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The Don Road, extensively upgraded and widened in the 2000s–2010s into an expressway, is an artery connecting Moscow with Southern Russia. In the summer months, the road suffers from heavy traffic congestion caused by summer vacationers travelling to the Black Sea resorts like Sochi and by lorries transporting fruit from the southern provinces to the heavily populated areas of Central and Northern Russia.
M-4 is one of the first Russian national expressways. The road is partially tolled.
During the Wagner Group rebellion, the M4 was used by Wagner Group forces in their attempt to march to Moscow.[1][2] Control over the highway was contested between Wagner Group and the Russian army, with unconfirmed reports of Russian army helicopters firing on Wagner military convoys.[3]
