Skip to main content

Quit honking! Mumbai tests traffic signals that stay red if you hit your horn

Drivers in the Indian city of Mumbai seem to have the idea that if you honk your horn at a red signal, it’ll switch to green more quickly.

But the pointless behavior is only serving to fill busy neighborhoods with a wall of noise that’s not only annoying but also bad for your health.

Determined to quiet things down a bit, the city’s cops came up with an ingenious idea that forces drivers to wait even longer at the lights if they insist on honking their horns.

The so-called “punishing signal,” which was set up at several busy road junctions in Mumbai at the end of last year, uses decibel meters attached to traffic signal poles. When the meters register noise levels greater than 85 decibels, the countdown timer on the red signal resets to 90 seconds, keeping everyone stuck at the lights for even longer.

Local police, who describe Mumbai as “the honking capital of the world,” have even come with a snappy catchphrase for its innovative system: “Honk more, wait more.”

A slickly edited video (below) showing the punishing signal in action has been viewed more than three million times and received 89,000 likes since Mumbai Police posted it on Twitter about a week ago. It shows bemused drivers gradually realizing what’s going on, apparently prompting them to lay off the honking. The video ends with the line: “Feel free to honk … if you don’t mind waiting.”

A system that discourages endless honking is all well and good, but sorting out the road system would surely be a more welcome solution for Mumbai’s stressed-out drivers. The 2019 TomTom Traffic Index ranks Mumbai as the fourth most congested city in the world, with Bengaluru, also in India, ranked top. Manila in the Philippines is the second most congested city on the planet, with Bogota in Colombia ranking third. According to TomTom, America’s most heavily congested city is — you guessed it — Los Angeles, which shows up in 31st place in the global rankings. The least congested capital city is Abu Dhabi in the United Arab Emirates, according to TomTom.

The punishing signal is currently part of a trial, but it could become a permanent feature in Mumbai and other cities in India once the system’s effectiveness has been fully assessed.

Trevor Mogg
Contributing Editor
Not so many moons ago, Trevor moved from one tea-loving island nation that drives on the left (Britain) to another (Japan)…
Mercedes-Benz G580 first drive: old-school off-roader goes electric
2025 Mercedes-Benz G580 from three quarter view.

American car buyers mostly know Mercedes-Benz as a luxury brand. But for decades, the automaker has also produced the tough, rugged G-Class (also known as the Geländewagen or G-Wagen), an SUV not afraid to get its leather upholstery muddy. And now, this iconic Mercedes is going electric.

The 2025 Mercedes-Benz G580 with EQ Technology — the final name of the SUV previously known as the EQG — isn’t the first electric off-roader. The Rivian R1S and R1T and GMC Hummer EV have proven that electric powertrains and off-roading are a great combination. But the electric G-Wagen is different because it’s based on an internal-combustion model — and a very traditional one at that.

Read more
Honda believes hydrogen semi trucks will make the case for fuel cells
Honda hydrogen fuel-cell semi truck.

Honda remains committed to hydrogen fuel-cell vehicles, but the market for those vehicles remains limited. So Honda is looking at other uses for fuel cells -- including commercial trucks.

To show how that could work, Honda converted a semi truck to fuel-cell power, replacing its diesel engine with three fuel-cell modules. Together, the three modules produce a combined 321 horsepower, and can propel the truck to a top speed of 70 mph. There's enough onboard hydrogen storage capacity for a 400-mile range with a full load, Honda claims.

Read more
Mercedes-Benz G580 vs Rivian R2: Is the much cheaper Rivian actually better?
2025 Mercedes-Benz G580 from three quarter view.

Mercedes-Benz has finally taken the wraps off of the new "Mercedes-Benz G580 with EQ Technology." Yeah, it's a mouthful, but it's basically a new electric G-Wagon. It looks a lot like the G-Wagon you know and love, but with an electric powertrain and a battery. It's not the only electric SUV out there, however, and there are some great ones -- like the Rivian R2.

Both the Mercedes G580 and the Rivian R2 have a lot going for them, but they also approach the electric SUV slightly differently. Is one better than the other? I put the two head-to-head to find out.
Design
The approach that the two vehicles take to design is quite different -- and you might like one better than the other.

Read more