Flashing too fast might seem harmless, but it can get you ticketed in California for signaling improperly.
Yes, hyper-flashing turn signals can be considered illegal in California because they interfere with proper communication between drivers and violate safety code standards.
Here’s what you need to know about turn signal laws in California.
What Is Hyper-Flashing?
Hyper-flashing refers to when a vehicle’s turn signal blinks significantly faster than normal—usually caused by installing LED bulbs without the appropriate load resistors or relay upgrades. This rapid blinking mimics the effect of a failed bulb.
California Law on Turn Signals
Under California Vehicle Code Section 24951, vehicles are required to have properly functioning signal lamps that blink at a rate of 60 to 120 flashes per minute. Exceeding that limit may result in:
- Fix-it tickets
- Failed vehicle inspections
- Citations for unsafe vehicle condition
If your car is flashing abnormally fast, officers can interpret it as a mechanical malfunction and issue a citation.
Why Hyper-Flashing Is a Safety Hazard
- Miscommunication: Other drivers may misinterpret the rapid blinking.
- False Alerts: Hyper-flashing signals mimic bulb outages, causing confusion.
- Driver Distraction: Flickering lights can be distracting in traffic.
Legal LED Installation in California
To comply with California regulations when upgrading to LEDs:
- Use DOT/SAE-compliant bulbs
- Install load resistors or compatible flasher relay
- Test signal flash rate after installation
- Avoid blue or white turn signals—only amber or red are legal
If your LED mod causes hyper-flashing, you’re legally obligated to correct it before driving.
Can You Pass Inspection with Hyper-Flashing?
No. Vehicle inspections in California typically check turn signal function. A hyper-flashing signal can cause you to fail a smog or safety inspection. It may also be flagged during emissions testing, especially if it’s part of a larger electrical or lighting malfunction.
How to Fix It Legally
As mentioned earlier, use:
- Load resistors (simulate the correct load)
- LED flasher relay (for electronic flashers)
Avoid DIY hacks or bypasses that disable flashing altogether—those are guaranteed to result in a citation or failed inspection.
Summary:
Hyper-flashing is illegal in CA and must be corrected to meet safety standards and avoid citations.
