Let's analyze the question which asks about the name given to good quality long-distance roads in a specific country. The question uses the term 'autobahns'. We need to identify the country where these roads are called autobahns.

Understanding Autobahns

'Autobahn' is a German word. It is the term used in Germany for its controlled-access highway system. These roads are famous for having no mandatory speed limit for some classes of vehicles in certain sections, although speed limits are implemented in many areas, and there are advisory speed limits.

Analyzing the Options for Autobahns

Let's look at the given options:

• Russia: Long-distance roads in Russia are part of the federal highway system, often referred to by names like 'federal highways' or 'M-roads', not autobahns.
• Germany: As discussed, 'Autobahn' is the specific term used in Germany for their national highway system.
• Sweden: Sweden has a system of motorways, but they are referred to by names like 'motorväg' in Swedish, not autobahns.
• Belgium: Belgium also has a motorway network, known as 'autosnelweg' in Dutch or 'autoroute' in French, not autobahns.

Based on the origin and usage of the term 'autobahn', it is specifically associated with Germany.

Confirming the Location of Autobahns

The term 'Autobahn' is synonymous with Germany's extensive network of highways. While other countries have similar high-quality highway systems, they use different names.

Therefore, good quality long-distance roads known by 'autobahns' are found in Germany.

Revision Table: Autobahn Location

Additional Information on Autobahns and Highways

The German autobahn system is one of the oldest and densest controlled-access highway networks in the world. It is officially known as the Bundesautobahn (BAB), meaning 'federal motorway'. The total length of the network is over 13,000 kilometers.

While the most famous characteristic is the absence of a general speed limit on many sections, many parts do have permanent or variable speed limits due to traffic density, environmental concerns, or road conditions. Construction and maintenance standards are generally very high.

Different countries have their own names and characteristics for their highway systems:

• United Kingdom: Motorways (e.g., M1, M25)
• United States: Interstates or Freeways
• France: Autoroutes
• Italy: Autostrade
• Spain: Autovías or Autopistas

Understanding the specific terminology for infrastructure in different countries is important geographical knowledge.