Blue Light Maps vs the navigation in your CAD app

Your mobilising or MDT app already shows crews the incident. The drive that follows is most of the response, and it deserves the best navigation you can get, chosen on its own merits.

Last checked

The short version

The drive to scene is the largest stage of a response, taking about two-thirds of the time in fire service figures. It's where better routing saves the most minutes, yet it's often a single feature inside a CAD or MDT app chosen for other reasons.

In-cab apps usually hand off to the phone's maps app, build on a general-purpose map SDK, or build their own routing. Few specify that routing uses blue-light exemptions.

Blue Light Maps lets you choose the best navigation for the drive, inside your existing app through our SDK or alongside it. Because it isn't tied to one supplier, you keep it, and your crews can keep what they know, when you next change CAD or MDT supplier.

01 At a glance

Side by side

Blue Light Maps and Navigation in a typical CAD or MDT app compared. CAD app navigation details checked October 2026.
Where the route comes from Blue Light Maps An emergency routing engine built for response driving, available inside your app through our SDK. Navigation in a typical CAD or MDT app The phone's own maps app, a general-purpose map SDK, or the supplier's own routing. It varies by supplier and isn't always stated.
Blue-light exemptions Blue Light Maps Bus lanes, bus gates, restricted turns, contraflow and pedestrianised zones in emergency mode. Navigation in a typical CAD or MDT app Consumer maps apps list no emergency mode. Mapbox, a widely used map SDK, lists driving, traffic-aware driving, walking and cycling profiles, with no emergency mode or way to permit restricted manoeuvres.
Vehicle size and weight Blue Light Maps Profiles for car, van or carrier, patient transport and fire appliance. Exemptable weight limits are crossed and marked for review. Navigation in a typical CAD or MDT app Consumer maps apps have no vehicle dimensions. Mapbox accepts maximum height, width and weight, which it treats as limits to avoid.
Staying in the incident Blue Light Maps With the SDK, navigation runs inside your app, so crews never leave the incident screen. Navigation in a typical CAD or MDT app A hand-off opens a separate maps app, so crews switch away from the incident details to drive.
When you change CAD or MDT Blue Light Maps Stays. Blue Light Maps connects through our SDK, our CAD API, the Webfleet API or deep links, so it moves with you to the next platform. Crews keep the routing, profiles and layers they know. Navigation in a typical CAD or MDT app Navigation is part of the supplier's product, so changing supplier usually means changing navigation too.
Speeds and ETAs Blue Light Maps Road speeds are learned from anonymised telematics of emergency vehicles driving on blue lights, so ETAs reflect response driving and routes favour roads that suit it: wider, with fewer turns. Navigation in a typical CAD or MDT app Depends on the routing behind the app. Consumer maps apps and general-purpose SDKs model ordinary traffic.
Without signal Blue Light Maps Map data and route calculation live on the device. Navigation in a typical CAD or MDT app Depends on the maps app or SDK. Consumer apps have limits offline.
Map data Blue Light Maps Monthly responder map updates in each country we cover, including restrictions, addressing and marker posts. Navigation in a typical CAD or MDT app Depends on the map provider behind the app.
Working as a team Blue Light Maps Shared ETAs, live location sharing, custom layers such as hydrants and vulnerable persons, and Blue Light Alert warnings to drivers ahead via Waze. Navigation in a typical CAD or MDT app Varies by supplier.

CAD app navigation details as published, checked October 2026. Sources below.

02 In detail

Where response time is lost

A Typical Emergency Response*
Call handling · 1m 24s 15%
Crew turnout · 1m 30s 17%
Measured. Audited. Optimised.
Drive to scene · 6 min 11 seconds 68%
Treated as a fixed cost. Increasing year on year.
*MHCLG, Detailed Analysis of Response Times to Fires, England — year ending March 2025 (FIRE1001).

Call handling and turnout are measured, audited and tuned to the second. The drive to scene takes more than twice as long as both combined. Yet navigation is often the feature nobody chose. It comes with whichever CAD or MDT platform won the contract, picked for dispatch, messaging and risk information.

That’s a reasonable way to buy a mobilising system. It’s not a good way to buy the tool that decides how long the biggest stage of every response takes. Blue Light Routing explains what emergency routing changes on that drive.

How CAD and MDT apps handle navigation

Mobilising and MDT apps are built around the incident: the address, the call type, the risk information and the crew’s status. Navigation is usually one feature among many, and it tends to be handled in one of three ways.

Handing off to the phone’s maps app. The app shows the incident on a map and passes the location to Google Maps, Apple Maps or Waze for turn-by-turn directions. Several US-market responder apps document exactly this. It’s quick to build and familiar to crews. It also means the route comes from an app built for ordinary traffic, with no emergency mode, and crews leave the incident screen to drive.

