Clearly identify escape routes and emergency exists - even in the event of a power failure. Available in self-adhesive vinyl for indoor use or 1.2mm polypropylene material for indoor and outdoor use. Made using an environmentally friendly polyester film which is white in appearance in daylight and glows brightly when lighting is no longer available. Compliant with PSPA, DIN, IMO and British Standard requirements. All symbols, where applicable, conform to ISO 7010. Ensure the correct use of a directional arrow within an escape route sign. Use of any upper and lower case lettering - visually impaired people read and more clearly understand written messages with only an initial upper case letter.