The short answer
An evacuation map for a park, campus or stadium is really a stack of layers, because the correct response depends on the hazard. One permanent set — base geography, buildings, gates, routes, assembly points, accessibility, medical and utility data — is drawn once. Scenario layers then decide the action: fire usually means moving to an outdoor assembly point for a head count, while lightning means going indoors to a substantial building, and a hazmat release may mean sheltering or moving upwind. Draw once, then toggle by scenario.
Key takeaways
- An open or multi-building site needs layered data rather than a single drawing, because visitors are usually strangers to the layout and the dominant threats are weather and distance as much as fire.
- Keep permanent layers (base, movement and egress, assembly and shelter, accessibility, medical and response, utility) current once, and let scenario layers decide the action for each hazard.
- Never assign one assembly point to every emergency: the hazard can block it, and during lightning an open outdoor point is itself dangerous.
- Match the destination to the hazard — fire points serve accountability outdoors, while lightning and severe weather require indoor shelter in a substantial building for 30 minutes after the last thunder.
- Standardize symbols (for example NFPA 170) and follow map hygiene — north arrow, legend, 'you are here' and color-coded primary and secondary routes — so strangers can read the map fast.
- Separate the public map from a responder map that carries hydrants, shutoffs and utilities, and keep only civilian-relevant detail visible to the public.
- Refresh the map on the same triggers as the emergency action plan: after drills, incidents, construction and seasonal or routing changes.
Why an open-site map is a layer system, not a single drawing
A building evacuation diagram shows one floor and the nearest exits. An open or multi-building site is different: there is no single floor, most visitors are seeing the layout for the first time, and the dominant threats are often weather and distance rather than smoke and fire. Standards such as ASTM E2238-12 were written to make evacuation route diagrams consistent enough that occupants can read them under stress, and U.S. rules under 29 CFR 1910.38 require a written emergency action plan — covering how to report an emergency, exit-route assignments and how to account for employees after evacuation — that people can review and that is updated when the plan or assignments change.
The practical consequence is that designers should build one stable base map and then overlay scenario meaning, because a single fixed drawing cannot tell a stranger what to do for a fire and for lightning at the same time. The failure of a one-point map shows up the moment the hazard itself blocks the assembly point, when weather makes open ground unsafe, or when the incident is in the very building a crowd was told to walk toward. Stable base information plus a scenario-driven action is the more honest design.
- The graphic should sit next to a short text: who gives the order, where people count off and how to report the emergency and summon help.
- For a large site the text portion matters more than for a single room, because it explains why the destination differs between an outdoor head-count point and an indoor weather shelter.
- Keep a consolidated site-level copy with a duty officer and issue it on demand during an incident.
Permanent layers every version must carry
Across parks, campuses and stadiums, five or six layers should be captured once and maintained, so that when a scenario changes you update one layer instead of redrawing everything. Verify these layers on the ground rather than trusting the drawing alone: terrain, buildings and fencing decide what a person can physically cross, and assembly points must sit clear of the hazard and of responder lanes.
A useful discipline is to maintain a public version and a separate responder version. The public version shows only what a civilian needs; hydrants, shutoffs and hazardous utilities belong on the staff and responder map, where they do not add clutter under stress.
- Base geography: true north, scale, site boundary, named buildings, plazas, parking, water features and elevation changes.
- Movement and egress: gates, doors, stairs, bridges, ramps and streets, each with a primary and an alternate path that does not narrow or dead-end where flows merge.
- Assembly and shelter: outdoor muster points plus alternates chosen out of harm's way and clear of fire lanes, as campuses do when they mark distinct emergency assembly areas.
- Accessibility: level, paved assembly options and assisted or refuge routes for people with limited mobility.
- Medical and response: first aid, AED, medical post, emergency vehicle access lanes and a rendezvous point for responders.
- Utility and hazard (responder version): hydrants, shutoffs, chemical storage, fuel and transformers.
