Navigationen viser, at der er vejarbejde foran os, så vi bør dreje tidligere.

The navigation shows that there is road work ahead of us, so we should turn earlier.

Breakdown of Navigationen viser, at der er vejarbejde foran os, så vi bør dreje tidligere.

• være: to be
• vi: we
• der: there
• så: so

Questions & Answers about Navigationen viser, at der er vejarbejde foran os, så vi bør dreje tidligere.

Why does Navigationen end in -en?

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

• navigation = navigation
• navigationen = the navigation

So Navigationen viser ... means The navigation shows ...

This is very common in Danish:

• bil → bilen = the car
• vej → vejen = the road

Here Navigationen probably refers to the GPS or navigation system that is already known from the situation.

What is the function of at in viser, at der er ...?

At here means that and introduces a subordinate clause.

So:

• Navigationen viser = The navigation shows
• at der er vejarbejde foran os = that there is roadwork ahead of us

This is very similar to English:

• He says that ...
• The app shows that ...

In everyday English, that is often omitted, but in Danish at is very commonly kept in sentences like this.

Why does Danish use der er here instead of det er?