Upcoming Blue Light Show1–2 Jul · Olympia, London · See us @ stand Q5 for live demos Event details ↗

Shared overlays

Draw a cordon, RVP or search sector once and every crew sees it on the same map they navigate from, updated in real time and synced across every device.

When an area is being evacuated or there’s an incident at a large event, how does every responder on the ground know the detail they need?

Today, it’s usually a radio message, half-heard at speed. Or a screenshot of Google Maps drawn over and sent to an Inbox that gets checked when the shift’s over. Blue Light Maps replaces all of that with a shared map layer that every crew member can see, edit, and navigate from. It updates in real time, on the same device they’re already using.

How it works

Any crew member can open the overlay and draw on it: drop a pin, draw a boundary, mark a hazard, label an area. Whatever they draw instantly appears on every other device connected to the same overlay. No descriptions to relay or misread. If someone can draw it, everyone can see it.

The officer first on scene marks the RVP, and arriving crews navigate straight to it. A firefighter flags a blocked access route, and every appliance behind them knows before they turn the corner. A supervisor draws a search sector, and the team on the ground sees their area without a briefing.

Plan from a web browser

Not everything happens in real time on scene. Pre-planned events, public order operations, and multi-agency responses often have a planning phase where the operational picture is built in advance.

Our web-based map lets planners and supervisors draw overlays from a browser. Build access routes, medical points and vehicle marshalling areas in a control room, then push them to every frontline device before the operation begins.

Monitor, rugged tablet and mobile sharing the same map overlays

Live location sharing

Enable location sharing and supervisors, control rooms, and crew members can see where colleagues are on the map in real time. No more calling in positions one by one.

It’s optional and crew-controlled: enabled per-operation, or left on continuously, depending on your service’s policy.

Live location sharing shown on a mobile device

Use cases

Planned events

Marathons, festivals, football matches, protests. Share medical points, access routes, road closures, and RVPs with every crew before they arrive. As the event develops, update the overlay and everyone sees the change. No re-briefing required.

Missing person searches

Divide search areas across teams and watch coverage build in real time. Each team can see which sectors are complete, which are in progress, and where gaps remain. No clipboard at the command post, no radio check every 15 minutes.

Firearms incidents

Share no-go zones instantly on the maps crews are already using for unrelated calls. An armed incident in one area triggers an overlay that every nearby unit sees, whether they’re responding to it or not. Staff safety, without relying on a broadcast that may not reach everyone.

Large-scale incidents

Major RTCs, building fires, flooding. The first crew on scene marks access points, hazards, and staging areas, and every subsequent unit arrives with the picture already built. As the incident develops, the overlay develops with it.

Mutual aid and cross-border responses

When crews from neighbouring services attend an incident, they’re working from the same map. No need to learn local geography from a verbal briefing. The overlay shows what they need to know.

Works across all your devices

Shared overlays sync between phones, tablets, Toughbooks, and the web interface. Everything works offline too: if a device loses signal temporarily, it keeps the latest overlay state and re-syncs when the connection returns.

More capabilities

Blue Light Routing

Developed alongside emergency crews, our routing algorithms understand what helps first responders get to scene quicker.

Learn more →

Blue Light Alert®

We can pre-warn nearby drivers that a blue-light vehicle is approaching, so traffic reacts sooner and clears the path for emergency vehicles.

Learn more →

Trusted data

The geospatial data your control room trusts, on the responder's map.

Learn more →

Ready when you are

Equip responders with smarter maps.

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Trusted by responders · Operationally proven

Summary

Blue Light Maps offers a 'Shared Overlays' feature for emergency responders, enabling real-time map collaboration across all devices. Responders can draw, mark hazards, or define areas on a shared map that updates instantly for every crew member, improving situational awareness during incidents. The platform also supports pre-planning operations via a web interface and includes optional live location sharing.

Key Facts

Frequently Asked Questions

How do shared overlays help responders on the ground during an incident?

Shared overlays replace radio messages or screenshots by providing a map layer that every crew member can see, edit, and navigate from, updating in real time on their devices.

How does drawing on an overlay work for responders?

Any crew member can open an overlay and draw on it, such as dropping a pin, drawing a boundary, marking a hazard, or labeling an area, and these changes instantly appear on every other connected device.

Can planners create overlays before an operation begins?

Yes, a web-based map allows planners and supervisors to draw overlays from a browser, enabling them to build access routes, medical points, and vehicle marshalling areas in advance and push them to frontline devices.

Is live location sharing mandatory for responders?

No, live location sharing is optional and crew-controlled, enabled per-operation or left on continuously depending on service policy.

How do shared overlays function across different devices and in offline situations?

Shared overlays sync between phones, tablets, Toughbooks, and the web interface, and they work offline by keeping the latest overlay state and re-syncing when the connection returns.

Related Entities

Companies
Blue Light Maps
Products
Blue Light Maps, Shared overlays, Blue Light Routing, Blue Light Alert
Locations
Olympia, London
Technologies
Google Maps