La prueba fotográfica permite comprobar la infracción de tráfico.

Because prueba is a feminine noun in Spanish, so it takes the feminine article la.

• la prueba = the proof / the evidence / the test
• fotográfica must also be feminine to agree with prueba

So:

• la prueba fotográfica
• not el prueba fotográfica

This is standard adjective agreement in Spanish: the article and adjective must match the noun in gender and number.

Literally, it means photographic proof or photographic evidence.

In context, it usually refers to a photo used as evidence, for example from:

• a speed camera
• a traffic camera
• a red-light camera

So although prueba can sometimes mean test, here it clearly means proof or evidence.

In Spanish, adjectives often come after the noun, unlike in English.

So:

• prueba fotográfica = photographic proof
• literally: proof photographic

That is the normal order in Spanish. Putting the adjective after the noun sounds natural and neutral here.

Because permitir is a verb that is commonly followed by an infinitive.

Structure:

• permitir + infinitive
• permite comprobar = allows [someone] to verify/check/prove

This works much like English:

• It allows us to verify...
• It makes it possible to verify...

Other examples:

• Esto permite entender mejor el problema.
• La aplicación permite pagar con tarjeta.

So comprobar stays in the infinitive because it depends on permite.

Because Spanish does not always need a separate word equivalent to English to before an infinitive.

In English:

• allows [someone] to verify

In Spanish:

• permite comprobar

The infinitive comprobar already does the job. Spanish often uses a direct infinitive after certain verbs without adding another word.

Here comprobar means something like:

• to verify
• to confirm
• to establish
• sometimes to prove

In this sentence, the idea is that the photographic evidence makes it possible to confirm that the traffic offence happened.

So a natural English translation might vary depending on context:

• allows the traffic offence to be verified
• makes it possible to confirm the traffic violation
• serves to prove the traffic offence

Spanish often uses the definite article more than English does.

Here, la infracción de tráfico refers to the offence/violation in question, so the article sounds natural.

• la infracción de tráfico = the traffic offence / the traffic violation

Without the article, the sentence would sound less complete in this context.

Because infracción is the normal legal/administrative word for an offence or violation in this kind of context.

• infracción de tráfico = traffic offence / traffic violation

Using violación here would sound wrong, because violación usually means rape in modern Spanish, not a legal violation in general.

So for traffic law, infracción is the correct and natural word.

De tráfico means related to traffic or of traffic.

So:

• infracción de tráfico = traffic offence
• literally: offence of traffic

Spanish often uses de + noun where English uses a noun directly as an adjective.

Compare:

• accidente de tráfico = traffic accident
• señal de tráfico = traffic sign
• normas de tráfico = traffic rules

They are there to show the correct stress.

• fotográfica → stress on grá
• infracción → stress on the last syllable cción
• tráfico → stress on trá

These accents are required by Spanish spelling rules. They are not optional.

They also help distinguish pronunciation clearly, which is especially useful for learners.

It could be written that way grammatically, but the meaning changes slightly.

• La prueba fotográfica permite comprobar la infracción de tráfico
  = the photographic evidence allows one to verify the offence

• La prueba fotográfica comprueba la infracción de tráfico
  = the photographic evidence proves/verifies directly the offence

The original sentence is a bit more formal and cautious. It says the evidence makes verification possible, rather than stating as directly that it proves the offence by itself.

Yes. It sounds formal, administrative, and legal, which fits traffic enforcement language.

Words like these make it sound official:

• prueba fotográfica
• permite comprobar
• infracción de tráfico

In everyday speech, a native speaker might use something simpler depending on context, but this sentence is very natural in official notices, legal explanations, or administrative documents.

Yes. Both are good translations depending on the variety of English and the context.

Possible translations:

• traffic offence
• traffic violation
• traffic infraction

In British-style legal English, offence is often very natural. In American English, violation is often especially common.