[Smart Innovation, Systems and Technologies] Advances in Smart Vehicular Technology, Transportation, Communication and Applications Volume 129 (Proceeding of the Second International Conference on Smart Vehicular Technology, Transportation, Communication and Applications, October 25-28, 2018 Mount Emei, China, Part 1) || Research on Regional Transportation Network Development Strategies Based on Regional Synergy: A Case Study of Guangdong-Hong Kong-Macao Greater Bay Area