London Congestion Charge Notification App
Published on Jul 18, 2025 by Tom Gracey.
System: iOS and Android app to provide alerts when entering the London Congestion Zone
Client: Outbound BPO Ltd
Technologies: Rust, Javascript, Cordova
Problem: Drivers in London may find it difficult to keep track of and avoid the London Congestion Zone boundary
Solution: The system takes advantage of an Open Street Maps tiling server and Cordova's Geolocation Plugin to track the user's location in London. A push notification is sent when user approaches the Congestion Zone boundary.
