2026

HSL real time

Overview

HSL real time shows live vehicle locations for Helsinki public transport. It is a focused map-oriented front end that pulls real-time transit data and keeps vehicles moving on the map as positions update.

I wanted a small, useful Helsinki-local tool that makes the transit network feel visible instead of abstract.

Key Features

• Live vehicle positions on a map
• Focused Helsinki public transport view
• Lightweight React front end
• Simple deployment footprint

Tech stack

• Front-end: React
• Deployment: Vercel

What I learned

• Working with live transit position feeds
• Keeping a map UI responsive under frequent updates
• Shipping a narrow utility app quickly