Blue Spot Light (Forklift Blue Warning Light)

The lamp is a downward projector, not a rotating beacon. That distinction is legal as well as optical: beacon rules such as UNECE R65 govern special warning lamps on road vehicles, while a floor projection on an indoor truck falls outside them.

Distance and power: what manufacturers publish

STILL is the only manufacturer publishing both figures — light spots approximately 5 m in front of and behind the truck, from LEDs rated 5 W at 12 V with about 20,000 hours of life. Linde describes the cone as several metres ahead and publishes IP67 and over 20,000 hours but no wattage. Figures such as 10 W or 30 W circulate on retail listings without any manufacturer source behind them.

Is blue required?

No. ANSI/ITSDF B56.1 refers only to lights or blinkers and specifies no colour. In the EU, Machinery Directive 2006/42/EC Annex I 1.7.1.2 requires warning devices to be unambiguous and easily perceived, again without naming a colour. The clearest evidence is commercial: Linde sells a red version precisely for sites where blue is already used for other warning notices, and Jungheinrich’s floor projection is red. Neither would be permissible if a standard mandated blue.

Blue is a convention, not a requirement. It is used because it contrasts with the red and yellow already painted on most plant floors.

Where colour rules do apply

Restrictions on blue lights are highway rules. In the US they sit in state vehicle codes such as Minnesota Statutes 169.64, which govern vehicles on public roads. In the EU, the Commission’s guide to the Machinery Directive notes at paragraph 308 that lighting rules for mobile machinery on public roads are not harmonised at Union level and remain national traffic law. Indoors there is no such restriction; a truck that also travels on a public road is a different question.

Origin

Linde introduced the BlueSpot around 2012 and states in its own material that it was not the first warning system, only that earlier solutions were mostly acoustic. Treat "the original blue light" claims accordingly. See our forklift safety lights range for blue spot and red zone types.