EN471:2003 (High-visibility warning clothing for professional use)
CLASS 3: Highest Level of conspicuity
Minimum background material 0.8m2
Minimum Retro-reflective material 0.2m2
This means that the garment has sleeves and is suitable for working on dual carriageway roads with a speed limit of 50mph or above
CLASS 2
Minimum background material 0.5m2
Minimum Retro-reflective material 0.13m2
CLASS 1
Minimum background material 0.14m2
Minimum Retro-reflective material 0.10m2
This class includes garments suitable for minimal risk environments such as off road activities. Hi-vis trousers will commonly meet this standard when worn separately from upper garments.
EN343
This encompasses Foul Weather Clothing and Water Proofing.
There are two parts to the standard with each having three levels of
A Resistance to water penetration
This is the garments waterproof level (0 - 3)
0 - No Protection
3 - Highest level of protection
B Steaming Resistance
This is the garments breathability level (0 - 3)
0 - No Protection
3 - Highest level of protection
Application field
The present standard specifies the protective garments characteristics against the influence of atmospheric exposures, wind and cold above -5c
The first number on the right of the pictogram indicates the class of resistance to water penetration, the second one the class of streaming resistance.
GORT3279 - Railway Group Standard for High Visibility Clothing
ES510 - Quick Release fasteners for railways vests and waistcoats
EN531 - Flame Retardant
EN533 - Flame Spread
EN470 - Molten Metal (Welding) protection.
GO/RT 3279:2008 is the minimum requirement for working on the railway network in the UK and is based on the above mentioned EN471/2003 with class 2 being the minimum allowed but with an orange/red colour garment only.