After the Huanggang port began 24/7 service, the number of passengers per day quickly increased from 50 thousand to 110 thousand per day, up to a maximum of 172,000. Every day, buses cross the border between 1000-1100 times, twice the normal number and far more than the designed capacity of the number of passengers and vehicles. To solve this problem, the authorities in Guangdong and Hong Kong agreed to provide a combined service of long and short-term buses. There are five groups of six routes of short-term buses between Huangguang Port and Hong Kong, which run between Wan Chai, Tsim Sha Tsui, Kwun Tong, Tsuen Wan, Mong Kok, and Kam Tin in Hong Kong and Huangguang Port, with the Mong Kok, and Kam Tin together in one group. It is run by 5 groups of companies made of 93 passenger transportation companies, and has been operating for 2 years. All the routes operate 24 hours a day except that the Kam Tin route, which works about 18 hours. The bus frequency of every route is at least 60 times. When busy, every 15 minutes and 30 minutes at less busy times and at midnight. Furthermore, buses of every route have the same color and the same ticket price to simplify management.