A blinking single bulb red light is the same as a regular 3 bulb traffic light red light, with the exception the 1 bulb red light on/off is programmed with a shorter periodicity. Take a blinking red and make it a solid red. Obviously, they took a 3 bulb traffic light where the red light should be turned off periodically and programmed it to show continuous red. A continuous red light on a 3 bulb red/green/yellow traffic light is abnormal behavior for that type of traffic sign.