B-roads are minor roads in the United Kingdom that are not classified as major routes. They typically connect smaller towns and rural areas, providing access to local communities. B-roads are often narrower and less maintained than A-roads, which are the primary routes for longer-distance travel. These roads play a crucial role in the transportation network, allowing for the movement of goods and people in less populated regions. B-roads can vary in quality and may include scenic routes, making them popular for leisurely drives and exploring the countryside, especially in areas like the Cotswolds or Lake District.