very common because both speaker and listener know which train or service is being discussed.

Yes. Oppdaterer is the present tense of å oppdatere.

• å oppdatere = to update
• oppdaterer = updates / is updating

In Norwegian, the present tense can often cover both:

• a general present: updates
• an action happening now: is updating

So depending on context, this sentence could mean either:

• the train company updates the arrival time
• the train company is updating the arrival time

Yes, but the tone is a little different.

• på grunn av = because of
• i lys av = in light of / in view of

På grunn av sounds more directly causal and everyday.

I lys av sounds a bit more formal and slightly less direct. It often suggests taking something into consideration rather than simply stating a cause.

So:

• På grunn av togforsinkelsen oppdaterer togselskapet ankomsttiden. = Because of the train delay, the train company updates the arrival time.

• I lys av togforsinkelsen oppdaterer togselskapet ankomsttiden. = In light of the train delay, the train company updates the arrival time.

Both work, but the original is more formal.

Yes:

• Togselskapet oppdaterer ankomsttiden i lys av togforsinkelsen.

This may feel easier to learners because it follows the more familiar pattern:

• subject + verb + object + adverbial

The original sentence is not more advanced grammatically, but it uses fronting, which is very common in Norwegian.

Yes, very much so. Norwegian often combines nouns into one word.

Examples similar to this sentence:

• togstasjon = train station
• ankomsttid = arrival time
• billettkontroll = ticket inspection
• passasjerinformasjon = passenger information

A useful rule: in Norwegian, if English would often write train delay, arrival time, train company as separate words, Norwegian will often write them as one compound word.

Yes, it is normal modern Norwegian. Å oppdatere is widely used and fully natural in everyday and official language, especially for information, schedules, systems, and digital content.

Examples:

• Vi oppdaterer nettsiden. = We are updating the website.
• De oppdaterer rutetidene. = They are updating the timetables.
• Togselskapet oppdaterer ankomsttiden. = The train company updates/is updating the arrival time.

Yes, it is grammatical and understandable, especially in an informational or formal context.

That said, in real transport messages, Norwegian might sometimes use slightly more idiomatic wording such as:

• På grunn av togforsinkelsen er ankomsttiden oppdatert.
• Togselskapet har oppdatert ankomsttiden.
• Ankomsttiden er oppdatert som følge av togforsinkelsen.

But the original sentence is still a valid and natural sentence for a learner to study, especially for word order and compound nouns.