Can I use number plates if I cannot read them?

Yes — most of the information is in proportions and colour, which survive at low resolution. The long narrow European plate, the squarer North American one and the EU blue band are all identifiable without reading a character.

Reading Number Plates and Vehicles to Place a Country

You rarely need to read the characters. Plate proportions, colour bands and the local vehicle mix narrow a guess faster than most people expect.

2 min read

Number plates look like a clue you cannot use, because at street-level resolution the characters are usually unreadable. That is fine — almost all the information is in the shape and colour, which survive at any distance.

Proportions first

Plates come in a small number of standard aspect ratios and they cluster geographically. The long, narrow European plate is immediately distinguishable from the squarer North American one, and both differ from the taller plates used in parts of Asia and the Gulf. This is a shape judgement, not a reading one, and it works from a long way off.

Colour and bands

A blue band on the left edge indicates the EU and several neighbours; the country letters on it are usually unreadable but the band itself is not.
Yellow rear plates with white fronts point to the UK, the Netherlands and a few others.
Black plates with white characters are common across parts of Africa and Asia and were historically used elsewhere.
Red or green plates usually mean a special category — temporary, diplomatic, commercial — and their existence is itself a regional tell.
A coloured strip at the top or a different-coloured left block appears in several Latin American and Asian systems.

The vehicle mix

The distribution of models is national, because import rules, taxes and manufacturing differ. You do not need to identify models individually; the aggregate impression is enough. A street of small hatchbacks reads differently from a street of pickup trucks, which reads differently from one dominated by white Toyota sedans or by three-wheelers.

Two specifics worth knowing: right-hand-drive vehicles in a country that drives on the right usually means significant used imports from Japan, which is a strong signal for parts of Africa, the Caucasus and Central Asia. And a distinctive national taxi livery — the colour scheme and roof sign — is often decisive on its own.

Blurring as a clue

Faces and plates are blurred in street-level imagery, but the blurring is applied by an automated system with its own quirks, and the size and shape of the blurred region still tells you the plate's proportions. A wide blur is a wide plate.

Where it sits

Vehicles are step five, after driving side, script, road markings and roadside furniture. They confirm more often than they decide. The exception is the taxi livery, which can settle a round instantly.

Questions

Can I use number plates if I cannot read them?: Yes — most of the information is in proportions and colour, which survive at low resolution. The long narrow European plate, the squarer North American one and the EU blue band are all identifiable without reading a character.
What does a right-hand-drive car in a right-hand-traffic country mean?: Usually significant used-vehicle imports from Japan, which is a strong signal for parts of Africa, the Caucasus and Central Asia.