Fire Exit Signs Explained: Routes, Symbols and Siting

The green running figure

Escape signage belongs to the safe condition category: green background, white symbol. The standard pictogram is a running figure, usually with a door and a directional arrow, and it is recognised internationally precisely because it does not depend on reading English.

Green means "this way is safe", which is why the same colour family covers first aid points and assembly points. Red and yellow signs are doing different jobs — prohibition, fire equipment location and hazard warning — and mixing the colour conventions is one of the quickest ways to confuse people.

Arrows: the detail that causes most errors

An arrow must describe the movement from the position of the sign. Straight ahead, left, right, down the stairs, up the stairs and through the door are all distinct instructions, and choosing an arrow that points diagonally when a route turns squarely creates hesitation.

Stair signage is where this matters most. A sign that suggests "up" when occupants must descend is an outright hazard, and it happens surprisingly often when a general-purpose sign is used on both landings.

Spacing: the next sign should always be in view

The working principle is continuity. From anywhere on an escape route, someone should be able to see the next escape sign, so they can move from one to the next without a decision. In practice that means a sign at every junction, at every change of direction, at each stair landing, and along long uninterrupted runs where the exit is not visible.

Viewing distance drives size: the further away a sign has to be read, the bigger it needs to be. A small door-mounted sign that works at three metres will be useless at twenty.

Final exits and doors

The final exit needs to be identifiable as the way out of the building, not just another door on the route. It also needs to be obvious how the door opens — panic hardware, push bar, or a keypad release — because a correctly signed exit that people cannot operate under pressure is a serious failure.

Doors on the route carry their own notices with distinct purposes: fire doors kept shut, fire doors kept locked, automatic release doors. These are not escape direction signs and should not be confused with them; they exist to protect the compartmentation the escape route relies on.

Seeing signs when the lights fail

Escape signage must remain visible if normal lighting is lost. There are two established approaches. Photoluminescent signs absorb ambient light and glow in darkness, which requires them to have been adequately lit beforehand. Internally illuminated signs use their own light source, often with a battery backup, and are common in larger or more complex buildings.

Which is appropriate depends on the building, its occupancy and its emergency lighting provision, so the fire risk assessment should drive the choice. Mounting height matters too: smoke rises, so a sign high on a wall can be lost when a lower-mounted or door-level sign is still readable.

Materials and mounting

Interior escape signs are commonly rigid plastic or foamex panels, or photoluminescent sheet. Exterior positions and industrial or wash-down environments need more robust materials such as aluminium or engineered plastics with appropriate fixings.

Projecting and hanging signs are worth using in long corridors and open-plan areas, because a flush wall panel is invisible to someone walking towards it. Whatever the format, fixings must be reliable — a sign that has fallen behind a radiator is a gap in the route.

What breaks an escape scheme

• Signs added one at a time over years, so styles, symbols and sizes no longer match

• Racking, stock, screens, artwork or a propped door obscuring a sign

• A route resigned after a partition went in, but only in one direction

• Photoluminescent signs in a windowless area that never receives enough light to charge

• Handwritten or printed paper notices standing in for missing signs

• Arrows left pointing at a doorway that is now a store cupboard

A simple walk-through check

Start at the furthest point from an exit and walk out. At every step, ask whether the next sign is visible and whether its arrow is unambiguous. Then do it again from a different starting point, and again from the direction a visitor would arrive.

Record what you found and when. A scheme that is walked, checked and dated is a managed scheme; one that has simply been installed is an assumption.

Common questions