Scenario layers decide whether people leave, shelter or redirect
The scenario layer is the one that changes. In a fire, occupants move away from the structure to an outdoor assembly point at a safe distance, and the emergency action plan adds accountability for every employee after evacuation plus a defined way to report the emergency. Lightning and severe weather invert that logic entirely: NOAA's National Weather Service warns that there is no safe place outside during a thunderstorm, and the correct move is to a substantial building with wiring and plumbing — or an enclosed, metal-topped vehicle — staying there 30 minutes after the last sound of thunder. A stadium or park map therefore needs to mark usable indoor shelter buildings and the time to reach them, not just outdoor collection points.
Hazardous-material releases and flooding are direction-dependent: sheltering inside or moving upwind and to higher ground can each be correct, so the scenario should carry alternate destinations selected by wind and flood assumptions. An active-threat event rarely ends at an outdoor assembly point at all; staff may need maps that help relocate or secure people and the communications channel for run-hide-fight guidance. Writing the scenario logic as a short matrix or text block beside the map lets a reader understand why the destination is different without a briefing.
- Never let one assembly point serve every emergency; validate each alternate against wind, flood and distance from the hazard source.
- Distinguish 'assembly for accountability' after a fire or building evacuation from 'safe shelter' during weather — they are different destinations.
- Provide at least two routes to each point, because the primary route can be cut off by the very incident that triggered evacuation.
Symbols and signs for people who arrive cold
Consistency in symbols is what lets a visitor interpret a map in seconds. Standards such as NFPA 170 define uniform symbols for emergency exits, assembly and hazard, and evacuation-diagram practice pushes for the same icons repeated from map to map so that recognition builds across buildings and sites. Practical map hygiene includes a north arrow, a readable legend, a 'you are here' marker and color logic — for example a solid green line to primary exits and a dashed line to secondary ones — with each symbol explained in a text block.
Most visitors to a park, campus or stadium will never study a map before an alarm, so the wall or site plan must be supported by directional signs at every decision point and by line-of-sight to the next marker. Hidden, outdated or cluttered signage does more harm than none. Use a public version that shows only civilian-relevant detail and keep hydrants, shutoffs and utilities on a separate staff map.
- Keep symbols and text at a uniform scale on each sheet and explain every symbol's meaning in the legend or text portion.
- Put a 'you are here' point on every posted copy and anchor each sign to its exact physical location.
- Place directional indicators at route junctions and exits, not only beside the wall map, so the path stays readable along the way.
Accessibility, operations and keeping the map true
Venues that host large crowds treat evacuation as an operational, staffed activity. FIFA's stadium guidelines call for egress routes with enough capacity for spectators, players and staff, places of reasonable safety — such as exit routes with about 30 minutes of fire protection — and a separate system for spectators requiring assistance, since lifts are not available for routine emergency egress. Coordination flows through a venue operations centre with public-address override and pre-scripted messages, and evacuation may be partial when the threat is local. University campuses apply the same discipline at a smaller scale when they assign distinct assembly areas per building and mark level, paved options for people with mobility limitations if the primary area sits on uneven ground.
A map is only as good as its last review. Because an emergency action plan must be reviewed whenever the plan or assignments change, tie map updates to the same triggers: after every drill, after any construction or rerouting, at the start of a new season or event type, and whenever wind, flood or fire assumptions change. Update the graphic and the text as one unit — the text that names who gives the order, where people count off and how to report is what turns a drawing into a procedure. Specific obligations vary by jurisdiction and venue type, so confirm them with the relevant fire authority and a qualified specialist.
- Verify accessibility physically: level hard surface, no curb conflicts, room for a stretcher or wheelchair at the assembly point.
- Schedule reviews before each season, after drills and incidents, and after any construction or change in route layout.
- Assign a named owner for map currency instead of leaving it to 'the organization' collectively.
Put it into practice
Site evacuation map audit: layers × scenarios checklist
A reusable review tool for an existing park, campus or stadium plan, or for accepting a new one. Walk each item and mark 'pass / fail / needs work'; a single fail means the map is not ready for service.
- Base is current and field-verified: north arrow, scale, legend, 'you are here'; boundaries, buildings, parking and terrain match the ground.
- Movement layer: gates and exits are named, every primary route has an alternate, and paths neither narrow nor dead-end where flows merge.
