Railway Highlighter for Google Maps

Highlights train tracks (rail, subway, tram, etc.) on Google Maps using an overlay from OpenStreetMap data.

This extension lets you view railways—including trains, trams, subways, light rail, monorails, and narrow-gauge lines—directly on Google Maps. How it works: Click the floating “Fetch Rails” button to display all railways in your current map view. Rails appear in bright pink with a white outline. No automatic updates—just fetch whenever you want to see the latest lines for your area. Features: 🚉 Highlights all railways in your current map viewport. 🌍 Works at zoom level 7 and above; zoom out too far and no data will appear. ⏳ Shows a loading indicator while fetching. ⚠️ Handles errors gracefully and suggests zooming in if the query is too large. Technical details (for curious users 🛠️): Uses Overpass API to fetch OpenStreetMap railway data. Adds an SVG overlay on top of Google Maps for smooth rendering. Includes debug logging for troubleshooting. Important: 🗺️ Works only on Google Maps. Click the button after zooming or moving the map to update the railway overlay.