Rozcestník je na rozcestí.

Rozcestník is the signpost or direction sign itself.

Rozcestí is the crossroads, fork, or place where roads/paths split.

So in the sentence:

• Rozcestník = the thing
• je = is
• na rozcestí = at the crossroads

They are closely related words.

Both come from the idea of cesta = road / path.

• roz- suggests splitting apart or branching
• rozcestí = a place where paths split
• -ník often makes a noun for a thing associated with something

So rozcestník is basically the thing connected with a crossroads — a signpost found there.

Czech does not use articles the way English does.

So rozcestník can mean:

• a signpost
• the signpost

And rozcestí can mean:

• a crossroads
• the crossroads

The exact meaning depends on context.

Czech prepositions do not match English one-for-one.

With many locations, Czech naturally uses na, even when English uses at. So:

• na rozcestí = at the crossroads
• na rohu = at the corner
• na křižovatce = at the intersection

So you should learn na rozcestí as the normal Czech expression.

Here it is locative singular, because the sentence describes a location, not movement:

• Rozcestník je na rozcestí. = The signpost is at the crossroads.

With movement, na takes the accusative:

• Jdu na rozcestí. = I am going to the crossroads.

The tricky part is that for rozcestí, the locative and accusative look the same.

Because rozcestí is a neuter noun of the -í type, and many of its singular case forms are identical.

So the form rozcestí can be:

• nominative
• accusative
• genitive
• dative
• locative

That is why you do not see an obvious ending change here.

You can often spot the case more clearly when there is an adjective:

• na hlavním rozcestí = at the main crossroads

The adjective hlavním shows that this is locative.

Yes, rozcestí is singular.

That can feel strange to English speakers because crossroads looks plural in English, even when it refers to one place.

In Czech:

• to rozcestí = this one crossroads / junction

If you want the plural, you would use rozcestí again, with plural agreement shown elsewhere in the sentence.

Rozcestník is in the nominative singular because it is the subject of the sentence.

It is a masculine inanimate noun:

• ten rozcestník

So the sentence structure is:

• Rozcestník = subject
• je = verb
• na rozcestí = location phrase

In a normal sentence like this, yes, you need je.

• Rozcestník je na rozcestí. = correct

Czech often drops subject pronouns like já, ty, on, because the verb form already shows the person. But it does not normally drop the main verb to be in an ordinary sentence like this.

You might see omission only in headlines, labels, notes, or very compressed style.

Yes. Czech word order is flexible.

For example:

• Rozcestník je na rozcestí. = neutral
• Na rozcestí je rozcestník. = puts more emphasis on the location

Both are grammatical, but they sound slightly different in focus.

A rough guide:

• subject first = more neutral
• location first = emphasizes where something is

Yes, and that can sound very natural.

• je = is / is located
• stojí = stands

So:

• Rozcestník je na rozcestí. = neutral statement of location
• Rozcestník stojí na rozcestí. = emphasizes that the signpost is physically standing there

Both are good; je is just simpler and more basic.

It can also be figurative, just like English at a crossroads.

For example:

• Je na rozcestí života. = He/She is at a crossroads in life.

So the phrase can describe:

• a real physical crossroads
• an important decision point in life

The main pronunciation points are:

• Czech stress is usually on the first syllable of each word.
• c is pronounced like ts.
• je sounds roughly like ye.

So the sentence has stress like this:

• ROZcestník je na ROZcestí

You do not need to force English-style sentence stress too much; just keep the first-syllable stress on the words.