Connected vehicles, big traffic data, car-sharing and other technologies provide opportunities and challenges to the development and application innovation of intelligent transportation systems(ITS). Based on a comprehensive summary of the latest research results in the fields of car-sharing systems, collaborative optimal control of connected vehicles, traffic data analysis and so on, a systematic survey of the research progress of intelligent transportation technologies is proposed, especially, a comprehensive review is made from prespectives of traffic flow and travel demand prediction, vehicle dispatching of mobility-on-demand systems, joint optimization of transportation network and power grid, cooperative control of connected vehicles and vehicle-road collaborative control. The existing problems and challenges of ITS are summarized, showing the promising development directions for future research.