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 having higher traffic volumes and better signage. A-roads are essential for facilitating long-distance travel and transporting goods. These roads are designated with an "A" followed by a number, such as A1 or A40. A-roads can vary in size and quality, ranging from dual carriageways to single-lane roads. They play a crucial role in the UK's road network, complementing the motorway system and providing access to local areas.