Abstract: The design of an underground metro alignment in an urban area is complex and challenging. The metro alignment constantly invades districts with high-density buildings and specially planned districts, which results in large ...

Abstract: Both bus dwell time and bus headway adherence are critical to the serviceability of the bus transit system. It is acknowledged that passengers with physical disabilities may greatly impact bus dwell time and bus headway ...

Abstract: This study develops optimal variable, lane group–based, speed limits for traffic control at freeway lane drop areas (e.g., work zones). The proposed approach adopts a simulation-optimization framework that utilizes a ...

Abstract: Track irregularities generate train vibrations. The precise adjustment of a track after locking a long rail and dispersing its stress during railway operation and maintenance are crucial to ensure high-speed, stable, and ...

Abstract: Railway curve realignment is critical for rectifying railway alignment deviations caused by excessive train load and repeated repairs. The existing realignment methods have limitations, such as low efficiency and precision, ...

Abstract: Railway track geometry is generally understood to be influenced by the deformation of the track infrastructure. This study developed a spatial–temporal identification model for the deformation of the underlying high-speed ...

Abstract: In recent years, many machine learning-based methods have emerged to detect faulty bearings. However, most of these methods may not be practical due to the need to collect a large number of fault samples for training. This ...

Abstract: Designing and optimizing auxiliary roads to support railway construction in complex mountainous areas is challenging. This paper presents a two-stage optimization model for auxiliary road design. The first stage designs ...

Abstract: Although fully implemented autonomous vehicles (AVs) seem to be on the cusp of reality, standard evaluation and testing procedures still are lacking. This study conducted a preliminary evaluation of the technical feasibility, ...