Sürücü ister parkmetreyi ister trafik işaretini inceleyebilir.

In this sentence, ister ... ister ... introduces two alternatives. It means something like:

• either ... or ...
• whether ... or ...

So ister parkmetreyi ister trafik işaretini presents two possible things the driver may examine.

Because this is a fixed Turkish pattern:

• ister X ister Y

Both parts are marked with ister. Turkish does not normally say this pattern with only one ister.

So:

• ister parkmetreyi ister trafik işaretini

is the natural way to say either the parking meter or the traffic sign / whether the parking meter or the traffic sign.

It is the same form historically, but here it functions differently.

• As a normal verb, ister means he/she/it wants
• In ister ... ister ..., it works as part of a conjunction-like structure meaning either ... or ... / whether ... or ...

So in this sentence, you should not read ister as wants.

Those endings mark the definite direct object in Turkish. This is often called the accusative.

The verb incelemek takes an object, and here both alternatives are treated as specific objects:

• parkmetreyi
• trafik işaretini

Very roughly:

• parkmetre = parking meter
• parkmetreyi = the parking meter / that parking meter, as the object
• trafik işareti = traffic sign
• trafik işaretini = the traffic sign, as the object

Because both nouns are possible objects of inceleyebilir, both appear in the accusative.

Because trafik işareti is the basic noun phrase, and in this sentence it is the direct object, so it takes the accusative ending.

But there is one extra detail: trafik işareti is a common Turkish noun-compound pattern. The second noun already has a built-in ending:

• trafik işareti = traffic sign

When you add the accusative to this kind of form, you get:

• trafik işareti + ni → trafik işaretini

That n is a buffer consonant.

So:

• trafik işareti = traffic sign
• trafik işaretini = the traffic sign, as the object

The noun parkmetre ends in a vowel. When the accusative ending is added to a vowel-final noun, Turkish inserts a buffer y:

• parkmetre + i → parkmetreyi

This y is just there to connect the sounds smoothly.

The same thing happens in many Turkish words that end in a vowel.

İnceleyebilir comes from:

• incele- = examine, inspect
• -(y)ebil- = can / be able to
• -ir = aorist-style ending often used in general statements

So inceleyebilir means:

• can examine
• may examine
• is able to examine

In this sentence, it expresses possibility or ability, not a completed action.

Because the verb stem incele- ends in a vowel, and the next suffix begins with a vowel sound. Turkish often inserts a buffer y between vowels.

So the structure is:

• incele- + yebil- + ir → inceleyebilir

That y is not part of the core meaning; it is there for pronunciation and smooth connection.

Because Turkish normally places the main verb at the end. This is one of the most basic word-order differences from English.

So the structure here is roughly:

• Sürücü = subject
• ister parkmetreyi ister trafik işaretini = object alternatives
• inceleyebilir = verb

This final-verb position is very natural in Turkish.

Yes, a sentence like this is possible:

• Sürücü parkmetreyi ya da trafik işaretini inceleyebilir.

That would also mean something like The driver can examine the parking meter or the traffic sign.

But ister ... ister ... gives a slightly more explicit either/or or whether/or feeling. It highlights the alternatives more clearly.

So the two are similar, but ister ... ister ... is the more structured contrastive pattern.

Turkish has no articles like a and the. So sürücü can mean:

• the driver
• a driver
• sometimes even drivers in general

The exact interpretation depends on context.

So without more context, sürücü is simply driver, and English has to choose a or the based on the situation.