Stuehrenberg — Smart City Traffic Management
Real-time control and live video for smart city street infrastructure.
The Challenge
Building real-time control for distributed urban infrastructure
A German smart city company needed a real-time web platform to remotely manage and monitor street signals and traffic cameras—with instant updates and live video feeds across a distributed urban infrastructure. Latency was critical: signal control commands needed sub-second response times, and camera feeds had to stream with minimal delay to be operationally useful.
Our Approach
Next.js + NestJS with real-time WebSocket and WebRTC streaming
Modern Web Stack
Built the frontend with Next.js for a fast, server-rendered control dashboard, and the backend with NestJS for type-safe, scalable API handling.
Socket.io Real-Time Control
Integrated Socket.io for bidirectional real-time communication, enabling instant two-way signal control between the operator dashboard and physical street devices.
WebRTC Video Streaming
Implemented WebRTC for secure, low-latency live video streaming from traffic cameras, giving operators a real-time view of urban infrastructure.
Multi-Node API Layer
Created scalable APIs designed to manage and monitor hundreds of urban nodes simultaneously, with health monitoring and alerting built in.
The Solution
A production-ready smart city platform managing live infrastructure
The platform is deployed and actively monitoring real city infrastructure in Germany. Signal control operates with sub-second response times, live camera feeds stream in real-time via WebRTC, and the system scales to manage hundreds of urban nodes from a single web interface.