This glossary defines 38 terms California families meet on the way to a license, in the order they come up. Each definition follows the wording of the California Driver's Handbook, a DMV page, a DMV form or the Vehicle Code.
Course and certificate terms
These terms cover the driver education course and the proof that it is done. A teen under 18 needs the course certificate before applying for a permit.
| Term | Plain definition | Learn more |
|---|---|---|
| Driver education (DE) | Instruction in traffic laws, road safety, driver responsibilities and avoiding accidents. It must be 30 hours of classroom instruction, or a home study or internet program that meets the same requirements. | Education vs. training |
| Online driver education | A home study or internet training program used in place of classroom driver education. The DMV says it must meet the same requirements as classroom instruction. | The online course |
| Certificate of Completion of Driver Education | Proof that a student finished driver education, given by the DMV-licensed driving school. Teens bring it when they apply for the permit. | DL 400C explained |
| DL 400B | The DMV form a licensed driving school uses as the "Certificate of Completion of Driver Education." | Education vs. training |
| DL 400C | The DMV's "Certificate of Completion of Non-Classroom Driver Education," the certificate for online or home-study courses. Traffic Tutors mails it as a paper original by USPS. | DL 400C explained |
| DL 400D | The DMV's "Certificate of Completion of Behind-The-Wheel Training," given after the 6 hours of driver training. The teen brings it to the drive test. | Education vs. training |
| Integrated DE/DT program | A program that mixes classroom driver education with behind-the-wheel training. A minor enrolled in one may show a certificate of enrollment instead of a completion certificate at the permit visit. | Education vs. training |
| Licensed driving school | A driving school licensed and bonded by the DMV. Driver education and driver training are offered at these schools and at some high schools. | Provider license |
| Occupational License Lookup (OLL) | The DMV's online tool for checking the license status of businesses, including driving schools. You can search by business name, city, ZIP code or license number. | Provider license |
| E-number license | A driving school's DMV license number, such as E0271 for Stallion School of Driving or E0159 for Traffic Tutors. Enter it on the Occupational License Lookup to check the school. | Provider license |
Permit terms
These terms come up at the permit visit, which a teen can make at 15½. The permit is the first document that allows practice on public roads.
| Term | Plain definition | Learn more |
|---|---|---|
| Instruction permit (learner's permit) | The permit for people who are learning to drive and working toward a license. The DMV uses both names. | Permit and license dates |
| Provisional instruction permit | The DMV's name for the permit issued to an applicant under 18. It must be held for six months before the drive test. | Teen permit timeline |
| Driver's License or ID Card Application | The DMV application for a permit or license. A parent or guardian signs it for an applicant under 18. | Permit visit checklist |
| Financial responsibility | Being able to pay for damage from a collision, which most Californians cover with insurance. Parents who sign a minor's application accept financial responsibility for that minor. | Parent's guide |
| Knowledge test | The multiple-choice test based on the California Driver's Handbook. The passing score is 80%, and in-office tests must be started before 4:30 p.m. | Permit test study plan |
| Permit validation | A minor's permit becomes valid once a professional driving instructor signs it, after at least one hour of behind-the-wheel training. | Supervised practice |
| The 17½ rule | An applicant over 17½ but under 18 can get a permit without the driver education and training certificates. That applicant cannot take the drive test until 18. | Permit and license dates |
Training and practice terms
These terms describe the driving a teen does between the permit and the drive test. Training is with a professional; practice is with a family member or other licensed adult.
| Term | Plain definition | Learn more |
|---|---|---|
| Driver training (DT) | At least six hours of behind-the-wheel training with a professional driving instructor. It can't exceed two hours per day. | Education vs. training |
| Behind-the-wheel training | Another name for driver training: driving lessons in a car with a professional instructor. Time spent watching another student drive does not count toward the six hours. | How we teach (opens in a new tab) |
| Professional driving instructor | A driving instructor at a licensed school. Instructors must carry an instructor's ID card, and you can ask to see it. | Parent's guide |
| Supervised practice | At least 50 hours of driving for an applicant under 18, with a California-licensed driver who is at least 25. Ten of the hours must be at night. | Supervised practice |
| Six-month permit hold | An applicant under 18 must hold a permit for at least 6 months, or turn 18, before scheduling the drive test. | Teen permit timeline |
License and restriction terms
These terms cover the drive test and the first license. A driver under 18 gets a provisional license with its own limits.
