This table shows maximum viewing distances in 'good' and 'poor' light conditions. Please note that hese are a guidelines only - please refer to BS ISO 3864-1: 2011 for specific calculations. You can download a copy of the Health and Safety Executive's "Safety signs and signals" document by clicking here.
|Sign Dimension (W x H mm)||Max. Distance - Poor Light||Max. Distance - Good Light|
|300 x 100mm||6.6M||11.8|
|450 x 150mm||9.5M||17M|
|600 x 200mm||14.3M||25M|