[Vocabulary] An element of city traffic infrastructure

[Jigster]

Dear teachers,
I am looking for a term from urban planning for a presentation: It is a road (usually a dual carriage way or even wider), which encircles a city centre. When people want to travel from one end of a city to another, they get on this road instead of travelling through the city centre, which might be congested.
Is there a specific term for this? In Czech, we use a word that is probably closest to "circle" in English.
Thank you.

 

[Rover_KE]

In the UK it's a ring road. In the USA it's a beltway.

 

[SoothingDave]

If not a circle, but still intended to avoid congested city centers, it is called a "bypass."