Ace the DMV Test: Your Guide to Turning, Merging, and Passing

Turns, Merging, and Passing: What the DMV Test Really Asks

If you're studying for the California DMV written knowledge test, the turns, merging, and passing section can feel like a grab bag of rules. The good news: every question comes straight from the handbook, the correct answer is always there, and the other two choices are usually obviously wrong or simply not appropriate. This guide gives you the plain-English version of the rules and shows how the test tends to phrase them.

The core rule to anchor everything else: signal 100 feet before a turn, turn from the lane closest to your direction of travel, and never pass on a curve or hill where you cannot see.

Turning Positions

Turning positions tell you which lane to start from and which lane to finish in. For a right turn, start from the far right lane or the right edge of the road and end in the far right lane. For a left turn, start from the lane closest to the center line, or from a designated left-turn lane, and end in the lane closest to the center line.

The test may phrase it like this: "You are turning left onto a two-way street. Which lane should you enter?" The right answer is the lane nearest the center line going your direction. A common wrong answer is the furthest right lane, which is not appropriate for a left turn. For right turns, the equivalent question asks which lane you enter, and the answer is the far right lane, not the middle one.

If you are turning from a one-way street onto another one-way street, you still turn from the lane closest to your direction of travel. Use your mirrors, turn your head quickly to check blind spots, slow down, and signal at least 200 feet before the turn on a city street.

Turns on Red

A steady red light means stop before the limit line, crosswalk, or intersection. In California, you may turn right on a red after stopping, unless a sign says otherwise, and you may turn left on a red only when you are turning from a one-way street onto another one-way street.

Worked scenario: You are stopped at a red light on a one-way street and want to turn left onto another one-way street. After stopping and yielding to pedestrians and traffic, you may make the turn unless a sign prohibits it. The test often uses wording like "When can you turn left on a red light?" The correct answer is "from a one-way street onto a one-way street."

U-Turns

A U-turn lets you turn around and go the opposite direction. They are legal in many places, but not everywhere. You should not make a U-turn in heavy traffic, on a curve, or near the top of a hill where other drivers cannot see you. Look in all directions before and during the turn because traffic can appear within seconds.

A typical test phrasing: "Where should you avoid making a U-turn?" The right answer is a place where you cannot be seen, such as a curve or hill. Practice U-turns on a wide residential street with little traffic before trying them in busier conditions.

Freeway Entry and Exit

Freeway driving is faster than residential driving, so plan ahead. When entering, be in the proper lane on the on-ramp, be at or near the speed of traffic, use your mirrors and turn signals, and merge into a space large enough for your vehicle. Do not stop on the on-ramp unless absolutely necessary.

Worked scenario: You are on a short on-ramp and traffic is moving quickly. The correct move is to build speed, signal, check mirrors and blind spots by turning your head, and merge when safe. Choosing to stop and wait for a big gap is the wrong answer on a freeway entry question.

When exiting, signal early, move into the exit lane at the proper speed, and watch for slower traffic ahead. If you miss your exit, continue to the next one rather than backing up or stopping.

Passing Restrictions

Passing is allowed only when it is safe and legal. Do not pass if you are approaching a hill or curve and cannot see whether traffic is coming, within 100 feet of an intersection, bridge, tunnel, or railroad crossing, or when a sign or solid line tells you not to. Never pass on the left if the driver ahead is signaling a left turn, and never drive off the paved or main-traveled part of the road to pass.

Worked scenario: You are behind a car that has its left turn signal on. The test asks whether you may pass on the left. The answer is no; wait for the driver to turn. If a vehicle is passing you, maintain your lane position and speed and let it pass.

Quick Self-Check

1. You are turning left from a two-way street onto another two-way street. Which lane should you enter? A. The far right lane B. The lane closest to the center line going your direction C. Any lane that is open

2. When may you turn left on a red light? A. Never B. From a one-way street onto a one-way street C. Whenever no cars are coming

3. You are approaching a curve and cannot see oncoming traffic. May you pass? A. Yes, if the road looks clear B. No, you should not pass where you cannot see C. Yes, if you flash your headlights

Answers: 1-B, 2-B, 3-B.

Key Takeaways

• Signal 100 feet before a turn and turn from the lane closest to your direction of travel.
• Right on red is allowed after a stop unless a sign says otherwise; left on red only from a one-way to a one-way.
• Avoid U-turns where you cannot be seen or in heavy traffic.
• Merge onto freeways at or near traffic speed and never stop unless absolutely necessary.
• Never pass on a curve or hill where you cannot see, and never pass a driver signaling a left turn.

Ready for more? Practise with Mia at lastdmv.com to build confidence one question at a time.

Frequently asked questions

Can I turn right on a red light in California?

Yes, after a complete stop, unless a sign prohibits it. You must yield to pedestrians and traffic.

When can I turn left on a red light?

Only when turning from a one-way street onto another one-way street, after stopping and yielding, unless a sign says otherwise.

Can I pass a car that is signaling a left turn?

No. Never pass on the left if the driver ahead is signaling a left turn.