In Vinh city, pick up by sleeper bus, then go to Bac Vinh to arrange passengers before leaving, so for passengers from Quan Hanh overpass going to Hanoi, there is no need to wait, so the trip is very smooth. From BigC Thanh Hoa to Hanoi, it only takes 2 hours. I went from Vinh city, so waiting for passengers at Bac Vinh station was quite impatient. Good service, reputable bed, funny and calm driver.