Στο σταυροδρόμι έχει τόση κίνηση που προτιμώ να περιμένω λίγο πριν περάσω.

Στο is the contracted form of σε + το.

• σε = in / at / to
• το = the (neuter singular)

So στο σταυροδρόμι literally means at the intersection. This kind of contraction is standard in Modern Greek.

Το σταυροδρόμι means crossroads, intersection, or junction.

In everyday Greek, it usually refers to a place where roads cross. So in this sentence, στο σταυροδρόμι is best understood as at the intersection.

Yes, έχει literally means has, but in everyday Greek it is also very commonly used impersonally to mean there is / there are.

So:

• έχει κίνηση = there is traffic / it’s busy
• not literally it has traffic in English

This is a very common Greek pattern.

Literally, κίνηση means movement. But in traffic and road contexts, it means traffic.

So:

• έχει κίνηση = there is traffic
• πολλή κίνηση = a lot of traffic
• τόση κίνηση = so much traffic

Because τόση has to agree with κίνηση.

The word τόσος / τόση / τόσο changes form depending on the gender of the noun:

• masculine: τόσος
• feminine: τόση
• neuter: τόσο

Since κίνηση is feminine, Greek uses τόση.

This is a very common structure meaning so much ... that or such ... that.

So:

• τόση κίνηση που... = so much traffic that...

Here που introduces the result of the heavy traffic: there is so much traffic that I prefer to wait a bit.

After προτιμώ (I prefer), Greek normally uses να + verb to express to do something.

So:

• προτιμώ να περιμένω = I prefer to wait

Modern Greek does not normally use an infinitive the way English does, so να + verb often does the job that English to + verb does.

This is about aspect, which is very important in Greek.

• να περιμένω uses the imperfective form, which suits an action seen as a process or duration: to wait, to be waiting
• περάσω uses the perfective form, which suits a single complete event: to cross once

So the sentence presents:

• waiting as something that lasts for a little while
• crossing as one complete action

That is exactly the contrast Greek likes to make here.

Here λίγο means a little, a bit, or for a little while.

It works adverbially in this sentence, modifying περιμένω:

• να περιμένω λίγο = to wait a bit

So it is not describing a noun here; it is describing the action.

After πριν (before), Greek commonly uses the verb directly in the subjunctive-type form, without να.

So:

• πριν περάσω = before I cross

That is the normal pattern here. You may sometimes hear πριν να in speech, but πριν περάσω is perfectly standard and natural.

Because περάσω presents the crossing as one complete action.

• περάσω = cross once / get across
• περνάω would suggest something more ongoing, repeated, or less bounded

In this sentence, the speaker means: I’ll wait a bit before I make the crossing, so the perfective form περάσω fits better.

Greek often leaves out subject pronouns because the verb ending already shows the person.

Here:

• προτιμώ = I prefer
• περάσω = I cross / I will cross in this dependent structure

So Greek does not need εγώ unless the speaker wants extra emphasis. The subject is understood from the verb forms.