Which statement preserves the exact distinction between CEVNI blue dangerous-goods and authority signals?
Short answer
Steady blue counts mark cargo categories; a blue scintillating light marks an authorised role
Article 3.14 ties one, two and three steady blue lights or downward blue cones to specified flammable, health-hazard and explosive categories under the applicable dangerous-goods rules. Article 3.27 uses a blue scintillating light for an authorised supervising or responding fire or rescue role. Revisit Dangerous-Goods, Passenger and Ferry Marks.
Sources and scope
Reviewed by Richard Moore on . This answer is scoped to european inland waterways; local rules still apply; check the current chart, publication, local rules and official operational guidance before acting afloat.
Quick check
Which statement preserves the exact distinction between CEVNI blue dangerous-goods and authority signals?