Why Are Indian Highway Signboards Green and City Boards Blue?

Ever noticed the color of signboards change between highways and cities in India? Discover the logic behind India’s road signage colors with SpotGenie.

🧠 Did You Know?

In India, green signboards are for national highways, while blue signboards are for city roads or municipal routes.
This isn’t a design choice — it’s based on international signage standards and practical visibility logic.

The colors help drivers instantly recognize the type of road they’re on and adjust driving behavior accordingly.

🟩 Why Green for Highways?

• Green is the standard for long-distance routes globally (including the U.S. Interstate system).
• It’s less reflective, causing less glare for drivers on high-speed highways.
• Helps guide navigation clearly across states and major junctions.

🔵 Why Blue for City Roads?

• Blue signs are used for urban roads, bus routes, and metro signages.
• Blue is associated with local governance and city-level authority.
• Easy to read from a short distance — suitable for city driving speeds.

You’ll also find brown boards for tourist sites and white boards in rural areas — all part of India’s updated IRC (Indian Roads Congress) guidelines.

🧞‍♂️ SpotGenie:

Just like signs help you navigate roads, SpotGenie tags help others navigate urban issues.
If your parked vehicle is blocking a lane or wrongly stationed near a sign board, anyone can scan your tag and alert you immediately.

✔️ Read the signs.
✔️ Respect the space.
✔️ Respond faster with SpotGenie.

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🛣️ More SpotGenie Facts That Decode India’s Road Symbols and Rules

• Why Do Indian Roads Have Black & White Stripes on the Sides?
• Do India’s Traffic Lights Have a Gender Bias?
• India’s Speed-Free Highway – Truth Behind the Expressway Rumor
• India’s Shortest National Highway Is Just 5 Km Long
• Get SpotGenie – The Smart QR Sticker That Speaks for Your Vehicle

This article is part of the SpotGenie Fact series — exploring the logic, history, and design of India’s roads, signs, and signals that guide us every day.