## Common ground
All options are electrical devices used for safety signaling or illumination in hazardous environments.
## Options at a glance
**8512.20 – LED tail lights for trucks**
- **Defining trait:** Designed specifically for motor vehicles, providing rear visibility and signaling.
- **Typical examples:** Truck brake lights, LED taillights.
- **Best fit when:** Installed on vehicles to indicate braking or direction.
**8513.10 – Portable miner’s safety lamps**
- **Defining trait:** Self-powered, handheld, used in low-light, high-risk environments like mines.
- **Typical examples:** Battery-operated headlamps for miners, portable lanterns.
- **Best fit when:** Used by individuals moving through dark or dangerous areas without fixed power.
**8531.80 – Road safety lights (sound/visual)**
- **Defining trait:** Electric signaling devices that emit light or sound to warn of hazards on roads.
- **Typical examples:** Flashing hazard beacons, temporary traffic warning lights.
- **Best fit when:** Deployed temporarily to alert others to roadwork or accidents.
## Key differences
| Feature | 8512.20 (Vehicle Tail Lights) | 8513.10 (Portable Miner’s Lamp) | 8531.80 (Road Safety Lights) |
|-----------------------|-------------------------------|----------------------------------|-------------------------------|
| Power source | Vehicle electrical system | Built-in battery | Battery or plug-in |
| Mobility | Fixed to vehicle | Handheld/portable | Portable, often placed on ground |
| Primary function | Vehicle signaling | Personal illumination | Hazard warning |
## How to choose
- Is it permanently mounted on a motor vehicle? → 8512.20
- Is it carried by a person in a hazardous environment (e.g., mine)? → 8513.10
- Does it flash or sound to warn of danger on roads or at sites? → 8531.80
## Overlaps & pitfalls
A portable lamp with flashing light could fit both 8513.10 and 8531.80. If the main purpose is personal illumination, use 8513.10; if it’s for warning others, use 8531.80. The defining function determines the correct code—choose based on primary use