Yellow plates are standard in most of Europe, parts of Asia, and a few other regions worldwide

Yellow license plates appear on vehicles across roughly 80 countries, concentrated in Europe and Asia. The colour is not random — it signals to other drivers that a vehicle is registered and insured under that country's rules. The pattern varies: some countries use yellow for all vehicles, others only for commercial or taxi fleets, and a few use yellow as a second plate for specific purposes.

The reason yellow became standard has to do with visibility and international agreement. In 1968, the Vienna Convention on Road Signs and Signals recommended yellow as the background colour for the rear registration plate in countries that chose to adopt it. Yellow reflects light well in low-visibility conditions and contrasts sharply with black lettering, making plates easier to read at distance and in darkness. Not every country signed on, which is why you see white plates in North America, Australia, and parts of Asia instead.

Key Takeaways

  • Most European Union countries use yellow rear plates as standard, though front plates vary by country — some are white, some yellow, some split between the two colours.
  • Japan, South Korea, and several other Asian countries use yellow plates for taxis and commercial vehicles while keeping white plates for private cars.
  • The Vienna Convention of 1968 recommended yellow as the international standard, but adoption was voluntary and remains incomplete.
  • Yellow plates are not a legal requirement everywhere they appear — some countries use them by tradition or for specific vehicle categories only.

European countries with yellow rear plates

Nearly all European Union member states use yellow rear plates. This includes France, Germany, Spain, Italy, Poland, Netherlands, Belgium, Austria, Czech Republic, Hungary, Romania, Bulgaria, Croatia, Slovakia, and Slovenia. The front plate varies: some countries use white, some use yellow, and some allow either. The EU flag and country code appear on the left side of the plate in all cases.

Non-EU European countries follow different rules. The United Kingdom uses white rear plates and white front plates — it did not adopt the Vienna Convention standard. Russia, Ukraine, and Belarus use white plates. Switzerland, Norway, and Iceland use white plates with a blue EU-style flag section on the left. Turkey uses white plates. The pattern reflects each country's own road regulations rather than a single European rule.

Asian countries that use yellow plates

Japan uses yellow rear plates exclusively for taxis, commercial vehicles, and rental cars. Private vehicles have white rear plates. The yellow colour signals to other drivers that the vehicle is for hire or business use. South Korea follows a similar system: yellow plates mark taxis and commercial vehicles, while private cars use white plates.

China uses yellow plates for commercial vehicles and buses, with white plates for private cars. Hong Kong uses white plates for private vehicles and yellow for taxis and commercial use. Thailand uses yellow plates for taxis and some commercial vehicles. Vietnam uses white plates for most vehicles but yellow for certain commercial categories. In each case, the colour communicates the vehicle's registration category rather than serving as a universal standard.

Countries outside Europe and Asia with yellow plates

Brazil uses yellow rear plates and white front plates on all vehicles — a legacy of its own road regulation history rather than Vienna Convention adoption. The yellow rear plate is paired with a blue front plate in newer vehicles that display the Mercosur standard format. South Africa uses yellow rear plates on all vehicles as part of its national registration system.

A few other countries use yellow for specific purposes. Some Middle Eastern countries use yellow plates for taxis. Certain Caribbean nations adopted yellow plates through colonial or trade relationships. The presence of yellow plates outside the Vienna Convention framework shows that the colour choice was driven by practical visibility needs as much as by international agreement.

Why some countries rejected yellow plates

The United States, Canada, and Australia all use white rear plates despite the Vienna Convention recommendation. These countries established their own registration standards before 1968 or chose not to adopt the convention. White plates remain standard in North America and Australia because changing the entire national fleet would be costly and disruptive. Individual states and provinces can set their own plate colours within these countries, but white dominates.

Some countries that signed the Vienna Convention later abandoned yellow plates or never fully implemented them. India uses white plates for private vehicles and yellow for commercial vehicles, but this system predates the convention. The choice to use or reject yellow plates reflects each country's regulatory history, cost considerations, and practical experience with plate visibility in local driving conditions.

How to identify a vehicle's registration category by plate colour

In countries where yellow plates signal commercial or taxi use, the colour tells you the vehicle's legal status at a glance. A yellow plate in Japan means the vehicle is registered for business or hire. A yellow plate in South Korea indicates a taxi or commercial registration. In European countries with all-yellow plates, the colour carries no information about the vehicle's use — it is straightforward the national standard.

The front and rear plate combination also matters. Some countries use yellow rear and white front, which creates a two-tone effect. Others use yellow for both. A few use white front and yellow rear. The specific combination depends on that country's regulations. If you are renting a vehicle abroad or driving across borders, checking the plate colour and format will tell you whether the vehicle is registered locally or imported, and in some cases whether it is a commercial or private registration.

Frequently Asked Questions

Why is yellow better for visibility than white?

Yellow reflects light more efficiently than white in low-light conditions and creates stronger contrast with black lettering. This makes the plate easier to read from a distance or at night. White plates work adequately in daylight but yellow performs better in fog, rain, and darkness — which is why the Vienna Convention recommended it for international road safety.

Can I use a yellow plate in a country that uses white plates?

No. Your vehicle must display the registration plate format required by the country where it is registered. If you are driving in a country with different plate standards, your vehicle will still show the plates from its home country. Importing a vehicle to a new country requires re-registration with that country's plate format.

Do all European countries use yellow rear plates?

Most EU countries do, but not all European countries. The United Kingdom, Switzerland, Norway, Iceland, Russia, Ukraine, and Belarus use white plates. The Vienna Convention was voluntary, so each country made its own choice. Even within the EU, front plate colours vary — some countries use white front and yellow rear, others use yellow for both.

What does a yellow plate mean in Japan or South Korea?

In both countries, a yellow plate indicates the vehicle is registered for commercial use, taxi service, or rental purposes. Private vehicles have white plates. The colour is a quick way for other drivers and law enforcement to identify the vehicle's registration category without checking documents.

Are yellow plates required by international law?

No. The Vienna Convention recommended yellow as a standard, but adoption was voluntary. Each country sets its own registration plate requirements. Yellow plates are standard in most of Europe and parts of Asia, but white plates remain legal and standard in North America, Australia, and several other regions.