The rapid development of technology and the need to achieve new energy and environmental goals for climate-neutral transport has transformed the whole transportation sector. Transport research is critical for achieving innovative solutions that will meet future challenges through synergies within the industry and public sectors. Sustainable alternative transportation is becoming a popular research topic that the European Union (EU) has great interest in with its latest Horizon Europe work programme. Areas such as intelligent transport systems include connected and cooperated vehicles and the corresponding safety of the use of these vehicles in an urban environment.

Therefore, there is a strategic need for transportation practitioners as well as researchers to discuss state-of-the-art implementation, the latest methodological developments, and potential impact analysis. These intelligent transport systems need to use new big data analysis and other artificial intelligence methods as well as simulation tools under a user-centred design approach. Future research in this field should include interconnected mobility services to further evaluate the safety of these transport systems. We need to further understand this research field and provide the required transport planning and policies towards a smart city approach.

The aim of this Special Issue is to bring together original research and review articles discussing sustainable mobility in alternative transport systems. We hope that this Special Issue facilitates the exchange of knowledge on a local and international level. Submissions should draw conclusions and shape recommendations on the future of transportation. Therefore, we hope that this Special Issue will be used as a future guide for different stakeholders involved in transport systems.

Potential topics include but are not limited to the following:

• Sustainable urban mobility, implementation, and new synergies
• Innovative and interconnected mobility services
• Intelligent transport systems
• Energy efficient transport and infrastructure
• Simulation environments and new modelling tools
• User-centred design of transport systems
• Road traffic measurements and monitoring systems
• Data analyzing, data mining, artificial intelligence, and big data in transportation
• Transport and traffic safety challenges
• Transport planning and policy