1,. The daily traffic volume in Mengyin Service Area of Beijing-Shanghai Expressway is about 1, vehicles, of which ordinary cars and trucks account for the vast majority. Mengyin Service Area of Beijing-Shanghai Expressway is located in Mengyin County, which belongs to Laiwu City, Shandong Province, about 7 kilometers away from Laiwu City. It is the largest service area on the Beijing-Shanghai Expressway in China.