Fact 🧞‍♂️

Why Do Indian Cars Have a Speed Warning Beep at 80 and 120 km/h?

Ever wondered why your car suddenly beeps at 80 or 120 km/h in India? It’s not a bug—it’s a government-mandated safety feature. Learn the logic behind it in this SpotGenie Fact.

Pratik Kamble

23 Jul 2025 — 1 min read

Why Do Indian Cars Have a Speed Warning Beep?

🚨 That Beep Isn’t a Bug. It’s the Law.

Driving on a highway and suddenly…
BEEP.
Then again at 120 km/h?
BEEEEP.

It’s not your car acting up — it’s a mandatory safety alert system as per the Indian government’s AIS-145 safety norms.

📜 What Is AIS-145?

In 2019, India’s Ministry of Road Transport & Highways (MoRTH) made it mandatory for all new vehicles to include:

Speed Alert System
Reverse Parking Sensor
Seat Belt Reminders
Manual override for central locking

This was introduced under the AIS-145 safety standard to reduce road fatalities.

🔊 Here’s How the Speed Alert Works:

At 80 km/h → a single short beep sounds once and repeats occasionally.
At 120 km/h → a continuous beep is triggered until the speed drops below that limit.

🧠 The goal? Encourage drivers to maintain safe, legal speeds, especially on highways and expressways.

🧩 Why Is This Needed?

India reports one of the highest numbers of road fatalities in the world. Over-speeding is a leading cause.
These alerts aim to build speed awareness and curb reckless driving, especially in smaller cars that may not feel dangerously fast.