According to the California Department of Motor Vehicles, a blinking or flashing yellow light means that drivers should proceed with caution. Unlike a blinking red light, a blinking yellow light does not require drivers to stop, but it does suggest that they slow down and remain particularly alert.
According to the Texas Department of Transportation, a blinking yellow arrow light indicates that a driver may make a left turn but must yield to oncoming traffic. This signal differs from a steady yellow arrow light, which indicates that drivers should prepare to cease making left turns. As the Minnesota Department of Transportation explains, the blinking yellow light for arrows allows more customization for directing the flow of traffic.