Automotive Warning & Emergency Lights: what Claude and GPT would buy

Two AI models chose on their own, with no web access. Nobody tested these products: this is what each one says, and how to check it.

They disagree: Claude chooses ECCO and GPT chooses PowerFlare

In Automotive, Claude and GPT choose the same brand in 60 of 112 categories.

Claude Opus 5.5 · October 27, 2026

ECCO (brand)

ECCO is a long-standing maker of amber beacons and light bars for tow, plow, utility and fleet use, and builds to the SAE optical warning standards that cheap generic units often only claim.

Not for: Civilians who want red or blue lighting, which is restricted to authorized emergency vehicles in most jurisdictions, or anyone needing police-grade multi-color bars.

GPT 6.1 Sol · November 10, 2026

PowerFlare PF-200

A compact, reusable LED warning beacon that improves roadside visibility without the flame or burning residue of traditional flares.

Not for: Replacing legally required emergency-vehicle lighting or reflective warning triangles.

Which one fits you

roadside breakdown flare replacement

Sirius Signal SOS Distress Light (line)

A battery LED electronic flare that replaces pyrotechnic road flares with no fire risk or expiry.

Not for: Work crews who need vehicle-mounted, continuously powered warning lights.

Check before you buy

Color legality. Private, tow, plow and utility vehicles are generally limited to amber (some states allow green or white for specific uses); red and blue are typically reserved for authorized emergency vehicles. The wrong color can mean fines or impersonation charges, so check your state's vehicle code before buying.
SAE compliance. Look for SAE J845 (Class 1 is the brightest) or SAE J595 marking on the unit, not just in the listing. Many fleet, DOT and municipal contracts require certified devices, and the certification separates real output from marketing claims.
Mounting type. Magnetic for temporary use, provided the magnet is rated for highway speed; permanent bolt or pipe mount for daily work vehicles. Weak magnets shed beacons at speed, and dangling cords get pinched in door seals.
Voltage and wiring. Match 12V or 12-24V to the vehicle, and fuse the circuit when hardwiring. Heavy trucks run 24V, and an unfused hardwired lead is a fire risk.
Radio interference. Prefer units from brands that address RFI or EMI emissions. Cheap LED drivers can jam AM/FM, CB and two-way radios that work vehicles depend on.

Where to find ECCO

Zoro
Imperial Supplies

Shops seen in search results on November 6, 2026. A shop missing here may sell it too. Nothing was checked by a person.

Brands that matter

Whelen: Premium US maker of emergency and work lighting across beacons, bars and lightheads.
ECCO: Strong in amber beacons and light bars for commercial and utility fleets.
Federal Signal: Established emergency lighting and siren maker focused on public safety.
Code 3: Emergency vehicle light bars and lightheads.
SoundOff Signal: Surface-mount lightheads and light bars for fleets and responders.
Feniex: LED emergency lighting with a large upfitter following.

What to avoid

Red/blue 'police style' kits bought for a personal vehicle.
Listings that claim SAE compliance without a marked class on the product.
Beacons with thin cigarette-lighter cords that are routed through door seals.
Unbranded LED units with no mention of RFI performance if you rely on a radio.

Questions

Can I put amber warning lights on my personal truck?

It depends on your state: many allow amber for specific roles such as tow, plow, rural mail or volunteer duty, and some restrict use while driving, so check the local vehicle code.

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