A2
In short
A2 is a major road in the United Kingdom that connects London to Dover.
In plain words
It is a primary route used by many drivers travelling towards the coast. It helps move goods and people from the capital to the ferry ports.
A simple example
A lorry driver carrying food from London to France will likely use the A2 to reach the Dover docks.
Why it matters
It is a vital link for international trade and travel between Britain and mainland Europe. Without this road, moving supplies to the ports would be much harder.
Easy to mix up
People often confuse it with the M2 motorway, which runs roughly parallel to it.