| Term | Plain definition | Learn more |
|---|---|---|
| Drive test (behind-the-wheel drive test) | The test where you control the car while a DMV examiner rides along and evaluates your driving skills. | Permit and license dates |
| Driving performance evaluation (DPE) | The part of the drive test where you drive with a DMV examiner who evaluates your driving skills. | Teen permit timeline |
| Class C license | The noncommercial driver's license most people need. Commercial vehicles and motorcycles need a different class. | Permit and license dates |
| Provisional license | The license a driver under 18 receives, marked with the word provisional. It comes with limits on night driving, passengers and driving for pay. | Provisional license rules (opens in a new tab) |
| Night restriction | During the first 12 months, a provisional driver cannot drive between 11 p.m. and 5 a.m. | Provisional license rules (opens in a new tab) |
| Passenger restriction | A provisional driver cannot carry passengers under 20 unless a parent, guardian or other California-licensed driver who is at least 25 rides along. | Provisional license rules (opens in a new tab) |
| Exception note | A signed note that lets a provisional driver drive despite the limits for a medical need, school, work or an immediate family member. A doctor, school official, employer or parent signs it. | Parent's guide |
| REAL ID | A driver's license or ID card that meets federal ID rules. Since May 7, 2025, a REAL ID or another federally compliant card, such as a passport, is needed to board a domestic flight or enter some federal facilities. | Permit visit checklist |
Road rule basics
These terms appear on the knowledge test and in every practice drive. The handbook is the source for each one, and the Vehicle Code backs the consent rule.
| Term | Plain definition | Learn more |
|---|---|---|
| Basic Speed Law | You may never drive faster than is safe for current road conditions. Your speed should depend on conditions, whatever the posted limit. | California speed laws |
| Right-of-way | The rules that decide who goes first when vehicles, pedestrians and cyclists meet on the road. | Right-of-way rules (opens in a new tab) |
| Yield | To wait, slow down and be ready to stop so vehicles or pedestrians with the right-of-way can go first. | Right-of-way rules (opens in a new tab) |
| Three-second rule | A check on following distance. When the vehicle ahead passes a fixed point, count three seconds; if you reach the point first, you are too close. | Sharing the road |
| Blood alcohol concentration (BAC) | The amount of alcohol in your blood. A driver under 21 may not drive with a BAC of 0.01% or higher. | Alcohol and drug laws under 21 |
| Implied consent | By driving in California, you consent to a breath, blood or urine test if an officer suspects DUI. If you refuse, the DMV will suspend or revoke your driving privilege. | Alcohol and drug laws under 21 |
| Vulnerable road users (VRU) | People using the road without a motor, such as cyclists and pedestrians, including people using a wheelchair, tricycle or quadricycle. | Sharing the road |
| Traffic citation | A ticket: an official summons from law enforcement for breaking a traffic law. | California speed laws |
From our instructorsIn our lessons at Stallion School of Driving we use commentary driving: students say out loud what they see, what could happen and what they will do. Naming things with the right words, such as who has the right-of-way, makes the thinking visible so the instructor can correct it. Families can use this glossary the same way during practice drives.
Quick answers
Check yourself
Sources
- California Driver's Handbook (PDF, Sections 1, 2, 6, 9, 10 and 14) (opens in a new tab)
- California DMV: Driver training schools (opens in a new tab)
- California DMV: Driving school certificate order form (OL 400) listing DL 400B, DL 400C and DL 400D (PDF) (opens in a new tab)
- California DMV: Learner's permits (opens in a new tab)
- California DMV: Occupational License Lookup (opens in a new tab)
- California Vehicle Code section 23612: Chemical tests (opens in a new tab)
Checked: October 5, 2026. Rules and forms can change; recheck the official page before acting.
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