- Assembly and shelter: primary and alternate points are assigned per building or sector, clear of the hazard zone and of responder lanes.
- Weather scenario (lightning/severe weather): usable substantial buildings for shelter are marked with approximate travel time; no open outdoor point is labeled 'safe' in a thunderstorm.
- Hazmat and flood scenario: upwind and high-ground alternates are defined using prevailing-wind and flood-zone assumptions.
- Accessibility: a level, paved assembly option and an assisted or refuge route exist for people with limited mobility.
- Medical and response: first aid, AED, medical post, responder access lane and rendezvous point are shown on the operational layer.
- Responder map is separate: hydrants, shutoffs, hazardous and utility objects appear only on the staff version.
- Symbols and wayfinding are consistent, routes use solid/dashed green convention where applicable, and junction signs are visible and current.
- Text portion is attached: who gives the order, where the head count happens, how to report; leave / shelter / redirect logic is written down.
- Review date and a named owner are recorded; the map was updated after the last drill, incident and construction change.
Questions people ask
What layers should an outdoor or campus evacuation map contain?
Most practitioners separate six permanent layers: a geographic base (north, scale, boundaries, buildings, terrain), a movement and egress layer (gates, routes, alternates), assembly and shelter points, an accessibility layer for people with limited mobility, a medical and response layer (AED, first aid, responder access, rendezvous point) and a utility layer kept on the responder version. Scenario layers then sit on top to decide the destination and action for each hazard, such as fire, lightning, hazmat release, flooding or an active threat.
Why should the same outdoor assembly point not be used for a lightning storm and for a fire?
Because during a thunderstorm the open area is itself the danger. NOAA's National Weather Service states there is no safe place outside in a thunderstorm: people should move to a substantial building with plumbing and wiring, or an enclosed metal-topped vehicle, and stay there at least 30 minutes after the last thunder. A fire, by contrast, requires moving away from the burning structure to an outdoor assembly point for a head count. Routing both situations to one open point would put people in the most hazardous place during a storm.
How do I make an evacuation map usable by visitors who have never seen the site?
Rely on consistent, repeatable symbols (NFPA 170 standardizes many of them) plus basic map hygiene: a north arrow, a legend, a 'you are here' marker and color-coded primary and alternate routes. Then reinforce the map with directional signs at every decision point and maintain line-of-sight to the next marker, because visitors will rarely study a map before an alarm. Keep a clean public version and hold responder detail such as hydrants and shutoffs on a separate staff map so the public sheet stays readable.
What accessibility provisions belong on a large-venue evacuation map?
Provide level, hard-surfaced assembly points without curb conflicts, plus assisted or refuge routes for people who cannot move quickly. Stadium guidance (for example FIFA's) calls for a separate exit system for spectators requiring assistance, because lifts are not used for routine emergency egress and people may need a safe place to wait for help. Campuses often designate a level paved alternate assembly point when the primary one sits on uneven ground. Verify these options physically, including room for a stretcher or wheelchair.
How often should a site evacuation map be reviewed and updated?
Tie updates to the same triggers used to review an emergency action plan: after every drill, after any incident, after construction or rerouting, when building use changes, and at the start of a new season or event type. Also revisit when wind, flood or fire assumptions change. Stamp the map with a review date, assign a named owner for currency, and update the graphic and the explanatory text together. Exact mandatory intervals depend on local fire codes and the venue's occupancy classification.
Sources and further reading
Sources were checked when this page was generated. Confirm changing dates, rules and prices with the original publisher.
- 29 CFR § 1910.38 — Emergency action plans (OSHA)U.S. Government Publishing Office (eCFR)
- ASTM E2238-12 — Guide for Evacuation Route Diagram Signage (excerpt)Normservis / ASTM International
- Assembly Areas & Routes — Baskin Engineering, UCSCUniversity of California, Santa Cruz
- Lightning Safety (NOAA National Weather Service)NOAA National Oceanic and Atmospheric Administration
- Football Stadiums Guidelines — 5.4 Safety and SecurityFIFA
- Требования к планам эвакуацииГУ МЧС России по Пензенской области