Plaza tol itu dibuka sekarang.

In Malay, demonstratives usually come after the noun.

• plaza tol itu = that toll plaza
• rumah ini = this house

So the normal pattern is:

• noun + ini = this ...
• noun + itu = that ...

This is different from English, where this/that comes before the noun.

Itu most basically means that, but in real usage it can sometimes feel closer to the, especially when the speaker is referring to a specific thing already known in context.

So plaza tol itu can mean:

• that toll plaza
• or sometimes the toll plaza, depending on context

Malay often uses itu to point out something identifiable, not just something far away.

Dibuka comes from the root buka, which means open.

The prefix di- usually marks the passive voice in standard Malay.

So:

• buka = open
• dibuka = opened / is opened / is open, depending on context

In many sentences, di- + verb means that the thing receiving the action comes first.

Here:

• Plaza tol itu dibuka sekarang
  literally has the sense of That toll plaza is opened/open now

Malay often uses the passive when the important thing is the object or result, not who does the action.

In this sentence, the focus is on the toll plaza, not on the people or authority who opened it.

So dibuka is natural because it highlights the toll plaza itself.

If you wanted an active version, you would need to mention the doer, for example:

• Pihak berkuasa membuka plaza tol itu sekarang.
  = The authorities are opening that toll plaza now.

But that changes the focus.

It can potentially suggest either one, depending on context, but the most natural interpretation here is usually:

• is open now
• or has now been opened

Malay often does not separate these ideas as sharply as English does.

So dibuka sekarang may imply:

• the plaza was not open before, but now it is open
• or the opening is happening now

If you want to be clearer:

• sudah dibuka = has been opened / is now open
• sedang dibuka = is being opened
• buka sekarang in everyday speech can also mean open now

Malay usually does not need a verb like to be in many sentences.

English says:

• The toll plaza is open now

Malay can simply say:

• Plaza tol itu dibuka sekarang

This is very normal. Malay often leaves out words like is, are, am, especially when the meaning is clear from context.

Yes, especially in everyday or less formal usage.

Compare:

• Plaza tol itu dibuka sekarang — more standard, and can sound more formal or official
• Plaza tol itu buka sekarang — more conversational, focusing on the state open

So both may be heard, but dibuka can sound more like an official notice or announcement.

Yes. Plaza tol is a common term in Malay for a toll plaza or toll gate area.

It is made of:

• plaza = plaza
• tol = toll

Malay uses many borrowed words, and this is a normal example of that.

Malay word order is fairly flexible, but putting sekarang at the end is very natural.

• Plaza tol itu dibuka sekarang = natural
• Sekarang plaza tol itu dibuka = also possible, but it gives extra emphasis to now

So the end position is just a normal, neutral place for a time word.

This is a very useful distinction.

• dibuka usually suggests something has been opened or is opened by someone
• terbuka usually describes a state of being open

Examples:

• Pintu itu dibuka oleh Ali.
  = The door was opened by Ali.

• Pintu itu terbuka.
  = The door is open.

In your sentence, dibuka gives the idea that the toll plaza is now open for use, possibly after an action or decision. It can sound like an official opening.

A few possibilities are common, depending on what exactly you mean:

• Plaza tol itu tidak dibuka sekarang.
  = That toll plaza is not open now / is not being opened now

• Plaza tol itu belum dibuka.
  = That toll plaza has not been opened yet

• Plaza tol itu tidak buka sekarang.
  = a more conversational-style negative if you are using buka as a state

Very often, belum is the best choice if the idea is not yet open.

Usually yes, but not always.

• sekarang = now in general everyday usage
• kini = also now, but often a bit more formal or written

So you could also see:

• Plaza tol itu kini dibuka.

That sounds a little more formal or announcement-like. In ordinary speech, sekarang is the most common choice.