Because it is a highway parking area. According to the query Aika car shows that there is no gas station is not a high-speed service area, and is called the highway parking area, or rest area, in accordance with China's highway regulations, the highway service area must have a supermarket, catering, toilets, rest, repairs, gas stations and other service units is called the highway service area, and the highway parking area as long as there are toilets and parking area on it.