A-Roads are major roads in the United Kingdom that connect cities, towns, and regions. They are classified as primary or non-primary routes, with primary A-Roads typically marked with a green sign. These roads facilitate long-distance travel and are essential for transporting goods and services across the country. A-Roads are part of the broader road network, which includes B-Roads and motorways. They often have higher traffic volumes than local roads and can vary in size and quality. Some A-Roads may have dual carriageways, while others are single carriageways, affecting speed limits and safety.