Caution: This Room Is Protected by a CO₂ Fire Extinguisher System Safety Sign (M171) emergency exit left improving safety and preventing inappropriate

improving safety and preventing inappropriate use by general traffic

It supports earlier speed adjustment and improved scanning

Fuel and chemical zones where “Smoking of Tobacco is harmful” reduces ignition risk

where relevant

This sign warns of an upcoming angled junction

Caution: This Room Is Protected by a CO₂ Fire Extinguisher System Safety Sign (M171) emergency exit left improving safety and preventing inappropriateThe Caution: This Room Is Protected by a CO Fire Extinguisher System sign (M171) is a custom sign used to communicate a clear, site specific message at the exact point where it matters. Purpose and function This sign warns of the specific hazard described, Caution: This Room Is Protected by a CO Fire Extinguisher System. It helps people recognise the risk early, and reduces the chance of delayed emergency response and restricted evacuation.