Are You Seeing a Drone? Here’s How to Decode Their Light Signals

By Pilot Institute
Posted on March 6, 2025 - 5 minute read

Just before sunrise, two lights hovered in the sky—one red, one green—staying perfectly still against the skyscape. In the dark, it looked like a drone. The aircraft didn’t move, and it didn’t make a sound. Then, just as it seemed settled, it suddenly ascended. 

At first glance, it could have seemed like someone was flying a DJI Matrice, but after closer examination, it turned out to be a Life Flight helicopter.

Moments like this show why knowing drone technology matters. Without that knowledge, it’d be easy to mistake a medical aircraft for a drone—or worse, assume someone was spying.

In this article, we’ll separate the facts from the myths and answer the following question: “Are you seeing a drone?”

Key Takeaways

  • Drones use red, green, and white lights to indicate their position and status.
  • FAA regulations require anti-collision lights for nighttime operations.
  • Most drones are not equipped for surveillance and are unlikely to be spying on you.
  • Police drones are typically larger and more distinct than consumer aircraft.

How to Identify Drones at Night

Illustration of a drone with navigation lights and text explaining how to distinguish drones from aircraft at night based on lights, movement, and sound.

If you’ve ever looked up and seen something with flashing lights flying at night, you might think it’s a drone. However, the likelihood that the object you’re seeing is a manned aircraft is far higher. 

Identifying drones at night can be tricky, especially when they resemble other aircraft. However, drones typically have unique characteristics that set them apart.

Most drones operating at night are equipped with anti-collision lights, often including red and green LED lights on opposite sides and a white light at the rear, which may blink or remain steady depending on the model. These lights must be visible for at least 3 statute miles.

Unlike traditional aircraft, drones tend to hover in place or move in short, rapid bursts rather than flying in a continuous, straight path.

Another key distinction is sound. While airplanes produce a steady engine noise, drones emit a low buzzing sound due to their small rotors. This sound can be subtle, especially from a distance, but it’s a telltale sign that you’re looking at a drone rather than a manned aircraft.

FAA Requirements for Nighttime Drone Operations

Infographic detailing FAA requirements for nighttime drone operations, including anti-collision lights, commercial pilot certification, hobbyist guidelines, and compliance rules.

The Federal Aviation Administration (FAA) has specific regulations for drone operations at night. Any commercial drone pilot flying after sunset must comply with these rules.

One of the primary requirements is the use of anti-collision lighting. Drones must have anti-collision lighting visible from at least three statute miles away. This helps prevent mid-air conflicts with other aircraft and makes drones more identifiable to observers on the ground.

Commercial drone operators must also hold a Remote Pilot License (or Certificate) with a Small Unmanned Aircraft Systems (sUAS) Rating, demonstrating knowledge of airspace regulations, safe drone operation, and night flight procedures if applicable.

 Hobbyist pilots, while not subject to the same certification, are still encouraged to follow best practices to enhance visibility and avoid conflicts with other aircraft.

Failing to comply with these regulations can result in penalties, as the FAA prioritizes safety in both commercial and recreational drone use.

Operators flying without proper lighting or certification may be in violation of FAA regulations and subject to penalties.

Is a Drone Watching You? Myths vs. Reality

Infographic comparing myths and realities of drone surveillance, covering camera capabilities, battery life, privacy laws, and legal rights.

Many people worry that drones are being used for surveillance, but the reality is quite different. While drones are capable of capturing footage, their design makes them inefficient for spying. 

Many consumer drones come equipped with wide-angle cameras, typically intended for scenic shots. However,  some models now offer significant zoom capabilities that can capture detailed close-ups.

Also, many drones have limited battery life, typically lasting 20 to 30 minutes per battery. However, extended surveillance is possible with battery swaps or the use of tethered systems.

Privacy laws also restrict how drones can be used. In the United States, unauthorized surveillance using a drone is illegal, and drone operators must follow strict guidelines to ensure they are not violating anyone’s privacy. 

While drones can record footage, they are far less discreet than most people assume. 

If you ever feel concerned about a drone’s presence, it’s best to familiarize yourself with federal, state, and local privacy laws before taking any action.

How to Spot Police Drones

Infographic explaining how to identify police drones, including features like infrared cameras, LiDAR scanners, zoom capabilities, and larger drone size.

Law enforcement agencies use drones for public safety operations. These drones may have unique features such as:

  • Infrared (IR) or thermal imaging cameras for nighttime searches.
  • LiDAR (Light Detection and Ranging) scanners for crime scene recreation.
  • High-powered zoom lenses for surveillance from a distance.
  • Larger size compared to consumer drones.

Police use drones primarily for search and rescue, crime scene documentation, building clearing, and crowd monitoring.

 If you see a drone near an emergency or accident scene, it is likely assisting law enforcement. Do not interfere with a law enforcement operation by using your own drone to help out unless you receive permission to do so.

Tips for Identifying Drones at Night Safely

Infographic listing ways to identify police drones, including using binoculars, checking ADS-B Exchange, observing light patterns, reporting unsafe drones, and avoiding interference.

If you’re curious or concerned about a drone flying at night, here are some safe ways to identify it:

  • Use binoculars or a camera with zoom to get a clearer view.
  • To help rule out manned aircraft, you can utilize ADSB Exchange, which tracks aircraft transmitting ADS-B signals. Keep in mind that most drones do not transmit ADS-B.  Observing the object’s movement and light patterns may offer better clues for identification.
  • Observe light patterns and record their behavior to compare with known drone models.
  • If you observe a drone being operated recklessly, in restricted airspace (like near airports), or in a manner that appears to violate privacy laws, report the activity to local authorities. 

Provide as much detail as possible, including location, time, date, description of the drone, and any observed flight characteristics. 

But keep in mind, most drones are operated legally and for harmless purposes. 

Avoid interfering with a drone’s flight, as this can be dangerous and potentially illegal.

Conclusion

Drones at night can be exciting to watch, but knowing how to identify them helps separate fact from fiction. Most drones (and their operators) follow FAA regulations, and their presence is usually harmless. 

If you’re ever unsure, observe their flight pattern, listen for sound, and use simple tools like binoculars to get a closer look. To learn more about how drones are used in different commercial settings, take a look at Pilot Institute’s Drone Business Guide.