The UNECE (United Nations Economic Commission for Europe) Regulation 107 Uniform provisions concerning the approval of category M2 or M3 vehicles with regard to their general construction, adopted by the European Union, set uniform technical prescriptions for wheeled vehicles, equipment and parts which can be fitted and/ or be used on wheeled vehicles.
The importance of the use of safety signs on board vehicles covered by Regulation 107 is addressed in chapter 7.6.11 Safety Signs.
The complete prescriptions for safety signs of Regulation 107 will be addressed throughout this catalogue. It is, however, relevant to state that Regulation nº107 prescribes the use of photoluminescent safety signs that posses the minimum luminance decay properties in compliance to Class C as defined by ISO 17398:2004.
Additionally to the UNECE Regulation 107, there are other Standards and Legislation applicable to safety signs. The complete list of Standards and Legislation referred in this catalogue is as follows:

UNECE Regulation No. 107 - Uniform provisions concerning the approval of  category M2 or M3 vehicles with regard to their general construction
Railway Group Standard GM/RT2130, Issue 4 - Vehicle Fire, Safety and Evacuation
Railway Group GM/RC2533 Recommendations for Rail Vehicle Emergency and Safety Information
CEN/TS 45545 (all parts), Railway applications — Fire protection on railway vehicles
EN 50153 - Railway applications — Rolling Stock — Protective provisions relating to electrical hazards
The Health and Safety (Safety Signs and Signals) Regulations 1996
Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community
European Directive 92/58/CEE of 24th June - Council Directive on the Minimum Requirements for the Provision of Safety and/or Health Signs at Work
Regulation (EC) No 1371/2007 of the European Parliament and of the Council of 23 October 2007 on rail passengers’ rights and obligations
Regulation (EU) No 181/2011 of the European Parliament and of the Council of 16 February 2011 concerning the rights of passengers in bus and coach transport and amending Regulation (EC) No 2006/2004
European Directive 2004/54/CE of 29th April – Defining the minimum safety requirements for tunnels in the Trans-European Road Network
BS EN 13272:2012Railway applications. Electrical lighting for rolling stock in public transport systems
BS EN 45545-6:2013Railway applications. Fire protection on railway vehicles. Fire control and management systems
BS EN ISO 7010:2012Graphical symbols - Safety colours and safety signs - Registered safety signs (supersedes BS 5499 - 5: 2002 - Signs with specific safety meanings)
BS ISO 3864-3:2012Graphical symbols - Safety colours and safety signs - Part 3: Design principles for graphical symbols for use in safety signs (supersedes BS 5499 - 6: 2002 - Creation and design of graphical symbols for use in safety signs-requirement)
BS ISO 3864-1:2011Graphical symbols - Safety colours and safety signs - Part 1: Design principles for safety signs and safety markings (supersedes BS 5499 - 1: 2002 - Specification for geometric shapes, colours and layout)
BS ISO 3864-2:2016Graphical symbols - Safety colours and safety signs - Part 2: Design principles for product safety labels
BS ISO 3864-4:2011Graphical symbols - Safety colours and safety signs - Part 4: Colorimetric and photometric properties of safety sign materials
BS ISO 23601:2009Safety Identification – Escape and evacuation plan signs
BS 5499-4:2013Part 4: Code of practice for escape route signing
BS 5499-10:2014Guidance for the selection and use of safety signs and fire safety notices
BS ISO 17398:2004Safety colours and safety signs classification - performance and durability of safety signs
BS ISO 16069:2017Graphical symbols safety signs Safety Way Guidance Systems (SWGS)
BS 8502:2003Graphical symbols and signs creation and design of public information symbols Requirements
BS 5266-6:1999Emergency lighting. Code of practice for non-electrical low mounted way guidance systems for emergency use. Photoluminescent systems
Transport for London Design StandardsDocklands Light Rail Signs standard Issue 2; Cable car graphics standard Issue I, New Bus For London graphic standards Issue 2, London Overground signs standard Issue 3, London River Services Signs standard Issue 4, London Underground Signs manual Issue 4, Tram stop signs standard Issue 3
APTA PR-PS-S-006-23Emergency Egress/Access Signage and Low-Location Exit Path Markings for Passenger Rail Equipment

Two of the standards (APTA SS-PS-002-98, "Emergency Signage for Egress/Access of Passenger Rail Equipment,” and APTA SS-PS-004-99, "Low-Location Exit Path Marking”) have been combined into this standard.
49 CFR § 238Passenger Equipment Safety Standards
49 CFR § 299Texas Central Railroad High-Speed Rail Safety Standards
APTA RT-VIM-S-026-12Rail Transit Vehicle Passenger Emergency Systems
DIN 67 510Photoluminescent pigments and products