California Driver License Exam Prep
Take a free diagnostic for the California knowledge test. DLStudy finds the rules you misunderstand, gives you focused practice, and links explanations to the official California driver handbook. Native-language help is available when English terminology gets in the way.
California DMV · 36-question knowledge test
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All 50 states · Official-handbook references · English, 中文, Español, Русский
What a missed question actually gets you
One question, start to finish. This is the loop the diagnostic runs on every weak spot it finds.
- 1
You pick the tempting answer
Right-of-way · Left turns
You are turning left at an intersection. A car coming toward you has its right turn signal on. You should:
Turn left — the oncoming car is turning away from your path.Your answerWait until the oncoming car has actually begun its turn.Correct answerSound your horn and complete the turn quickly. - 2
We name the misconception
Why that answer is tempting
A turn signal looks like a promise. It reads as information about what the other driver will do, so yielding feels unnecessary — you are being efficient, not careless.
The rule you misunderstood
A signal shows intent, not action. Drivers leave signals on from a previous turn, or change their mind mid-approach. You keep the duty to yield until the car is visibly committed to its turn.
- 3
The handbook backs it up
From the official handbook
When turning left, yield the right-of-way to any approaching vehicle that is close enough to be a hazard. Do not rely on a turn signal alone — wait until the other vehicle has begun its turn.
Right-of-Way Rules — Left Turns
- 4
Your map updates
Your mastery map updates
Right-of-wayUntestedWeakNow ranked against your other topics, so study time goes where it saves the most.
- 5
You drill the weak rule
A focused drill is queued
The same rule, reworded across new situations — unprotected left turns, oncoming cyclists, a signal left on by mistake — until you recognize the rule instead of the question.
Find my weak spots — free