# What To Do When You Encounter Flashing Or Solid Yellow Traffic Lights
Drivers often confuse the meaning of solid yellow and flashing yellow traffic signals, creating safety hazards at intersections. Understanding the distinction matters for legal compliance and accident prevention.
A solid yellow light signals that the green phase is ending. Drivers have a brief window to safely clear the intersection before the light turns red. If you cannot stop safely, you may proceed through, but you must yield to oncoming traffic and pedestrians. Running a solid yellow carries legal risk in many jurisdictions, particularly if an accident occurs.
A flashing yellow light operates under different rules entirely. This signal means "proceed with caution." You retain the right of way but must yield only to pedestrians and cross-traffic that has already entered the intersection. Unlike a solid yellow, a flashing yellow does not demand the same urgency to clear the space. Treat it more like a warning to stay alert and watch for hazards.
The distinction exists because flashing yellows typically appear at less-busy intersections where traffic management differs from controlled signals. Some drivers incorrectly treat flashing yellows as stop signs or confuse them with solid yellows, leading to rear-end collisions when they brake unexpectedly.
Proper response to each signal reduces crash risk and keeps intersections flowing. At a solid yellow, assess whether stopping is safe. If not, proceed while watching for red-light runners and cross-traffic. At a flashing yellow, maintain your approach speed but heighten awareness of pedestrians and conflicting traffic.
Most states follow these MUTCD (Manual on Uniform Traffic Control Devices) standards, though local variations exist. Reviewing your state's traffic handbook clarifies local enforcement. Teaching new drivers the difference prevents confusion that turns routine intersections into danger zones.