Na pješačkom prijelazu uvijek čekamo zeleno svjetlo.

Because Croatian uses the preposition na with the locative case to mean on / at certain places or surfaces.

Here, na pješačkom prijelazu means at the pedestrian crossing or on the crosswalk.

• na = on / at
• pješačkom prijelazu = locative singular of pješački prijelaz

So the basic pattern is:

• pješački prijelaz = a pedestrian crossing
• na pješačkom prijelazu = at the pedestrian crossing

This is very natural Croatian usage.

Because after na in this meaning, the noun phrase goes into the locative singular.

The dictionary form is:

• pješački prijelaz = pedestrian crossing

But in the sentence, both the adjective and the noun must change to match the locative singular:

• pješački → pješačkom
• prijelaz → prijelazu

This is called agreement: the adjective must match the noun in gender, number, and case.

So:

• nominative: pješački prijelaz
• locative: na pješačkom prijelazu

Čekamo is the 1st person plural present tense of čekati, meaning we wait.

So:

• čekam = I wait
• čekaš = you wait
• čeka = he/she/it waits
• čekamo = we wait
• čekate = you all / formal you wait
• čekaju = they wait

In this sentence, čekamo means we wait.

Croatian often uses this kind of general we in instructions or rules, similar to English sentences like:

• We stop at red lights
• We always wait for green

It can sound like a general statement about proper behavior, not necessarily only about a specific group.

Because zeleno svjetlo is the direct object of čekamo, so it is in the accusative case.

The noun svjetlo is neuter singular, and for many neuter nouns, the nominative and accusative forms are the same.

So:

• nominative: zeleno svjetlo
• accusative: zeleno svjetlo

That is why it looks unchanged.

The adjective also agrees with the noun:

• zeleno matches svjetlo
• both are neuter singular accusative

Because Croatian čekati usually takes a direct object without a preposition.

In English, you say:

• wait for the green light

In Croatian, you simply say:

• čekati zeleno svjetlo

So Croatian does not need a separate word for for here.

More examples:

• Čekam autobus. = I’m waiting for the bus.
• Čekamo prijatelja. = We’re waiting for our friend.
• Čekaju vlak. = They’re waiting for the train.

This is a very common difference between English and Croatian.

Uvijek means always.

It tells you that the action happens regularly or as a rule:

• čekamo = we wait
• uvijek čekamo = we always wait

Croatian word order is fairly flexible, so uvijek can sometimes move around, but the neutral order here is very natural:

• Na pješačkom prijelazu uvijek čekamo zeleno svjetlo.

You could also hear things like:

• Uvijek čekamo zeleno svjetlo na pješačkom prijelazu.

That is also understandable, but the original version sounds very natural and well balanced.

Yes, basically.

Pješački prijelaz is the normal Croatian term for a pedestrian crossing, which in English could be called:

• crosswalk in American English
• zebra crossing in British English, depending on context

Literally:

• pješak = pedestrian
• pješački = pedestrian / for pedestrians
• prijelaz = crossing

So pješački prijelaz literally means pedestrian crossing.

Because the sentence is specifically talking about the green light, not the traffic light as an object.

• semafor = traffic light
• zeleno svjetlo = green light

In English too, we usually say wait for the green light, not wait for the green traffic light.

So Croatian naturally says:

• čekati zeleno svjetlo

If you used semafor, the meaning would shift a bit. For example:

• Vidim semafor. = I see the traffic light.
• Čekamo zeleno svjetlo. = We’re waiting for the green light.

That depends on the standard and region.

In standard Croatian, the preferred form is:

• prijelaz

In some other regional or closely related varieties, you may hear:

• prelaz

For standard Croatian, especially in learning materials, use:

• pješački prijelaz

So the sentence should be:

• Na pješačkom prijelazu uvijek čekamo zeleno svjetlo.

A few parts may be tricky for English speakers:

• pj in pješačkom: say a p followed quickly by ye
• š sounds like sh in shoe
• č sounds roughly like ch, but more sharply than English ch
• j is like English y

So approximately:

• pješačkom ≈ pye-SHACH-kom
• prijelazu ≈ prye-YE-la-zoo

Also:

• svjetlo begins with svj, which can feel difficult at first
• j again sounds like y, so svjetlo is roughly svyet-lo

These are only rough guides, but they can help at first.

Yes, but it would change the tone.

• čekamo zeleno svjetlo = we wait for the green light
• moramo čekati zeleno svjetlo = we have to wait for the green light

The original sentence sounds like a general rule or instruction stated in a calm, matter-of-fact way.

Adding moramo makes it more explicit and stronger:

• Na pješačkom prijelazu uvijek moramo čekati zeleno svjetlo.

That means At the pedestrian crossing, we must always wait for the green light.

Both are correct, but the original is simpler and very natural.

Yes. Croatian often drops subject pronouns when they are already clear from the verb ending.

Here:

• čekamo already tells you the subject is we

So Croatian normally says:

• čekamo

not

• mi čekamo

You can add mi for emphasis, contrast, or clarity, but it is not necessary.

For example:

• Mi čekamo zeleno svjetlo, a oni ne čekaju. = We wait for the green light, but they don’t.

In the original sentence, leaving out mi is completely normal.