Building on a general-purpose map SDK. The app draws its own map and calculates routes with a commercial SDK. The navigation looks native, but the routing rules belong to the SDK provider. Mapbox is a good example. Its Directions API offers driving, traffic-aware driving, walking and cycling profiles. It can avoid motorways, tolls and ferries, and respect maximum height, width and weight. It has no emergency profile and no option to allow a bus gate or a banned turn. An app built on it can be excellent at everything else and still route a fire appliance the way it would route a delivery van.

Building its own routing. Some suppliers build or license routing specifically for emergency vehicles. In Germany, at least one dispatch platform publicly describes blue-light routing that uses roads closed to ordinary traffic. Among the other suppliers we’ve reviewed, we haven’t found one that publicly states its routing uses emergency exemptions such as bus lanes and bus gates. That doesn’t mean none do. It means it’s worth asking.

Questions to ask your supplier

  • Whose routing engine calculates the route? Is it your own, a commercial SDK, or the phone’s maps app?
  • In emergency mode, will it route through a bus gate or bus lane? Will it take a no-right-turn? Can you show us one in our area?
  • How does it treat weight limits? Does it avoid every one, or can it cross environmental HGV limits that exempt emergency vehicles?
  • Does navigation run inside the incident screen, or does it open another app?
  • Where do road speeds and ETAs come from: ordinary traffic, or emergency vehicles driving on blue lights?
  • Does it keep routing with no signal?
  • How often are restrictions in the map updated, and from what data?

If the answers are vague, the route your crews get on blue lights is probably the same one a member of the public would get.

Choose navigation on its own merits

Most services already buy the rest of their estate this way. Radios, vehicles, CAD and records systems each come from the specialist that does that job best, and they’re connected through integrations. Navigation can be bought the same way. Choose it for how fast and how safely it gets crews to scene, then connect it to whatever mobilises them.

Keep it when you change supplier

CAD and MDT contracts run for years, then go back out to tender. When navigation is built into the platform, a re-procurement changes it too. Crews relearn the map, vehicle profiles are set up again, local layers are rebuilt, and routing quality becomes a side effect of a decision made about something else.

Blue Light Maps sits outside that cycle. It connects through an SDK, an API or a deep link, so the next platform can connect to it the same way. Your vehicle profiles, routing policy, custom layers and the habits crews have built stay where they are. Only the integration changes.

Adding emergency routing without replacing anything

You don’t need to change your CAD or MDT platform to get emergency routing. Blue Light Maps connects in whichever way suits your supplier:

  • Inside the app, through our SDK. System integrators build Blue Light Maps into their own products, so crews get emergency routing on the incident screen. Airbus offers it this way in SAFEcommand ScResponse.
  • Alongside it, through our CAD API. Your CAD sends incidents to callsigns, crews accept in Blue Light Maps, and acceptance flows back to the control room.
  • Through the Webfleet API, if your dispatch or fleet system already sends jobs that way.
  • Through deep links, so any app can hand a destination to Blue Light Maps instead of a consumer maps app. It’s a small change that swaps a car’s route for an emergency one.

If you’re a supplier, we’d like to talk. If you’re a service, tell us what you run today and we’ll work out the shortest path with your supplier. As always, it starts with a 30-minute walkthrough and a trial in your own area.

03 Which fits

Who each is best for

Choose Blue Light Maps if

  • You want to choose navigation on its own merits, for the stage of the response where time is actually lost.
  • You expect to re-procure CAD or MDT in the next few years and don't want crews relearning navigation each time.
  • Your crews mobilise from an app that shows the incident but routes like a car, or not at all.
  • You want emergency routing inside the app crews already use, not a second app.
  • Your supplier is open to integrating an SDK, or already does, as Airbus does in SAFEcommand ScResponse.

Navigation in a typical CAD or MDT app may suit you better if

  • Your supplier's navigation already routes using your exemptions. Ask them to show you a route through a bus gate.
  • Crews only need the incident location pinned, and they know the ground well enough to route themselves.

04 Common questions

Questions about CAD app navigation

How much of an emergency response is the drive to scene?

In published fire service figures for the year ending March 2025, the drive to scene averaged 6 minutes 11 seconds, 68% of the total response. Call handling and crew turnout took 32% between them. Better routing affects the largest stage.

Do CAD and MDT apps include emergency routing?

It varies. In-cab apps usually hand off to the phone's maps app, build on a general-purpose map SDK, or build their own routing. Few state publicly whether their routing uses blue-light exemptions, so ask your supplier to show you a route through a bus gate.

Can Blue Light Maps be added to an existing CAD or MDT app?

Yes. System integrators can build it in with the Blue Light Maps SDK, as Airbus does in SAFEcommand ScResponse. It can also run alongside your app through the Blue Light Maps CAD API, the Webfleet API or deep links.

What happens to navigation when we change CAD supplier?

If navigation is built into the CAD or MDT platform, it usually changes with it. Blue Light Maps connects through an SDK, an API or a deep link, so vehicle profiles, routing policy, custom layers and crew habits stay the same. Only the integration changes.

Sources

Everything we say about CAD app navigation comes from their own published material, checked on the dates shown. Products change. If something here is out of date, tell us at hello@bluelightmaps.com and we'll correct it.

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