FLASHING PORCH LIGHT COULD BE A LIFE-SAVER. Emergency vehicles can spot a flashing light from quite a distance, so they can zero in on the house in distress without having to slow down to read addresses. These switches are illuminated so they can easily be found in the dark.Click to see full answer. Thereof, why is my porch light blinking?Flickering or blinking lights are usually caused by one of four things: Problem with the bulb (not in tight enough, wrong bulb type for dimmer switch) Faulty light or fixture switch. Appliance pulling large amounts of current on startup, causing a voltage drop.Likewise, why is my outdoor flood light flashing? LED flood lights may flash or flicker for many reasons. Common causes include: Fluctuations in the home or building’s voltage, such as when other appliances or electrical systems are in use, causing fluctuating loads. These switches reduce the volts to produce a dimming effect, which is not appropriate for LED bulbs. Also asked, what does a red porch light signify? Traditionally, it means a whore house/prostitution. Some people do it because they think they are supporting firefighters, just as green bulbs became symbolic of support for the military a few years ago. The latest rumor is that anti-gun liberals are shining the red light to oppose guns.What does blue porch light mean?The blue lights convey a message of respect and solidarity for all officers and their families, according to sheriff’s officials. If you notice a blue light bulb lighting up someone’s porch, this is the meaning: The blue lights convey a message of respect and solidarity for all officers and their families.