If your California DMV permit test is coming up soon and you need a quick refresher, this guide covers the most critical information that shows up repeatedly on the exam. These are the exact numbers, rules, and concepts that trip up most test-takers. Spend the next 10 minutes reviewing this material, and you'll be much better prepared.
Distance Requirements You Must Know
The California DMV test loves to ask about specific distances in feet. Here are the numbers that appear most frequently:
100 feet: You must signal at least 100 feet before making a turn or changing lanes. This gives other drivers enough time to react to your intentions.
500 feet: Dim your high beams when you're within 500 feet of oncoming traffic. This prevents blinding other drivers.
300 feet: Dim your high beams when you're following another vehicle within 300 feet. Your bright lights in their rearview mirror can be dangerous.
200 feet: This number comes up in two contexts. First, you can drive in a bike lane up to 200 feet before making a right turn. Second, you need 200 feet of visibility in both directions before making a U-turn.
You can find these exact requirements in the California Driver Handbook, which is available for free on the DMV website.
Default Speed Limits When There Are No Signs
California has default speed limits that apply even when there's no posted sign. These limits are based on the type of road and area you're driving through.
On most California highways, the speed limit is 65 mph unless otherwise posted. However, on two-lane undivided highways, the limit drops to 55 mph. This is an important distinction because many test questions focus on this difference.
In residential areas, business districts, and near schools or senior centers, the default speed limit is 25 mph. If you're driving through a neighborhood or downtown area without posted signs, assume it's 25 mph. Near playgrounds when children are present, the limit is also 25 mph.
The Basic Speed Law is something the DMV emphasizes heavily. This law states that you must never drive faster than is safe for current conditions, even if that means going below the posted speed limit. Weather, traffic, and road conditions can all require you to slow down. This concept appears on almost every version of the test.
Emergency Situations and How to Handle Them
The test includes questions about what to do in emergency situations. Knowing the correct sequence of actions is crucial.
Tire blowout: If you experience a blowout, grip the steering wheel firmly and maintain your speed initially. Don't slam on the brakes. Gradually ease off the gas and steer to a safe area off the road. Braking hard during a blowout can cause you to lose control.
Wheels off the pavement: If your wheels drift onto the shoulder, ease off the gas and brake gently. Wait until you have full control before steering back onto the pavement. Jerking the wheel back can cause you to overcorrect and swerve into traffic.
Stuck accelerator: If your gas pedal gets stuck, shift to neutral immediately. Then brake and pull off the road. Don't turn off the ignition while moving because you'll lose power steering and braking assistance.
The special driving situations chapter of the California Driver Handbook covers these scenarios in detail.
Lane Markings and What They Mean
Understanding lane markings is essential for passing the test. Yellow lines separate traffic moving in opposite directions, while white lines separate traffic moving in the same direction.
Double solid yellow lines: You cannot pass in either direction. Treat this as a barrier.
Solid yellow line on your side with a broken line on the other side: You cannot pass, but traffic on the other side can pass if safe.
Broken yellow line: Passing is allowed in either direction if it's safe to do so.
White broken lines: Lane changes are allowed.
Double solid white lines: Lane changes are not permitted. You'll see these near exits or in areas where lane changes would be dangerous.
Headlight Usage Requirements
Questions about when to use headlights appear on nearly every test. You must use headlights from 30 minutes after sunset to 30 minutes before sunrise. You also need them whenever visibility is less than 1,000 feet due to fog, rain, snow, dust, or smoke.
In foggy conditions, always use low beams, not high beams. High beams reflect off the fog and actually reduce visibility. This is a common trick question on the exam.
Remember to dim your high beams within 500 feet of oncoming traffic and within 300 feet when following another vehicle. These specific distances come up frequently.
Alcohol and Blood Alcohol Content
California has strict DUI laws, and the test covers them extensively. For drivers 21 and older, it's illegal to drive with a blood alcohol content of 0.08% or higher. For drivers under 21, the limit is effectively zero—any detectable amount of 0.01% or more results in penalties under the zero-tolerance law.
An important fact to remember: only time can lower your BAC. Coffee, cold showers, and exercise don't speed up the process. Your body metabolizes alcohol at a fixed rate of about one standard drink per hour.
The alcohol and drugs chapter has more details about California's DUI laws and penalties.
Child Safety Seat Requirements
California requires children to use a child safety seat or booster until they're at least 8 years old or at least 4 feet 9 inches tall. The back seat is the safest place for children 12 and under.
It's illegal to leave a child 6 years old or younger alone in a vehicle without supervision from someone at least 12 years old. This law exists because of the danger of heatstroke and other hazards.
Parking on Hills
When parking on a hill, you need to turn your wheels in the correct direction to prevent your car from rolling into traffic if the brakes fail.
Parking uphill with a curb: Turn your wheels away from the curb (toward the street). If the car rolls backward, the rear of the tire hits the curb and stops the car.
Parking downhill: Turn your wheels toward the curb. If the car rolls forward, the front tire hits the curb.
Parking uphill with no curb: Turn your wheels toward the edge of the road. If the car rolls, it will roll off the road instead of into traffic.
Reporting Requirements After a Collision
You must report a collision to the DMV within 10 days if it involves injury, death, or property damage over $1,000. This is different from reporting to your insurance company. The DMV wants a specific report filed directly with them.
If you sell or transfer a vehicle, you must report the sale to the DMV within 5 days. This protects you from liability if the new owner gets into an accident or receives tickets before transferring the title.
Final Test-Taking Tips
When you're actually taking the test, read each question carefully and make sure you understand what it's asking. Many questions are worded in a way that tests your attention to detail. Look for keywords like "must," "should," "except," and "not."
If you're unsure about an answer, eliminate the options that are clearly wrong first. Usually, you can narrow it down to two possibilities. When in doubt, choose the most cautious and safety-focused answer. The DMV wants to see that you prioritize safety over speed or convenience.
The test allows you to miss a few questions and still pass, but don't rely on that margin. If you've studied these key concepts and can recall the specific numbers without hesitation, you're in good shape.
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