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На этой дороге две полосы, и по правой полосе лучше ехать медленнее.

На этой дороге две полосы, и по правой полосе лучше ехать медленнее.
On this road there are two lanes, and it’s better to go more slowly in the right lane.

Breakdown of На этой дороге две полосы, и по правой полосе лучше ехать медленнее.

и
and
на
on
дорога
the road
лучше
better
два
two
этот
this
ехать
to drive
по
in
медленнее
more slowly
полоса
the lane
правый
right
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Questions & Answers about На этой дороге две полосы, и по правой полосе лучше ехать медленнее.

Why is it На этой дороге and not В этой дороге?

Because the idea is “on this road,” not “inside” it.

  • на + prepositional is commonly used with surfaces/areas you’re “on”: на дороге (on the road), на улице (in the street), на мосту (on the bridge).
  • в + prepositional is used more for “inside” or within boundaries: в городе (in the city), в машине (in the car).
    So На этой дороге is the natural choice.
What case is этой дороге and how do I know?

It’s prepositional case (used here after на with a location meaning).

  • Dictionary form: дорога
  • Prepositional singular: (на) дороге
  • With the feminine demonstrative: (на) этой дороге
    You can often recognize the prepositional singular ending -е on many nouns: дороге, улице, машине.
Why is it две полосы and not две полосы́/две по́лосы with some different ending—or две полосы vs две полосе?

After 2, 3, 4 (and numbers ending in 2–4, except 12–14), Russian typically uses the noun in genitive singular:

  • одна полоса (nominative singular)
  • две/три/четыре полосы (genitive singular)
  • пять полос (genitive plural)

So две полосы is the standard numeral pattern, while полосе would be a different case (e.g., по полосе).

Why is it две and not два?

Because полоса is feminine.
Russian has two forms of “two”:

  • два = with masculine/neuter nouns: два дома, два окна
  • две = with feminine nouns: две полосы, две машины
Does полоса here mean a “stripe” or a “lane”?

In road context, полоса means a (traffic) lane (more fully полоса движения).
So две полосы = “two lanes.”
Yes, полоса can also mean “stripe/band,” but the road context makes “lane” the intended meaning.

Why does the sentence use по правой полосе instead of в правой полосе or на правой полосе?

With movement “along/within a route or line,” Russian often uses по + dative:

  • ехать по дороге = drive along the road
  • ехать по правой полосе = drive in/along the right lane

в would sound like being “inside” something, and на is less idiomatic for lanes. For lanes, по is the go-to preposition.

What case is по правой полосе?

Dative singular:

  • по (in the sense of “along/by/in (a lane)”) governs the dative.
  • полоса → dative singular полосе
  • adjective правая → dative singular feminine правой

So: по правой полосе.

Does по правой полосе mean “in the right lane” or “on the right side of the lane”?

It means in the right lane (i.e., using that lane).
If you wanted “on the right side (edge) of the lane,” you’d usually need extra wording, like по правому краю полосы (“along the right edge of the lane”).

Why is it лучше ехать медленнее—two comparatives together? Isn’t that redundant?

It’s normal and not redundant in Russian:

  • лучше = “it’s better / better to”
  • медленнее = “more slowly / slower”

Together they mean: “it’s better to drive slower.”
You could also say лучше ехать медленно (“better to drive slowly”), but медленнее emphasizes “slower than usual/than the other lane/than you might otherwise.”

Why is ехать an infinitive here? Where is the subject?

Russian often uses an infinitive after words like лучше, нужно, можно, нельзя to express general advice/necessity/permission:

  • Лучше ехать медленнее. = “It’s better to drive slower.”

The subject is generic/implicit: “one/you/we (drivers).” If you wanted to specify, you could add it:

  • Вам лучше ехать медленнее. = “You’d better drive slower.”
Why does Russian use медленнее (comparative) instead of the adverb медленно?

Both are possible, but the nuance changes:

  • медленно = simply “slowly” (describes speed without comparison)
  • медленнее = “slower” (implies a comparison: slower than before, than the left lane, than you might want to)

In traffic advice, медленнее is common because it suggests “reduce your speed.”

What’s the purpose of the comma before и?

It separates two independent clauses: 1) На этой дороге две полосы (“This road has two lanes.”)
2) по правой полосе лучше ехать медленнее (“in the right lane it’s better to drive slower.”)

When и connects two full clauses (each could stand as a sentence), Russian typically uses a comma.

Could the word order be different, like Лучше ехать медленнее по правой полосе? Would that change the meaning?

Yes, word order is flexible, and the core meaning stays the same. Changes mainly affect emphasis:

  • по правой полосе лучше ехать медленнее emphasizes the right lane as the context.
  • лучше ехать медленнее по правой полосе can sound like emphasizing the advice first (“better to drive slower”) and then specifying where.

Russian often puts the “setting” (по правой полосе) earlier when it frames the recommendation.