Roads, railways and rail transit lines play major roles in transporting passengers and freight.
In the design process for such transportation infrastructures, the alignment determination …

This paper presents an intelligent optimization tool that assists planners and designers in
finding preferable highway alignments, connecting specified endpoints or zones. It …

The construction cost and crash cost of the highway are contradictory, but there is an optimal
balance between them. This study focused on the best balance point by microadjusting the …

Mountain railway alignment design is an important but complex civil engineering problem.
To overcome the drastically undulating terrain, long tunnels and high bridges are major …

Railway alignment optimization should consider multiple environmental factors. Especially
considering the changing climate, low-carbon design is crucial in alignment development …

The method of handling infeasible solutions in an evolutionary search algorithm [eg, genetic
algorithms (GAs)] is crucial to the effectiveness of the solution search process. This problem …

Optimization of three-dimensional road alignments is a nonlinear non-convex optimization
problem. The development of models that fully optimize a three-dimensional road alignment …

Traditional textbooks on roadway designs focus on fundamental alignment elements and
design criteria. When applying these in practice, engineers must try various design …

This paper presents a GIS-based multi-objective optimization model, particularly designed to
aid highway engineers and planners in proposing competitive highway alignment …

In this paper we propose a stepwise genetic algorithms approach for optimizing highway
alignments for improving computational efficiency and quality of solutions. Our previous …