What are the recent trends in highway engineering?

Recent trends in highway engineering include the increased adoption of smart technologies, such as intelligent transportation systems (ITS) for real-time traffic management and data analysis. There is also a growing emphasis on sustainability, leading to the use of recycled materials and environmentally friendly practices in road construction. Additionally, the integration of autonomous vehicle infrastructure is becoming more prevalent, alongside a focus on enhancing safety through improved design and materials. Finally, there is a trend towards multimodal transportation solutions, promoting connectivity between highways and other forms of transit.