Cars in America have red turn signals, but most other countries use amber, this is why
- Unlike the rest of the world, America uses all-red turn signals
- US Federal law allows manufacturers to use red or amber lights
- Here’s why American manufacturers insist on all-red signals
Published on May 23, 2025 at 7:05 PM (UTC+4)
by Keelin McNamara
Last updated on May 23, 2025 at 9:06 PM (UTC+4)
Edited by
Emma Matthews
America does things a little differently when it comes to cars in general, and in particular when it comes to turn signals.
For one thing, it is legal in America to turn right at a red light.
For another, America uses red turn signals.
The rest of the world uses amber signals instead – so why is there a difference?
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If you have ever driven a car in Europe or the UK, you might have noticed the color of turn signals.
That is because European Union regulations mandate the use of amber signals.
The Economic Commission for Europe believes that amber signals are more visible on the road.
Interestingly, America’s own data backs up the argument for using amber.
The National Highway Traffic Safety Administration conducted a study.
According to its study, amber signals can reduce the risk of being rear-ended by up to 28 percent.
Given the data and the reasoning, you might now be wondering why America doesn’t follow in changing colors.
Well, there’s actually a very simple reason for it.
Unlike international regulations, US regulatory bodies allow red turn signals.
In fairness, the Federal Motor Vehicle Safety Standard provides a lot of leeway.
According to those regulations, US manufacturers have the choice of using either red or amber signals.
At this point, you’re probably wondering why the US still insists on using red turn signals.
Well, there’s a couple of different reasons for this lack of change.
Aside from the legislative flexibility, the biggest reason is simple – they’re cost-effective.
Red lights allow a single bulb to be used for both brake lights and turn signals.
Amber lights, on the other hand, necessitate the use of separate amber and red bulbs.
The other main reason for this difference in the US comes down to tradition.
Ever since the advent of the car industry in America, turn signals have been red.
Many manufacturers might simply be used to the styling features of having red turn signals.
On the bright side of the bulb, you still have a 72 percent chance of not getting rear-ended.
Keelin McNamara is a content writer at Supercar Blondie from Ireland, covering cars, technology, and lifestyle. Despite being a Law graduate, he discovered his passion for journalism during the COVID-19 pandemic, and has worked in the industry ever since. Outside of work, he is an avid MotoGP fan, and is a self-confessed addict of the sport.
