Zone detection
Detects entry and exit via GPS position, direction, and route geometry.
About the app
Stay in control of average speed on the road
SpeedCam BG uses local data for average-speed sections and your current GPS position to detect zone entry and exit, calculate average speed, and show the limit by vehicle type.
- Zone entry/exit detection via checkpoints and direction of travel
- Current speed, average speed, and recommended speed in real time
- Limits for car, truck, bus, and motorcycle
- Section map and history of recorded violations
How it works
How the system works
On every GPS sample the app evaluates proximity to checkpoints, keeps an active session in the zone, and updates the warning based on average speed versus the limit.
Average-speed calculation
Accumulates distance and time and shows a corrected average speed.
Warning
Shows a risk level - from normal to heightened attention - based on average versus the limit.
Modes of use
Three ways to use it
SpeedCam BG is designed for different driving scenarios. The same location and average-speed engine powers three separate interfaces.
Mode 01
Android Auto
Integration with the in-car display via Android Auto. Zone and average-speed info appears on the head unit while the phone stays connected.
- POI templates for an active or nearby zone
- HUD screen for live metrics while driving
- Works with location permissions, including background location when needed
Mode 02
Overlay on navigation
A floating layer over other apps - e.g. Google Maps or Waze. Track average speed without leaving your main navigation.
- Collapsed or expanded bubble with key metrics
- Can be repositioned on screen
- Requires permission to draw over other apps
Mode 03
Standalone app
The full phone UI. Best when the app is the main screen while traveling, or when you want a detailed view before and after the zone.
- Map of sections and current position
- Active zone, warning, and full-screen HUD mode
- Settings, vehicle type, and violation history
Technology
Technology stack
Built as a native Android solution with a modern UI layer and dedicated components for location, maps, and Android Auto.
Kotlin and Jetpack Compose
Native Android Kotlin with a declarative UI via Jetpack Compose and Material 3.
Google Play Services Location
Precise GPS updates via the Fused Location Provider for zone detection and average-speed calculation.
Google Maps
Visualization of sections, routes, and current position via Google Maps Compose.
AndroidX Car App
Official Car App API for Android Auto - POI and HUD templates on the in-car screen.
Foreground services
Foreground services for continuous location tracking and for overlay mode over other apps.
Local JSON data
Official average-speed sections load from packaged local data - no online server required for the core feature.
Download SpeedCam BG
Available for Android. Supports Android Auto, navigation overlay, and standalone use.