Bussen kjører vestover.

Bussen is the definite form of buss, so it means the bus.

Norwegian often puts the definite article at the end of the noun:

• en buss = a bus
• bussen = the bus

So the sentence is talking about a specific bus, not just any bus.

Kjører is the present tense of the verb å kjøre.

• å kjøre = the infinitive, to drive / to go by vehicle
• kjører = drives / is driving

In Norwegian, the present tense often ends in -er.

It can cover several things that English often separates:

• drives
• is driving
• sometimes even a near-future idea, depending on context

Norwegian does not need a special progressive form like English is driving. So kjører can be used where English would choose either drives or is driving.

Context tells you which is meant.

Vestover is a directional adverb meaning westward or toward the west.

It is built from:

• vest = west
• -over = a directional ending, often giving the sense in the direction of

So vestover is not just the idea of west as a place or compass point; it specifically shows movement in that direction.

Because vestover clearly shows direction of movement.

Compare:

• i vest = in the west (location)
• mot vest = toward the west
• vestover = westward / heading west

With a verb of movement like kjører, vestover sounds very natural because it tells you where the motion is going.

Yes. Vestover is written as one word.

That is common in Norwegian with directional words:

• nordover = northward
• sørover = southward
• østover = eastward
• vestover = westward

This is the normal word order for a simple main clause:

subject + verb + adverbial

So:

• Bussen = subject
• kjører = finite verb
• vestover = adverbial of direction

Norwegian main clauses also follow the V2 rule, which means the finite verb is usually in the second position. That matters especially when something else comes first:

• Bussen kjører vestover.
• I dag kjører bussen vestover.

In the second example, I dag takes the first position, so kjører still stays second, and bussen moves after it.

Yes, it is grammatically possible, but it sounds more marked or stylistic.

Starting with vestover puts extra focus on the direction:

• Bussen kjører vestover. = neutral
• Vestover kjører bussen. = more emphasis on westward

A learner should usually start with Bussen kjører vestover, because it is the most natural neutral version.

Possibly, yes, but there is a nuance.

In Norwegian, gå is often used about transport in the sense of goes / runs:

• Bussen går klokka åtte. = The bus leaves/runs at eight.

Kjører focuses more on the vehicle actually driving or moving by road.

So:

• Bussen kjører vestover = the bus is driving westward
• Bussen går vestover = can sound more like the bus goes west / the route runs westward

Both can work, but kjører is a very direct match for a bus moving along.

The hardest part for many English speakers is kj.

A rough guide:

• kj is not a hard English k
• it is a soft sound, somewhat like the h in hue for some speakers, or the German ich sound

Very roughly, kjører sounds something like HYUR-er or KHYUR-er, but that is only approximate.

Also:

• ø is a vowel English does not really have
• the r is usually tapped or lightly rolled, depending on dialect

If your pronunciation is not perfect yet, that is normal — kj and ø are both common stumbling blocks.

Because Norwegian usually expresses definiteness by adding an ending to the noun.

So instead of saying:

• the bus

Norwegian says:

• buss + en = bussen

That is one of the biggest structural differences from English. The definite article is often attached to the end of the noun rather than standing alone in front of it.