California Vehicle Code 22107 makes it illegal to turn or change lanes unless the movement can be made with reasonable safety and you’ve signaled when any other vehicle may be affected. A citation is an infraction that typically costs around $238 once penalty assessments are added, and it puts one point on your DMV record for three years.1California Legislative Information. California Code VEH 22107 – Turning and Stopping and Turning Signals
What the Statute Requires
The law imposes two separate obligations, and both have to be met. First, the movement itself has to be reasonably safe. Second, you have to signal whenever another vehicle may be affected by the move.2California Legislative Information. California Vehicle Code 22107 – Turning and Stopping and Turning Signals
The safety piece is a judgment call you make before the wheels start turning. Can you complete the lane change, turn, merge, or shoulder pull without forcing another driver, cyclist, or pedestrian to react? A perfect signal doesn’t cure an unsafe move. If you signal and still cut someone off, you’ve violated the section.
The signal piece has a condition inside it. You only owe a signal “in the event any other vehicle may be affected.” As a practical matter, you should always signal, because you rarely know for certain that no one is close enough to be affected. But that qualifier matters if you ever have to contest a ticket on an empty road.
The 100-Foot Rule
CVC 22108 fills in what a proper signal looks like. Your turn signal has to be on continuously during the last 100 feet you travel before the turn or lane change begins.3California Legislative Information. California Code Vehicle Code 22108 – Turning and Stopping and Turning Signals That’s roughly seven car lengths. The 100 feet is a floor, not a target, and it applies regardless of how fast you’re going. At freeway speeds you cover it in about a second, so highway lane changes need the signal on well before your hands move on the wheel.
Signaling for the full 100 feet doesn’t buy you out of the safety requirement. If the move would force another driver to brake, the two statutes together still put you in violation.
Which Moves Are Covered
CVC 22107 reaches any lateral movement on a roadway when another vehicle could be affected, not just the moves people label as “turns” or “lane changes.”
- Lane changes on multi-lane roads.
- Left and right turns at intersections, including into driveways and parking lots.
- Merging from an on-ramp onto a freeway.
- Pulling from a travel lane over to the shoulder or curb.
- Swerving around debris or a pothole, though a genuine emergency may provide a defense.
Fine, Points, and Insurance
A CVC 22107 citation is an infraction. There’s no jail exposure and no criminal record. The statutory base fine for this kind of moving violation is $35, but California layers state penalty assessments, court construction fees, a DNA fund fee, county penalties, and a 20% state surcharge on top of that base.4California Courts. Uniform Bail and Penalty Schedules The total lands around $238, and additional court fees can push what you actually owe past $400.
The DMV also adds one point to your record. Under CVC 12810, any conviction involving the safe operation of a vehicle carries one point.5California Legislative Information. California Code VEH 12810 That point stays on your record for three years and can raise your insurance premiums for the same period. Accumulate four points in 12 months, six in 24 months, or eight in 36 months, and the DMV can suspend your license as a negligent operator.
Traffic School
Traffic school is usually the right move if you qualify. Completing a court-approved course masks the DMV point from your public driving record, which keeps insurance companies from seeing it. You’re eligible if you haven’t attended traffic school in the past 18 months and the violation is a qualifying infraction.6California Courts. Traffic School
Traffic school doesn’t erase the fine. You still pay the full ticket plus a court administrative fee. For most drivers, the three-year insurance savings outweigh the added cost. The court has to approve your request and a judge can deny it, so don’t treat it as automatic.
Why This Ticket Matters After a Crash
If you violated CVC 22107 and caused a collision, the other driver’s attorney can argue negligence per se. Breaking a safety law that was designed to prevent the exact type of harm that occurred creates a presumption you were negligent. CVC 22107 exists to prevent lane-change and turning collisions, so a violation tied to one of those crashes is powerful evidence of fault.
California uses pure comparative negligence, so fault can be split. If you changed lanes without signaling and the other driver was speeding, a court might apportion responsibility between you. Even so, a CVC 22107 violation often tips the balance against the driver who made the unsafe move. That’s a big reason officers frequently write this code at accident scenes, and a reason fighting the ticket can matter far beyond the fine.
Fighting the Ticket
Two defenses come up most often. The first attacks whichever element the officer says you violated. Because the statute requires “reasonable safety” and only requires a signal when another vehicle “may be affected,” a lane change on a clear road with no one nearby may not meet either trigger.1California Legislative Information. California Code VEH 22107 – Turning and Stopping and Turning Signals Dashcam footage or a passenger’s testimony showing the road was empty gives that argument something to stand on.
The second defense is emergency. If you swerved to avoid a tire in the road, a pedestrian stepping off the curb, or a car stopping abruptly in front of you, the emergency can justify the lane change even without a signal. Courts recognize that rigid compliance with signaling rules isn’t always possible when a split-second decision keeps you from a worse outcome.