يصطدم السائق الآخر ويوثق التصادم.

Because Arabic very often uses verb–subject order, especially in Modern Standard Arabic.

So:

• يصطدم السائق الآخر = The other driver collides / crashes
• Literally: collides the other driver

This word order is completely normal in Arabic.
If you put the subject first, you could also say:

• السائق الآخر يصطدم

That is also grammatical, but it shifts the style a bit. The version with the verb first is very common in standard written Arabic.

In Arabic, when the verb comes before the subject, the verb is often kept in the singular form, even if the subject is fully expressed after it.

Here the subject is:

• السائق الآخر = the other driver

That subject is singular masculine, so يصطدم is singular masculine too.

This is one of the patterns English speakers often need to get used to:

• Verb first → the verb is commonly singular
• Subject first → the verb usually agrees more fully

In this sentence, though, the subject is singular anyway, so the form is exactly what you would expect.

يصطدم means he collides, he crashes, or he runs into.

It comes from the root:

• ص د م

A related basic idea is impact / collision / shock.

The dictionary form is:

• اصطدم = to collide / crash
• يصطدم = he collides / is colliding

This verb is commonly used for accidents, vehicles, or things striking each other.

Examples:

• اصطدمت السيارة بالجدار = The car crashed into the wall
• يصطدم السائق بسيارة أخرى = The driver collides with another car

Not necessarily. يصطدم can be used intransitively, meaning the collision is mentioned without stating the thing hit.

So:

• يصطدم السائق الآخر = The other driver crashes / is involved in a collision

If you want to say what he hit, Arabic often uses بـ:

• يصطدم بسيارة = he collides with a car
• يصطدم بالحاجز = he crashes into the barrier

So the sentence is fine even without naming the other object involved in the collision.

Because السائق الآخر means the other driver, while سائق آخر means another driver.

This is an important distinction:

• سائق آخر = another driver
• السائق الآخر = the other driver

Also, الآخر is acting like an adjective here, and in Arabic adjectives usually match the noun in:

• definiteness
• gender
• number
• case

So because السائق is definite, الآخر is also definite:

• السائق الآخر

Yes. In Arabic, adjectives normally come after the noun they describe.

So:

• السائق الآخر = literally the driver the-other

This is the normal Arabic order:

• noun first
• adjective second

And the adjective agrees with the noun. Here both words are masculine singular and definite.

Compare:

• رجل طويل = a tall man
• الرجل الطويل = the tall man
• سيارة جديدة = a new car
• السيارة الجديدة = the new car

ويوثق means and he documents.

It is made up of:

• و = and
• يوثق = he documents / records

The verb comes from وثّق, which often means:

• to document
• to record
• to certify
• to authenticate

In this context, يوثق التصادم most naturally means:

• he documents the collision
• he records evidence of the crash

For example, this could mean taking photos, filing a report, or otherwise creating official documentation.

Yes. They come from the same root:

• و ث ق

This root has meanings connected with reliability, firmness, and documentation.

Related words include:

• وثيقة = document
• توثيق = documentation
• يوثق = he documents

So if you know وثيقة, it can help you remember يوثق.

Yes. The و simply means and, and the subject is understood to continue.

So:

• يصطدم السائق الآخر = the other driver collides
• ويوثق التصادم = and documents the collision

The understood subject of يوثق is the same person unless Arabic introduces a new subject.

So the full sense is:

• The other driver collides and documents the collision

Arabic often avoids repeating the subject when it is already clear.

التصادم means the collision.

It is definite because the sentence is referring to a specific collision: the one just mentioned or understood from context.

Compare:

• تصادم = a collision
• التصادم = the collision

In English, we often also use the in this kind of situation:

• documents the collision

So the definiteness is very natural here.

Yes. التصادم is a verbal noun (often called a masdar) related to the verb اصطدم / يصطدم.

So:

• اصطدم = he collided
• يصطدم = he collides
• التصادم = the collision / colliding

This is very common in Arabic: a verb and a related noun are built from the same root.

English does this too:

• to collide
• collision

So in this sentence you get both:

• the action as a verb: يصطدم
• the event as a noun: التصادم

They are in the non-past form, often called the present or imperfect.

In Arabic, this form can express:

• present action
• habitual action
• future action, depending on context
• step-by-step narration or instructions

So يصطدم and يوثق can mean:

• collides / is colliding
• documents / is documenting

The exact English translation depends on context.
If this comes from instructions, reporting language, or a scenario description, English may still translate it as a simple present.

A fully vocalized version would be:

• يَصْطَدِمُ السَّائِقُ الآخَرُ وَيُوَثِّقُ التَّصَادُمَ

This helps show the grammar more clearly:

• يَصْطَدِمُ = he collides
• السَّائِقُ = the driver (subject, nominative)
• الآخَرُ = the other (adjective matching the subject)
• وَيُوَثِّقُ = and he documents
• التَّصَادُمَ = the collision (object, accusative)

In normal everyday Arabic writing, these vowel marks are usually omitted.

Yes, depending on context.

Related words include:

• حادث = accident
• اصطدام = collision / crashing
• تصادم = collision

The exact nuance can vary:

• حادث is broader and often means accident
• تصادم emphasizes collision
• اصطدام is also widely used for collision/impact

In many real-world contexts, more than one of these could appear. The sentence you have uses التصادم, which focuses specifically on the collision itself.

Grammatically, it is understandable and well-formed.

It means something like:

• The other driver crashes and documents the collision

Whether it feels fully natural depends on context. In practical real-world Arabic, people might also phrase things in other ways, especially if they want to be very explicit about documenting the accident, such as by saying someone takes photos, files a report, or records the accident.

But from a learning point of view, this sentence is useful because it shows several important Arabic patterns clearly:

• verb-first word order
• adjective after noun
• definite adjective agreement
• a second verb joined by و
• a verbal noun related to the verb